CN111021482A - Overflow suppressing member and drain pipe structure - Google Patents
Overflow suppressing member and drain pipe structure Download PDFInfo
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- CN111021482A CN111021482A CN201910952568.6A CN201910952568A CN111021482A CN 111021482 A CN111021482 A CN 111021482A CN 201910952568 A CN201910952568 A CN 201910952568A CN 111021482 A CN111021482 A CN 111021482A
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- shielding
- peripheral wall
- overflow
- suppressing member
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03C—DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
- E03C1/00—Domestic plumbing installations for fresh water or waste water; Sinks
- E03C1/12—Plumbing installations for waste water; Basins or fountains connected thereto; Sinks
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03C—DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
- E03C1/00—Domestic plumbing installations for fresh water or waste water; Sinks
- E03C1/12—Plumbing installations for waste water; Basins or fountains connected thereto; Sinks
- E03C1/122—Pipe-line systems for waste water in building
- E03C1/1222—Arrangements of devices in domestic waste water pipe-line systems
- E03C1/1225—Arrangements of devices in domestic waste water pipe-line systems of air admittance valves
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03C—DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
- E03C1/00—Domestic plumbing installations for fresh water or waste water; Sinks
- E03C1/12—Plumbing installations for waste water; Basins or fountains connected thereto; Sinks
- E03C1/28—Odour seals
- E03C1/284—Odour seals having U-shaped trap
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- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Structural Engineering (AREA)
- Sink And Installation For Waste Water (AREA)
Abstract
Provided are a water overflow suppressing member capable of suppressing water overflow from a drain pipe, and a drain pipe structure capable of suppressing water overflow from the drain pipe. The overflow suppressing member (1A) is provided with a cylindrical peripheral wall (10) that can be connected to a drain pipe, and a shielding section (20) that shields the inside of the peripheral wall along the circumferential direction of the peripheral wall (10).
Description
Technical Field
The invention relates to a water overflow suppressing member and a drain pipe structure.
Background
As a conventional drain pipe structure, there is a siphon drain system in which a vent valve is screwed to a vent hole of a drain trap (see, for example, patent document 1). The breather valve is provided with a check valve. Therefore, according to the siphon drain system described in patent document 1, when negative pressure is generated in the drain pipe, the check valve is opened to allow air to flow into the drain pipe. This can prevent the negative pressure from being excessively generated in the drain pipe. On the other hand, when a positive pressure is generated inside the drain pipe, the check valve is closed, thereby preventing air, drain water, and the like from flowing out of the drain pipe to the outside.
Documents of the prior art
Patent document
Patent document 1: japanese patent laid-open publication No. 2015-98702
Disclosure of Invention
Problems to be solved by the invention
However, even in such a conventional drain pipe structure, the following situation may occur: in the case where a large amount of drain water flows in the drain pipe, the drain water may overflow through the vent valve.
The invention aims to provide a water overflow inhibiting member capable of inhibiting water overflow from a water drain pipe and a water drain pipe structure capable of inhibiting water overflow from the water drain pipe.
Means for solving the problems
The overflow suppressing member according to the present invention includes: a cylindrical peripheral wall connectable to a drain pipe; and a shielding portion that shields the inside of the peripheral wall along the circumferential direction of the peripheral wall. According to the overflow suppressing member of the present invention, overflow from the drain pipe can be suppressed.
Preferably, in the overflow suppressing member according to the present invention, the shielding portion is an annular shielding portion that annularly shields an inside of the peripheral wall, and the overflow suppressing member includes: another shielding part which shields an opening part formed on the inner peripheral side of the shielding part at an upper part side in the peripheral wall with a space from the shielding part; and a fixing piece for fixing the other shielding part to the peripheral wall in a manner of forming other opening part around the other shielding part. In this case, the overflow from the drain pipe can be further suppressed.
Preferably, in the water flood inhibitor according to the present invention, when the water flood inhibitor is viewed from a direction in which a central axis of the water flood inhibitor extends, an inner structure of the peripheral wall is symmetrical about the central axis. In this case, the overflow suppressing member can be connected by a simple operation.
Preferably, in the overflow suppressing member according to the present invention, the shielding portion has a curved portion that is directed toward the lower portion side as it goes toward the central axis of the overflow suppressing member. In this case, the overflow from the drain pipe can be further suppressed.
In the overflow suppressing member according to the present invention, it is preferable that the other shielding portion has a curved shape portion which is convex toward an upper side as it goes toward a central axis of the overflow suppressing member. In this case, the overflow from the drain pipe can be further suppressed.
Preferably, in the overflow suppressing member according to the present invention, the shielding portion and the other shielding portion are alternately and repeatedly arranged from a lower side to an upper side, and a total of three or more shielding portions are provided. In this case, the overflow from the drain pipe can be further suppressed.
The drain pipe structure according to the present invention includes: a drain pipe; a vent valve; a cylindrical peripheral wall disposed between the drain pipe and the breather valve; a shielding portion that shields an inside of the peripheral wall along a circumferential direction of the peripheral wall; another shielding part which shields an opening part formed in the shielding part at an upper part side in the peripheral wall with a space from the shielding part; and a fixing piece for fixing the other shielding part to the peripheral wall in a manner of forming other opening part around the other shielding part. According to the drain pipe structure of the present invention, overflow from the drain pipe is suppressed.
ADVANTAGEOUS EFFECTS OF INVENTION
According to the present invention, it is possible to provide a water overflow suppressing member capable of suppressing water overflow from a drain pipe, and a drain pipe structure capable of suppressing water overflow from a drain pipe.
Drawings
Fig. 1 is a system diagram schematically showing a siphon drainage system to which an overflow inhibitor according to embodiment 1 of the present invention can be applied.
Fig. 2 is a side view showing a water flood suppression device according to embodiment 1 of the present invention.
Fig. 3 is a bottom view showing the overflow suppressing member of fig. 2.
Fig. 4 is a plan view showing the overflow suppressing member of fig. 2.
Fig. 5 is a sectional view a-a of fig. 2.
Fig. 6 is a sectional view of a peripheral wall constituting the water overflow suppressing member of fig. 2, taken along the line a-a of fig. 2.
Fig. 7 is a bottom view showing the peripheral wall of fig. 6.
Fig. 8 is a plan view showing the peripheral wall of fig. 6.
Fig. 9 is a perspective side view showing a water flood suppression device according to embodiment 2 of the present invention.
Fig. 10 is a perspective cross-sectional view of the overflow suppressing member of fig. 9, corresponding to a cross-sectional view a-a of fig. 2.
Description of the reference numerals
1A: water flood inhibitor (embodiment 1), 1B: water flood inhibitor (embodiment 2), 10: peripheral wall, 11: lower end portion, 12: upper end portion, 20: shielding portion, 20 a: annular portion, 20 b: curved shape portion, 20 c: cylindrical portion, 30: intermediate shielding portion (other shielding portion), 30 a: barrel portion, 30 b: curved shape portion, 31: fixing sheet, 40: shielding portion, 40 a: annular portion, 40 b: curved shape portion, 40 c: cylindrical portion, a: drain pipe structure, a 2: opening of shielding part, a 3: opening around the intermediate shielding portion (other opening), a 4: opening of shielding part, 100: siphon drainage system, 110: water-using equipment, 120: connecting pipe, 130: elbow, 131: 1 st descending section, 132: 1 st folded part, 132 a: reservoir, 133: rising portion, 134: 2 nd folded-back portion, 135: 2 nd lowering portion, 140: vent valve, 150: straight tube, 160: traversing tube, 170: standpipe, 180: confluence joint, 190: riser, 200: and (5) siphoning a water drainage pipe.
Detailed Description
Hereinafter, a water overflow suppressing member and a drain pipe structure according to an embodiment of the present invention will be described with reference to the drawings. In the following description, "upstream" and "downstream" define the flow of fluid such as drainage water or air, and "upper" and "lower" define the height. Further, "circumferential direction" means a direction of the water flood stopper around the central axis O1.
In fig. 1, reference numeral 100 denotes a siphon drain system to which the vent valve connector 1A according to embodiment 1 of the present invention can be applied. The siphon drainage system 100 illustrated in fig. 1 is composed of a water using facility 110, a connection pipe 120, an elbow pipe 130, a vent valve 140, a straight pipe 150, a cross pipe 160, a vertical pipe 170, and a vertical pipe 190 connected via a junction joint 180. In the siphon drainage system 100 of fig. 1, the drainage pipe is composed of a connection pipe 120, an elbow pipe 130, a straight pipe 150, a cross pipe 160, and a vertical pipe 170. The water-using device 110 in the example shown in fig. 1 is a kitchen sink. In addition, a slag crusher 111 is provided at the drain port of the water using equipment 110. The type of the water-using device 110 is not particularly limited as long as it is a device for draining water. The water using device 110 may be a tub, a shower, a toilet, and the like provided in a bathroom such as a dishwasher, a wash stand, a washing machine, and an integrated bathroom.
Specifically, the water consuming equipment 110 is disposed on the floor panel 210 in the house. In this example, the water using device 110 is connected to an elbow pipe 130 via a connection pipe 120. In this example, the elbow 130 is an S-shaped drain elbow. The elbow 130 has: a 1 st descending portion 131 where the flow path descends from the upstream side to the downstream side, a 1 st folded portion 132 where the flow path is folded back upward from the upstream side to the downstream side, a rising portion 133 where the flow path ascends from the upstream side to the downstream side, a2 nd folded portion 134 where the flow path is folded back downward from the upstream side to the downstream side, and a2 nd descending portion 135 where the flow path descends from the upstream side to the downstream side. In this example, the 1 st descending portion 131, the 1 st folded portion 132, the ascending portion 133, the 2 nd folded portion 134, and the 2 nd descending portion 135 are integrally formed. In this example, the 2 nd descending portion 135 is formed integrally with the straight pipe 150.
The flow path of the straight pipe 150 descends from the upstream side to the downstream side, and the drainage is guided to the vicinity of the floor slab 220 under the floor panel 210. The traverse tube 160 is connected to the downstream side of the straight tube 150 and extends in the horizontal direction. The traverse pipe 160 is formed of a pipe thinner than a pipe used in conventional slope drainage, and is provided substantially horizontally (substantially without a slope). The standpipe 170 is connected to the downstream side of the cross pipe 160, and its flow path descends from the upstream side to the downstream side. In this example, the vertical pipe 170 passes through the pipe hole 230 of the floor slab 220. Further, in this example, standpipe 170 is connected to the downstream side of standpipe 190 via a junction joint.
The vertical pipe 190 is a pipe body having a larger diameter than the traverse pipe 160 and the vertical pipe 170, and is vertically installed through the building. The riser pipe 190 is connected to a drain flow path from the water-using equipment 110, but is also connected to a drain flow path from other water-using equipment not shown, and is connected to a purge tank not shown on the downstream side.
The siphon drainage system 100 of fig. 1 has a drainage pipe structure a and a siphon drainage pipe 200 of the present embodiment described later. The siphon drain pipe 200 is a pipe provided at least on the downstream side of the storage portion 132a of the 1 st turn-back portion 132 of the elbow 130. In the example of fig. 1, the siphon drain 200 is composed of a connection pipe 120, an elbow pipe 130, a straight pipe 150, a cross pipe 160, and a stand pipe 170. In such a siphon drainage system 100, when the water is filled, the drainage flows out from the cross pipe 160 to the vertical pipe 170, and the drainage flows downward, thereby generating a siphon force. The cross pipe 160 is drained by pulling with the generated siphon force.
As shown in fig. 1, in this example, the bent pipe 130 includes a bent pipe having a reservoir 132a capable of accumulating the drainage water in the 1 st folded portion 132. In an S-shaped drain trap such as the trap 130, a sufficient water seal is usually accumulated in the reservoir portion 132a of the 1 st folded portion 132. That is, in the reservoir portion 132a of the 1 st folded portion 132, a space (flow path) between the upstream side and the downstream side is water-sealed and shut off. This can prevent, for example, odor, insect pests, and the like from entering from the downstream side of the elbow pipe 130.
In the siphon drainage system 100 of fig. 1, the vent valve 140 is a check valve and is provided downstream of the reservoir 132a of the trap 130. In this example, the vent valve 140 is connected to the upper portion of the 2 nd folded portion 134 via a vent valve connector 1A of the present embodiment described later. Thus, in the siphon drainage system 100 of fig. 1, when siphon suction (negative pressure) is generated inside the siphon drainage pipe 200, air is taken into the trap 130 through the vent valve 140 by opening the vent valve 140. Accordingly, even if a large negative pressure is generated inside the siphon drain pipe 200, air can be taken in from the breather valve 140, and therefore, the water seal at the reservoir portion 132a of the 1 st folded portion 132 is not pulled to the downstream side (here, the rising portion 133 side). Therefore, by providing the vent valve 140, it is possible to prevent the water seal from being broken (the water seal state can be maintained). On the other hand, in the siphon drain pipe 200, further, when the breather valve 140 is not at a negative pressure, the breather valve 140 does not allow ventilation, and therefore, air, drain, or the like can be prevented from flowing out of the siphon drain pipe 200 to the outside.
However, even if the breather valve 140 is provided in the siphon drain pipe 200 as in this example, when the breather valve 140 is directly connected to the upper portion of the trap 130, a large amount of drain water may flow and enter the breather valve 140. Particularly, in the case where the drain water has a water potential, the drain water may overflow from the vent valve 140.
Therefore, in siphon drainage system 100 of fig. 1, siphon drainage pipe 200 and vent valve 140 are connected via overflow inhibitor 1A of the present embodiment.
Fig. 2 is a side view of the overflow suppressing member 1A of the present embodiment. Fig. 3 is a bottom view of the water flood suppression element 1A. Further, fig. 4 is a plan view of the water flood suppression element 1A. As shown in fig. 2 to 4, the overflow suppressing member 1A of the present embodiment is a cylindrical connecting member. In the drawing, reference numeral O1 is a central axis of the overflow suppressing member 1A.
Further, fig. 5 is a sectional view of the water flood suppression element 1A. As shown in fig. 5, the overflow suppressing member 1A includes a cylindrical peripheral wall 10 connectable to a drain pipe. The overflow suppressing member 1A of the present embodiment includes a cylindrical peripheral wall 10, and the peripheral wall 10 includes a lower end portion 11 connectable to the elbow 130 and an upper end portion 12 connectable to the vent valve 140. The peripheral wall 10 is preferably cylindrical as in the present embodiment. However, the cross-sectional shape of the peripheral wall 10 is not limited to a circular shape (annular shape) as long as it is a hollow wall, and may be various cross-sectional shapes such as a polygonal shape.
As shown in fig. 5, in the overflow suppressing member 1A of the present embodiment, the lower end portion 11 has an "internal thread" formed as a part of the inner peripheral surface of the peripheral wall 10. In the present embodiment, the upper end portion 12 has a "male screw" formed as a part of the outer peripheral surface of the peripheral wall 10. Specifically, the peripheral wall 10 includes a large diameter portion 10a and a small diameter portion 10b connected to the large diameter portion 10 a. In the present embodiment, the lower end portion 11 is formed as a part of the large diameter portion 10a of the peripheral wall 10. In the present embodiment, the upper end portion 12 is formed as a part of the small diameter portion 10b of the peripheral wall 10. In the present embodiment, the center axis O10 of the peripheral wall 10 is disposed on the same axis as the center axis O1 of the vent valve connector 1A.
Further, the overflow suppressing member 1A includes 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 lower end portion 11 side of the inside of the peripheral wall 10. In the overflow suppressing device 1A of the present embodiment, the shielding portion 20 annularly shields the inside of the peripheral wall 10.
In the overflow inhibitor 1A of the present embodiment, the annular shielding portion (hereinafter also simply referred to as "annular shielding portion") 20 functions as a shielding portion that prevents drainage or the like from the bent pipe 130 from being introduced into the interior of the peripheral wall 10 when the overflow inhibitor 1A is connected to the bent pipe 130. When the overflow suppressing member 1A is connected to the bent pipe 130, the opening a2 formed in the shielding portion 20 functions as a passage for discharging air from the bent pipe 130.
In the overflow suppressing device 1A of the present embodiment, the shielding portion 20 is configured as a member independent from the peripheral wall 10. In the present embodiment, the shielding portion 20 is fixed to the inner circumferential surface of the large diameter portion 10a of the circumferential wall 10. In the present embodiment, the central axis O20 of the shielding portion 20 is also arranged on the same axis as the central axis O1 of the overflow suppressing member 1A. In the present embodiment, as shown in fig. 3, the outer edge 20e1 of the shielding portion 20 has a circular shape when viewed from the extending direction of the central axis O1 of the peripheral wall 10, i.e., when viewed in the axial direction. In the present embodiment, the outer edge 20e1 of the shielding portion 20 is shaped into a circle having a radius R2a with respect to the central axis O1 of the overflow suppressing member 1A. The opening a2 is a circle having a radius R2b around the central axis O1 of the overflow suppressing member 1A.
In the overflow suppressing member 1A of the present embodiment, as shown in fig. 5, the shielding portion 20 has a curved portion that is directed downward as it goes toward the central axis O1 of the overflow suppressing member 1A.
In the overflow suppressing member 1A of the present embodiment, as shown in fig. 5, a plane including the central axis O1 of the overflow suppressing member 1A is taken as a cross section, and when viewed in a perpendicular direction to the cross section, that is, when viewed in a direction perpendicular to the axis, the shielding portion 20 includes an annular portion 20a, a cylindrical curved portion 20b connected to an opening edge of the annular portion 20a, and a cylindrical portion 20c connected to an opening edge of the curved portion 20 b.
In the overflow suppressing member 1A of the present embodiment, as shown in fig. 5, the lower shielding surface 20f1 of the shielding portion 20 is formed by the lower shielding surface 20f1A of the annular portion 20a, the lower shielding surface 20f1b of the curved portion 20b, and the lower (outer) shielding surface 20f1c of the cylindrical portion 20c when viewed in a cross-section in a direction perpendicular to the axis. In the present embodiment, as shown in fig. 5, the cross-sectional shape of the lower shielding surface 20f1A of the annular portion 20a is a straight line extending in a direction (radial direction) orthogonal to the flow direction of air (drain water) (in the present embodiment, the extending direction of the central axis O1 of the overflow inhibitor 1A) when viewed in a cross-section in a direction perpendicular to the axis. In the present embodiment, as shown in fig. 5, the cross-sectional shape of the lower shielding surface 20f1b of the curved portion 20b is a curve having a radius R20a with the center point P20 as the center when viewed in a cross-section in a direction perpendicular to the axis. In the present embodiment, as shown in fig. 5, the cross-sectional shape of the lower shielding surface 20f1c of the cylindrical portion 20c is a straight line extending along the air flow direction when viewed in a cross section perpendicular to the axis. In the present embodiment, as shown in fig. 5, when viewed in a cross-sectional view perpendicular to the axis, the center point P20 is a position where a circle is drawn such that both a (radial) straight line of the lower shielding surface 20f1a of the annular portion 20a and a (axial) straight line of the lower shielding surface 20f1c of the cylindrical portion 20c are tangent lines, and the center point P20 is located at the center point of the circle.
In the overflow suppressing member 1A of the present embodiment, as shown in fig. 5, the upper shielding surface 20f2 of the shielding portion 20 is formed by the upper shielding surface 20f2a of the annular portion 20a, the upper shielding surface 20f2b of the curved portion 20b, and the upper (inner peripheral) shielding surface 20f2c of the cylindrical portion 20c when viewed in a cross-section in a direction perpendicular to the axis. In the present embodiment, as shown in fig. 5, the cross-sectional shape of the upper shielding surface 20f2a of the annular portion 20a is a straight line extending in a direction orthogonal to the air flow direction when viewed in a cross-section in a direction perpendicular to the axis. In the present embodiment, as shown in fig. 5, the sectional shape of the upper shielding surface 20f2b of the curved portion 20b is a curve having a radius R20b with the center point P20 as the center when viewed in a cross section in a direction perpendicular to the axis. In the present embodiment, as shown in fig. 5, the cross-sectional shape of the upper shielding surface 20f2c of the cylindrical portion 20c is a straight line extending along the air flow direction when viewed in a cross section perpendicular to the axis. The shielding portion 20 may be formed of only the curved portion 20 b.
In particular, in the overflow suppressing member 1A of the present embodiment, the shielding portion 20 has the annular convex portion 20 d. In the present embodiment, the annular convex portion 20d rises annularly from the annular portion 20a around the central axis O1 of the overflow stopper 1A. In the present embodiment, the shielding portion 20 can be fixed to the peripheral wall 10 by, for example, being press-fitted into the annular recess 10n of the peripheral wall 10. Alternatively, the shielding portion 20 may be sandwiched between the peripheral wall 10 and the bent tube 130 without being fixed to the lower side end of the peripheral wall 10.
As shown in fig. 5, in the overflow suppressing member 1A of the present embodiment, the shielding portion 20 is an annular shielding portion that annularly shields the inside of the peripheral wall 10. In the present embodiment, the intermediate shielding portion (other shielding portion) 30 is provided to shield the opening a2 formed on the inner peripheral side of the shielding portion 20 with a space in the upper portion side of the inside of the peripheral wall 10. The intermediate shielding portion 30 is located at an upper portion of the shielding portion 20 in the peripheral wall 10. Fig. 7 is a bottom view of the peripheral wall 10. Fig. 8 is a plan view of the peripheral wall 10. As shown in fig. 7 and 8, the overflow suppressing member 1A of the present embodiment includes a fixing piece 31 that fixes the intermediate shielding portion 30 to the peripheral wall 10 so that another opening portion a3 is formed around the intermediate shielding portion 30 by the fixing piece 31.
In the overflow suppressing device 1A of the present embodiment, the intermediate shielding portion 30 is integrally formed with the peripheral wall 10 via a plurality of fixing pieces 31. As shown in fig. 7 and 8, in the present embodiment, the peripheral wall 10 includes, as the fixing pieces 31, four fixing pieces 31 arranged at intervals around the central axis O1 of the overflow stopper 1A. Thereby, four openings a3 are formed between the four fixing pieces 31. In the present 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. In the present embodiment, the central axis O30 of the intermediate shielding portion 30 is also disposed on the same axis as the central axis O1 of the overflow suppressing member 1A. In the present embodiment, as shown in fig. 7 and 8, the outer edge 30e1 of the intermediate shielding portion 30 has a circular shape when viewed in the axial direction. As shown in fig. 8, in the present embodiment, the outer edge 30e1 of the intermediate shielding portion 30 is shaped into a circle having a radius R3a centered on the central axis O1 of the water flood stopper 1A. Further, as shown in fig. 7, the inner edge 30e2 of the intermediate shield portion 30 is shaped into a circle having a radius R3b centered on the central axis O1 of the overflow suppressing member 1A.
In the overflow suppressing member 1A of the present embodiment, as shown in fig. 5, the intermediate shielding portion 30 has a curved shape portion that is convex toward the upper side as it goes toward the central axis O1 of the overflow suppressing member 1A.
Fig. 6 is a sectional view showing the peripheral wall 10 as a section corresponding to a-a in fig. 2. In the water flood inhibitor 1A of the present embodiment, as shown in fig. 6, a plane including the central axis O1 of the water flood inhibitor 1A is taken as a cross section, and the intermediate shielding portion 30 is formed in a dome shape when viewed in a perpendicular direction of the cross section, that is, when viewed in a direction perpendicular to the axis. In the present embodiment, the intermediate shielding portion 30 includes a cylindrical portion 30a extending from a lower side to an upper side, and a curved portion 30b connected to an upper side end surface of the cylindrical portion 30 a.
In the overflow suppressing member 1A of the present embodiment, as shown in fig. 6, the lower side shielding surface 30f1 of the intermediate shielding portion 30 is formed by the lower side (inner peripheral side) shielding surface 30f1A of the cylindrical body portion 30a and the lower side shielding surface 30f1b of the curved portion 30b when viewed in a cross section perpendicular to the axis line. In the present embodiment, the tubular body portion 30a extends from the upper side end surface 31f of the fixing piece 31 by the length L30 in the extending direction of the central axis O1 of the overflow stopper 1A. In the present embodiment, as shown in fig. 6, the sectional shape of the lower-side shielding surface 30f1a of the cylindrical body portion 30a is a straight line extending in the flow direction of the air when viewed in cross section in the direction perpendicular to the axis. In the present embodiment, as shown in fig. 6, when viewed in a cross-sectional view in a direction perpendicular to the axis, the cross-sectional shape of the lower shielding surface 30f1b of the curved portion 30b is a semicircular curve having a radius R30a centered on the center point P30. In the present embodiment, as shown in fig. 6, the center point P30 is located at a position separated from the upper side end surface 31f of the fixing piece 31 by a length L30 along the extending direction of the central axis O1 of the water flood stopper 1A and on the central axis O1 of the water flood stopper 1A when viewed in cross section in the direction perpendicular to the axis. That is, in the present embodiment, as shown in fig. 6, the center point P30 is located at a position on the central axis O1 of the water flood inhibitor 1A corresponding to the position between the cylindrical body 30a and the curved shape portion 30b when viewed in cross section in the direction perpendicular to the axis.
In the overflow suppressing member 1A of the present embodiment, as shown in fig. 6, the upper shielding surface 30f2 of the intermediate shielding portion 30 is formed by the upper side (outer peripheral side) shielding surface 30f2a of the cylindrical portion 30a and the upper side shielding surface 30f2b of the curved portion 30b when viewed in a cross section perpendicular to the axial line. In the present embodiment, as shown in fig. 6, the sectional shape of the upper shielding surface 30f2a of the cylindrical body portion 30a is a straight line extending along the flow direction of the air when viewed in a cross section in a direction perpendicular to the axis. In the present embodiment, as shown in fig. 6, when viewed in a cross-sectional view in a direction perpendicular to the axis, the cross-sectional shape of the upper shielding surface 30f2b of the curved portion 30b is a semicircular curve having a radius R30b centered on the center point P30. The intermediate shielding portion 30 may be formed only by the curved portion 30b as described later.
Further, in the overflow suppressing member 1A of the present embodiment, a total of three or more shielding portions 20 and the intermediate shielding portion 30 can be alternately and repeatedly arranged from the lower side toward the upper side.
In the overflow suppressing member 1A of the present embodiment, as shown in fig. 5, the shielding portions 20 and the intermediate shielding portions 30 are alternately and repeatedly arranged from the lower side to the upper side, and the total number is three. In the present embodiment, the present embodiment includes a further shielding portion 40 that annularly shields the inside of the peripheral wall 10. The shielding portion 40 is located on the upper end portion 12 side inside the peripheral wall 10. The shielding portion 40 annularly shields the inside of the peripheral wall 10 on the upper end portion 12 side.
In the overflow suppressing device 1A of the present embodiment, the shielding portion 40 is configured as a member independent from the peripheral wall 10. In the present embodiment, the shielding portion 40 is fixed to the inner peripheral surface of the small diameter portion 10b of the peripheral wall 10. In the present embodiment, the center axis O40 of the shielding portion 40 is also arranged on the same axis as the center axis O1 of the vent valve connector 1A. In the present embodiment, as shown in fig. 4, the outer edge 40e1 of the shielding portion 40 has a circular shape when viewed from the extending direction of the central axis O1 of the peripheral wall 10, i.e., when viewed in the axial direction. In the present embodiment, the outer edge 40e1 of the shielding portion 40 has a shape of a circle having a radius R4a with respect to the central axis O1 of the overflow suppressing member 1A. The opening a4 is a circle having a radius R4b around the central axis O1 of the overflow suppressing member 1A.
As shown in fig. 5, in the overflow suppressing member 1A of the present embodiment, the shielding portion 40 has a curved portion that is directed downward as it goes toward the central axis O1 of the overflow suppressing member 1A.
As shown in fig. 5, the water flood suppression device 1A of the present embodiment has a shielding portion 40 having an annular portion 40a, a cylindrical curved portion 40b connected to an opening edge of the annular portion 40a, and a cylindrical portion 40c connected to an opening edge of the curved portion 40b, when viewed in a cross section perpendicular to the axis.
In the overflow suppressing member 1A of the present embodiment, as shown in fig. 5, the lower shielding surface 40f1 of the shielding portion 40 is formed by the lower shielding surface 40f1A of the annular portion 40a, the lower shielding surface 40f1b of the curved portion 40b, and the lower (outer) shielding surface 40f1c of the cylindrical portion 40c when viewed in a cross-sectional view perpendicular to the axis. In the present embodiment, as shown in fig. 5, the cross-sectional shape of the lower shielding surface 40f1a of the annular portion 40a is a straight line extending in a direction orthogonal to the air flow direction when viewed in a cross-section in a direction perpendicular to the axis. In the present embodiment, as shown in fig. 5, the cross-sectional shape of the lower shielding surface 40f1b of the curved portion 40b is a curve having a radius R40a centered on the center point P40 when viewed in a cross-section in a direction perpendicular to the axis. In the present embodiment, as shown in fig. 5, the cross-sectional shape of the lower shielding surface 40f1c of the cylindrical portion 40c is a straight line extending along the air flow direction when viewed in a cross section perpendicular to the axis. In the present embodiment, as shown in fig. 5, when viewed in a cross-sectional view perpendicular to the axis, the center point P40 is a position where a circle is drawn such that both a (radial) straight line of the lower shielding surface 40f1a of the annular portion 40a and a (axial) straight line of the lower shielding surface 40f1c of the cylindrical portion 40c are tangent lines, and the center point P40 is located at the center point of the circle.
In the overflow suppressing member 1A of the present embodiment, as shown in fig. 5, the upper shielding surface 40f2 of the shielding portion 40 is formed by the upper shielding surface 40f2a of the annular portion 40a, the upper shielding surface 40f2b of the curved portion 40b, and the upper (inner peripheral) shielding surface 40f2c of the cylindrical portion 40c when viewed in a cross-section perpendicular to the axis. In the present embodiment, as shown in fig. 5, the cross-sectional shape of the upper shielding surface 40f2a of the annular portion 40a is a straight line extending in a direction orthogonal to the air flow direction when viewed in a cross-section in a direction perpendicular to the axis. In the present embodiment, as shown in fig. 5, the sectional shape of the upper shielding surface 40f2b of the curved portion 40b when viewed in a cross section in a direction perpendicular to the axis is a curve having a radius R40b centered on the center point P40. In the present embodiment, as shown in fig. 5, the cross-sectional shape of the upper shielding surface 40f2c of the cylindrical portion 40c is a straight line extending along the air flow direction when viewed in a cross section perpendicular to the axis. The shielding portion 40 may be formed only by the curved portion 40 b.
In the overflow suppressing device 1A of the present embodiment, the shielding portion 40 has the annular convex portion 40 d. In the present embodiment, the annular convex portion 40d rises annularly from the annular portion 40a around the central axis O1 of the overflow stopper 1A. In the present embodiment, the shielding portion 40 can be fixed to the upper side end of the peripheral wall 10. Alternatively, the shielding portion 40 may be sandwiched between the peripheral wall 10 and the vent valve 140 without being fixed to the upper side end of the peripheral wall 10. In the present embodiment, the shielding portion 40 is the same member as the shielding portion 20. In this case, the members can be made common. However, the shielding portion 40 may be a member different from the shielding portion 20.
According to the overflow suppressing member 1A of the present embodiment, the shielding portion 20 shields the inside of the peripheral wall 10 along the circumferential direction of the peripheral wall 10, and therefore even when a large amount of drainage flows through the drainage pipe and the drainage enters the overflow suppressing member 1A, the drainage can be suppressed from flowing into the upper portion side. Therefore, according to the overflow suppressing device 1A of the present embodiment, the overflow from the elbow 130 can be suppressed. Further, according to the overflow suppressing member 1A of the present embodiment, the opening a2 formed on the inner peripheral side of the shielding portion 20 allows air or the like in the siphon drain pipe 200 to escape, thereby suppressing a possible occurrence of a break in the siphon drain pipe 200. In particular, when the shielding portion 20 is an annular shielding portion that annularly shields the inside of the peripheral wall 10 as in the present embodiment, the shielding portion 20 functions as a chimney, and thus, air can be easily taken in and out. In addition, when the shielding portion 20 is an annular shielding portion, for example, when the shielding portion 20 is configured independently as in the present embodiment, the shielding portion 20 can be easily molded.
Further, according to the overflow inhibitor 1A of the present embodiment, since the intermediate shielding portion 30 shields the opening a2 of the shielding portion 20 at a distance from the shielding portion 20 on the upper side of the inside of the peripheral wall 10, even when a large amount of drain flows through the siphon drain pipe 200 and enters the overflow inhibitor 1A through the opening a2 formed in the shielding portion 20, the drain can be inhibited from flowing into the upper side. In this case, the overflow from the elbow 130 can be further suppressed. Further, according to the overflow suppressing member 1A of the present embodiment, the opening a3 formed around the intermediate shielding portion 30 allows air or the like in the siphon drain pipe 200 to escape, thereby suppressing a possible occurrence of a broken seal in the siphon drain pipe 200. As in the present 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 intermediate shielding portion 30. In this case, the following effects can be obtained: the drain water from the bent pipe 130 is hard to flow into the upper portion, and the air in the bent pipe 130 easily flows out.
As is apparent from fig. 3 to 5, 7, and 8, when the water flood barrier 1A is viewed from the extending direction of the central axis O1, the water flood barrier 1A of the present embodiment has a structure in which the internal structure of the peripheral wall 10 is symmetrical about the central axis O1. Specifically, the overflow suppressing member 1A has a structure in which the shielding portion 20, the intermediate shielding portions 30 and 40, and the openings a2, A3, and a4 are symmetrical about the central axis O1. In this case, since the elbow 130 and the vent valve 140 are easily aligned in the structure when connected, the overflow inhibitor can be connected by a simple operation. Further, according to the water flood inhibitor of the present invention, the internal structure of the peripheral wall 10 may be asymmetrical about the central axis O1 when the water flood inhibitor 1A is viewed from the extending direction of the central axis O1. However, considering the mounting direction when the water flood inhibitor is mounted, it is preferable that the mounting direction is symmetrical.
In the overflow suppressing device 1A of the present embodiment, the shielding portion 20 has the curved portion 20b that is directed downward as it goes toward the central axis O1 of the overflow suppressing device 1A. In this case, the drain overflowing from the bent pipe 130 can be efficiently returned to the bent pipe 130 along the lower shielding surface 20f1 of the curved portion 20b of the shielding portion 20, and therefore, the overflow from the bent pipe 130 can be further suppressed.
In the overflow suppressing member 1A of the present embodiment, the intermediate shielding portion 30 has a curved portion 30b that is convex toward the upper side as it goes toward the downstream. In this case, even when the drain water overflowing from the bent pipe 130 enters through the opening a2 formed in the shielding portion 20, the drain water overflowing from the bent pipe 130 can be efficiently returned to the bent pipe 13 along the lower side shielding surface 30f1 of the curved portion 30b of the intermediate shielding portion 30, and therefore, the overflow from the bent pipe 130 can be further suppressed. In particular, in the present embodiment, the upper shielding surface 30f2 of the intermediate shielding portion 30 has the upper shielding surface 30f2a of the cylindrical portion 30 a. In this case, the following effects can be obtained: splash water, which may be generated by vibration of the slag crusher 111, etc., is prevented from intruding into the inside of the vent valve 140. In the present embodiment, as shown in fig. 6, the intermediate shielding portion 30 is formed in a dome shape when viewed in cross section in a direction perpendicular to the axis, but may be formed in a conical shape such as an umbrella shape, a pyramid shape, or a cube shape.
In the overflow suppressing member 1A, the shielding portions 20 and the intermediate shielding portions 30 are alternately and repeatedly arranged from the lower side to the upper side, and the total number is three or more. In the present embodiment, the overflow suppressing member 1A includes three shielding portions 20, the intermediate shielding portion 30, and the shielding portion 40, which are alternately arranged from the lower side toward the upper side. In this case, by increasing the number of the shielding portions, the overflow from the elbow 130 can be further suppressed.
In the overflow suppressing device 1A of the present embodiment, the shielding portion 20 and the shielding portion 40 are configured as members different from the peripheral wall 10. In the present embodiment, the peripheral wall 10 can be formed of, for example, resin, metal, or elastomer. In the present embodiment, the shielding portions 20 and 40 may be formed of, for example, resin, metal, or elastomer. In the present embodiment, the shielding portions 20 and 40 are formed of an elastic body such as rubber. In this case, the shielding portions 20 and 40 can function as gaskets (sealing members).
The siphon drainage system 100 of fig. 1 includes an elbow 130, a breather valve 140, a cylindrical peripheral wall 10 disposed between the elbow 130 and the breather valve 140, a shielding portion 20 that shields the inside of the peripheral wall 10 along the circumferential direction of the peripheral wall, another shielding portion 30 that shields an opening a2 formed in the shielding portion 20 at an upper portion side of the inside of the peripheral wall 10 with a space therebetween, and a fixing piece 31 that fixes the other shielding portion 30 to the peripheral wall 10 so as to form another opening A3 around the other shielding portion 30. As shown, the siphon drain system 100 of fig. 1 has a drain configuration a. As shown in the area a, the drain pipe structure a of the present embodiment includes a bent pipe 130, a vent valve 140, and an overflow suppressing member 1A disposed between the bent pipe 130 and the vent valve 140. As shown in fig. 5, the overflow suppressing member 1A includes a peripheral wall 10 disposed between the elbow 130 and the vent valve 140. The overflow suppressing member 1A includes a shielding portion 20 that shields the inside of the peripheral wall 10 along the circumferential direction of the peripheral wall 10, an intermediate shielding portion 30 that shields an opening a2 formed on the inner circumferential side of the shielding portion 20 with a space therebetween on the upper side of the inside of the peripheral wall 10, and a fixing piece 31 that fixes the intermediate shielding portion 30 to the peripheral wall 10 so as to form another opening A3 around the intermediate shielding portion 30. Therefore, according to the drain pipe structure a of the present embodiment, the overflow from the elbow pipe 130 is suppressed. In the drain pipe structure 1A of the present embodiment, the overflow stopper 1A is disposed between the elbow 130 and the vent valve 140, and the above-described structure is an attachment type drain pipe structure, but according to the drain pipe structure of the present invention, if the cylindrical peripheral wall 10, the shielding portion 20, the other shielding portion 30, and the fixing piece 31 can be disposed between the elbow 130 and the vent valve 140, it is not necessary to assemble these members as the overflow stopper 1A.
Fig. 9 is a perspective side view schematically showing a water overflow suppressing device 1B according to embodiment 2 of the present invention. Fig. 10 is a perspective sectional view schematically showing the water flood suppression element 1B in a sectional view corresponding to a-a in fig. 2. Hereinafter, in the overflow water suppressing member 1B of the present embodiment, the same reference numerals are given to the same structures as those of the overflow water suppressing member 1A of embodiment 1, and the description thereof will be omitted.
The overflow suppressing member 1B of the present embodiment is a device in which 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 water flood suppression element 1B can be integrally formed of the same material such as resin.
The above description is merely illustrative of several embodiments of the present invention, and various modifications can be made based on the claims. For example, the shielding portion 20 may intermittently shield the inside of the peripheral wall 10 along the circumferential direction of the peripheral wall 10 as long as the inside of the peripheral wall 10 is shielded along the circumferential direction of the peripheral wall 10. That is, the shielding portion 20 is not limited to the annular shielding portion. The shielding portion 20 is preferably provided at a lower portion side in the inner portion of the peripheral wall 10, and at least at a position on an upstream side of the water flow at which the drainage is likely to be introduced. As a specific example of such a shielding portion 20, a semicircular shielding portion is given as viewed in the axial direction of the peripheral wall 10. In this case, the shielding portion 20 shields the upstream side of the water flow at the time of introduction of the drainage, and on the downstream side thereof, the air flow is allowed by the gap formed between the shielding portion 20 and the inner circumferential surface of the circumferential wall 10. Such a shield portion 20 that is not annular is effective when the internal structure of the peripheral wall 10 is asymmetric.
In the above embodiments, the overflow suppressing members 1A and 1B are configured independently of the vent valve 140 in view of versatility with the conventional vent valve, but may be formed integrally with the vent valve 140. The overflow suppressing member according to the present invention is preferably disposed between the vent valve and the drain pipe, but may be disposed between the vent port and the drain pipe. Further, in each of the above embodiments, the overflow suppressing members 1A and 1B are disposed above the bent pipe 130, but may be disposed at any position of the connection pipe 120, the bent pipe 130, the straight pipe 150, the lateral guide pipe 160, and the vertical pipe 170 as long as the position can discharge the air in the siphon drain pipe 200. Further, various configurations employed in the above-described embodiments can be used in combination with each other. In addition, various configurations adopted in the above-described embodiments can be appropriately replaced with each other.
Claims (7)
1. A water flood suppression device is provided with:
a cylindrical peripheral wall connectable to a drain pipe; and
and a shielding portion that shields the inside of the peripheral wall along the circumferential direction of the peripheral wall.
2. An overflow suppressing member as claimed in claim 1 wherein,
the shielding part is an annular shielding part which annularly shields the inner part of the peripheral wall,
the overflow suppressing member includes:
another shielding part which shields an opening part formed on the inner peripheral side of the shielding part at an upper part side in the peripheral wall with a space from the shielding part; and
and a fixing piece for fixing the other shielding part to the peripheral wall so as to form an other opening part around the other shielding part.
3. An overflow suppressing member as claimed in claim 1 or 2 wherein,
the inner structure of the peripheral wall is symmetrical about the central axis when the water flood barrier is viewed in the direction in which the central axis of the water flood barrier extends.
4. A flood suppression according to any one of claims 1 to 3,
the shielding portion has a curved shape portion that is directed toward the lower portion side as going toward the central axis of the overflow suppressing member.
5. An overflow suppressing member as claimed in claim 2 wherein,
the other shielding portion has a curved portion that is convex toward the upper side toward the central axis of the overflow suppressing member.
6. An overflow suppressing member as claimed in claim 2 wherein,
the shielding parts and the other shielding parts are alternately and repeatedly arranged from the lower side to the upper side, and the total number of the shielding parts and the other shielding parts is more than three.
7. A drain pipe structure is provided with:
a drain pipe;
a vent valve;
a cylindrical peripheral wall disposed between the drain pipe and the breather valve;
a shielding portion that shields an inside of the peripheral wall along a circumferential direction of the peripheral wall;
another shielding part which shields an opening part formed in the shielding part at an upper part side in the peripheral wall with a space from the shielding part; and
and a fixing piece for fixing the other shielding part to the peripheral wall so as to form an other opening part around the other shielding part.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018-191074 | 2018-10-09 | ||
| JP2018191074A JP7145716B2 (en) | 2018-10-09 | 2018-10-09 | Flood control device and drainage pipe structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111021482A true CN111021482A (en) | 2020-04-17 |
Family
ID=70204636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910952568.6A Pending CN111021482A (en) | 2018-10-09 | 2019-10-09 | Overflow suppressing member and drain pipe structure |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP7145716B2 (en) |
| CN (1) | CN111021482A (en) |
| TW (1) | TWI729524B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009002099A (en) * | 2007-06-25 | 2009-01-08 | Sekisui Chem Co Ltd | Pipe joint for by-pass ventilation, and drainage system using the pipe joint for by-pass ventilation |
| CN205839888U (en) * | 2016-05-25 | 2016-12-28 | 山西泫氏实业集团有限公司 | The anti-H pipe that backflows of a kind of used in construction drainage |
| CN206941722U (en) * | 2017-05-03 | 2018-01-30 | 浙江伟星新型建材股份有限公司 | A kind of H type four-way pipe fittings with diversion Design |
| CN206941720U (en) * | 2017-07-15 | 2018-01-30 | 新昌县七星街道启明图形设计工作室 | A kind of anti-drainage pipeline that backflows for building |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3681688B2 (en) * | 2002-01-22 | 2005-08-10 | 株式会社キッツ | Drainage pipe fitting device |
| JP5352782B2 (en) * | 2008-05-14 | 2013-11-27 | 丸一株式会社 | Drain trap |
| JP5295677B2 (en) * | 2008-07-30 | 2013-09-18 | 株式会社キッツ | Ventilation device |
| TWM390332U (en) * | 2010-04-02 | 2010-10-11 | Wen-Xing Wang | Ventilation and overflow-proof structure of discharge pipe |
| JP6371945B2 (en) * | 2013-11-19 | 2018-08-15 | 丸一株式会社 | Drain trap |
| CN203905147U (en) * | 2014-05-12 | 2014-10-29 | 厦门威迪亚科技有限公司 | High flow odor-resistant water supplement spill-proof dual-channel floor drain |
-
2018
- 2018-10-09 JP JP2018191074A patent/JP7145716B2/en active Active
-
2019
- 2019-10-07 TW TW108136221A patent/TWI729524B/en active
- 2019-10-09 CN CN201910952568.6A patent/CN111021482A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009002099A (en) * | 2007-06-25 | 2009-01-08 | Sekisui Chem Co Ltd | Pipe joint for by-pass ventilation, and drainage system using the pipe joint for by-pass ventilation |
| CN205839888U (en) * | 2016-05-25 | 2016-12-28 | 山西泫氏实业集团有限公司 | The anti-H pipe that backflows of a kind of used in construction drainage |
| CN206941722U (en) * | 2017-05-03 | 2018-01-30 | 浙江伟星新型建材股份有限公司 | A kind of H type four-way pipe fittings with diversion Design |
| CN206941720U (en) * | 2017-07-15 | 2018-01-30 | 新昌县七星街道启明图形设计工作室 | A kind of anti-drainage pipeline that backflows for building |
Also Published As
| Publication number | Publication date |
|---|---|
| JP7145716B2 (en) | 2022-10-03 |
| TW202026493A (en) | 2020-07-16 |
| JP2020060016A (en) | 2020-04-16 |
| TWI729524B (en) | 2021-06-01 |
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