JP4163246B2 - Drainage - Google Patents

Description

      The present invention relates to a drainage basin, and in particular, backflow water or bad odor from the sewage main side flows back into the building side piping by being interposed between piping on the building side such as a house or a store and piping on the sewage main side. The present invention also relates to a drainage dredger that prevents dredging, cockroaches, etc. from entering the building side piping.

    In general, drainage pipes for bathrooms in buildings such as houses and stores are connected to the sewage mains to discharge the sewage into the sewers. The clogging etc. in the piping is inspected by opening the drainage lid and seeing it.

    As shown in Patent Document 1 and Patent Document 2, the basic structure of the drainage basin currently on the market and used is a cylindrical basin body having a hollow portion in the vertical direction, and a lower part of the basin body. A cylindrical tubular body provided with a hollow portion that is integrally connected in the horizontal direction and communicated with a hollow portion in the main body, an upstream side pipe connection portion formed at one end of the tubular body, and the above It consists of the downstream side pipe connection part formed in the other end of a cylinder.

    Then, after the construction / civil engineering company purchases the drainage basin, it connects the building-side piping to the upstream piping connection of the drainage basin, and also connects the other sewage main side to the downstream piping connection. It is embedded in the site of each household, company, factory, etc. with pipes connected.

    However, since the drainage basin as described above is hollow, if heavy rain damage due to recent abnormal weather occurs frequently, for example, sewage from the sewage mains overflows and passes through the drainage basin from the piping on the building side. Damage to the bathroom, floor, etc. will occur, which is undesirable for health and hygiene.

    Furthermore, regardless of the weather conditions, bad odors may reversely enter the building from the sewer side through the same route as above, or dredging, cockroaches, etc. may enter.

    In view of this, a device has been devised in which a check valve is provided in the drainage basin to prevent the backflow of sewage and bad odors and to prevent the intrusion of dredging and cockroaches.

However, in the above-mentioned conventional check valve, there are many cases in which dust is clogged in the piping unless it is pumped by a pump due to structural problems. The current situation is.
In addition, a non-return valve composed of a solenoid valve has been developed.However, there is a problem that the check valve is expensive or does not operate due to a power failure or malfunction, and the use of this solenoid valve is avoided. There are many cases.

  Further, as shown in Patent Document 3 and Patent Document 4, those having a mechanical check valve in the drainage basin have been developed, which are inclined to the outlet of the inflow side piping attached to the drainage basin. A check valve is provided in the equation.

Similarly, as the same mechanical check valve, for example, as shown in Patent Document 5, an inflow side pipe on the building side and an outflow pipe on the sewer side are respectively connected to both sides of a cylindrical dredge body. A drainage basin with a backflow prevention and deodorizing valve has been developed that incorporates an elliptical check valve with a relatively simple structure in the middle of one outflow side pipe.
JP 2007-085172 A (refer to abstract and drawings) Japanese Patent Laid-Open No. 2001-065046 (see paragraph 0019, FIG. 1) JP 2006-183454 A (refer to abstract and drawings) JP 2006-283547 A (refer to the abstract drawing) Japanese Utility Model Publication No. 62-138789 (see Claims, FIG. 1)

  However, in the drainage basins of Patent Document 3 and Patent Document 4, the check valve mounting mechanism is complicated, and it cannot be easily attached to a commercially available drainage basin.

  Moreover, the drainage basin with a backflow prevention and deodorizing valve shown in Patent Document 5 has the following problems.

  First, since a check valve is provided in the outflow side pipe, it is not possible to attach only the check valve to the drainage basin. Purchase and manufacture pipes with this check valve each time. It is necessary to prepare, which is economically disadvantageous.

  Second, since the check valve is attached in the middle of the pipe as described above, the operation of assembling the check valve is troublesome and difficult. Moreover, it cannot be applied immediately to the existing drainage basin that has already been buried in the building site. To install the above-mentioned check valve, the underground drainage pipe and pipe are dug up once, and a check valve is newly provided. It is necessary to attach the pipe to the drainage basin and embed it again in the site, which is difficult to construct, and the construction cost is high, which is disadvantageous in terms of economy.

  Thirdly, since the check valve is composed of a shaft rod installed in the middle of the outflow side pipe and a valve body in which the middle part of the body is rotatably supported by this shaft rod, the valve body can be used in various directions. May cause the valve body to become unstable and prevent the backflow of sewage or the like from being properly prevented.

  Therefore, the object of the present invention is to prevent sewage and bad odors from flowing back into the building side piping from the sewer side piping side, and to prevent intrusion of dredging, cockroaches, etc. It is possible to provide a drainage basin that incorporates a check valve that can be prevented from accumulating, has a simple structure, and is easy to attach and detach.

In order to achieve the above object, the means of the present invention includes a cylindrical bowl body 5 having a hollow portion 5C in the vertical direction, and a continuous lower body of the bowl body 5 in the horizontal direction. A cylindrical tube 6 provided with a hollow portion 6A communicating with the hollow portion 5C in the main body 5; an upstream side pipe connection portion 6B formed at one end of the tube 6; and the other end of the tube 6 The downstream side pipe connection 6C is connected to the upstream side pipe connection 6B, and the building side pipe 3 is connected to the downstream side pipe connection 6C. Further, in the drainage basin where the cylindrical body 6E is erected on the upper part of the cylindrical body 6 and this cylindrical body 6E is fitted to the outer periphery of the casket body 5, and the cylindrical body 6 is integrally connected to the casket body 5. A support that is curved in a semicircular shape at a portion of the inner peripheral lower portion of the cylindrical body 6 that intersects the inner peripheral upper portion of the upstream pipe connecting portion 6B. A plate 9 is affixed, and the upper part of the check valve 1 is swingably coupled to the lower part of the support plate 9 via a hinge 2A so that the check valve 1 has an elliptical outline and a building. The back surface 1A facing the hollow portion 3A of the side pipe 3 is formed in a concave shape, and the front surface 1B facing the hollow portion 3B of the pipe 3 on the sewage main pipe side is formed in a convex shape, and the hinge 2A is connected to the support plate 9 The check valve 1 includes a pair of upper and lower holes 10 and 11 formed in the check valve 1 and a pair of rings 2B and 2B inserted into the holes 10 and 11, respectively. 6 is characterized in that it is inclined toward the downstream pipe connecting portion 6C along the lower surface 6D of the hollow portion 6A.

According to the invention of each claim, the following effects can be achieved.
1) Since the upper part of the check valve 1 is swingably coupled to the lower part of the inner periphery of the cylindrical body 6E and inclining to the part intersecting with the inner peripheral upper part of the upstream pipe connecting part 6B, the building side The drainage from the pipe 3 can be smoothly drained to the sewer side through the cylinder 3 on the sewer main side by pushing up the check valve 1 and opening it.
Moreover, since the check valve is in contact with the bottom surface 6D of the cylindrical body 6 while being inclined, the middle of the hollow portion 6A in the cylindrical body 6 is closed in a stationary state, and backflow water and bad odor from the sewer side are not checked. It is blocked by a valve and prevented from entering the building, preventing damage caused by flooding on the building side and maintaining sanitation.
Similarly, it is possible to prevent intrusion of moths and cockroaches, and to prevent plagues and other damages caused by these small animals.
2) Attach the hinge 2E composed of the rings 2B and 2B to the lower part of the inner periphery of the cylindrical body 6E,
Since the upper part of the check valve 1 is swingably coupled to the hinge 2E, only a commercially available drainage basin is prepared by preparing only the support plate 9, the rings 2B and 2B and the check valve 1 in advance. In addition, a new drainage can be obtained by simply and speedily attaching the check valve 1 to an existing drainage basin already embedded in the building site.
3) Since the contour of the check valve 1 is elliptical, the check valve 1 is connected via the hinge 2A.
Even if it swings up and down, it opens and closes smoothly without being caught by the inner periphery or bottom surface 6D of the cylindrical tube 6.
4) Since the lower end of the check valve 1 is along the lower surface 6D of the hollow portion 6A of the cylindrical body 6, there is no step between the lower end of the check valve 1 and the lower surface 6D, and as a result, the lower surface of the hollow portion 6A. It is possible to prevent dust and dirty water from remaining on 6D.
5) The check valve 1 has a front surface formed into a convex shape and a back surface formed into a concave shape so as to be curved.
Therefore, it has strength and can improve the durability against water pressure on which counter-current water acts.
6) Attach the check valve 1 by simply attaching the support plate 9 to the inner periphery of the cylindrical body 6E.
Therefore, the check valve 1 can be easily attached and can be easily removed for repair or replacement.

  Embodiments of the present invention will be described below with reference to the drawings.

Embodiments of the present invention will be described below with reference to the drawings.
1 and 2 show a drainage basin according to a basic embodiment of the present invention, and FIGS. 3 to 7 show a drainage basin and a check valve according to an embodiment corresponding to the invention of claim 1.

  The drainage basin according to each of the above embodiments is similar to the conventional drainage basin disclosed in Patent Documents 1 and 2, etc., and the cylindrical basin body 5 having a hollow portion 5C in the vertical direction, Formed at one end of the cylindrical body 6 and a cylindrical cylindrical body 6 provided with a hollow portion 6 </ b> A that is integrally connected to the lower portion of the main body 5 in the horizontal direction and communicates with the hollow portion 5 </ b> C in the cage main body 5. The upstream side pipe connection part 6B and the downstream side pipe connection part 6C formed at the other end of the cylindrical body 6 are connected to the upstream side pipe connection part 6B. The pipe 3 on the other sewage main side is connected to the side pipe connecting part 6C.

  In the drainage dredger according to each embodiment, as can be seen from FIG. 2 and FIG. 4, the hinge 2 or 2 </ b> A is provided at a portion where the inner peripheral lower portion of the dredge main body 5 and the inner peripheral upper portion of the upstream side pipe connection portion 6 </ b> B The upper part of the check valve 1 whose outline is formed in an elliptical shape is swingably coupled to the hinge 2 or 2A, and the lower end of the check valve 1 is connected to the cylindrical body 6 It is made to incline toward the said downstream side pipe connection part 6C along the lower surface 6D of the hollow part 6A.

  In this case, the check valve 1 is attached to a commercially available drainage basin or an existing drainage basin embedded in the ground after the cover 4 is removed. For this reason, a new drainage basin equipped with a check valve can be formed easily and speedily, and the check valve can be easily removed for replacement or repair.

  As can be seen from FIGS. 2, 5, and 7, the check valve 1 has a back surface 1 </ b> A that faces the hollow portion 3 </ b> A of the building-side pipe 3 in a concave shape, and the hollow portion of the pipe 3 on the sewage main pipe side. A front surface 1B facing 3B is formed in a convex shape.

  In the embodiment of FIGS. 1 and 2, the bag main body 5 and the cylindrical body 6 are integrally formed. In other embodiments of FIGS. 3 and 4, the cylindrical body 6 </ b> E is provided above the cylindrical body 6. The cylindrical body 6E is fitted to the outer periphery of the heel body 5, and the cylinder body 6 is integrally connected to the heel body 5.

  Furthermore, in the drainage basin of FIGS. 3 and 4, a semicircular curved support plate 9 is attached to the inner periphery of the cylindrical body 6E by bonding or the like, and the upper part of the check valve 1 is hinged to the lower part of the support plate 9 2A is swingably coupled. The support plate 9 may be attached with bolts, screws or the like.

    Also in the embodiment of FIG. 1, the same mechanism as described above may be employed by attaching the same support plate 9 as described above to the inner periphery of the bag main body 5.

    In this case, as shown in FIGS. 5 and 6, the hinge 2 </ b> A is composed of holes 10 and 11 formed in the support plate 9 and the check valve 1, respectively, and a ring 2 </ b> B inserted into these holes 10 and 11. ing.

    As shown in FIG. 8, the check valve 1 may be constituted by a flat plate having an elliptical outline.

    The drainage basin of the present invention has a building side pipe 3 connected to the upstream side pipe connection part 6B, and another sewage main pipe side pipe 3 connected to the downstream side pipe connection part 6C, as in the prior art. The drainage flowed from the pipe 3 is discharged to the sewer through the pipe 3 on the sewage main pipe side.

    That is, as shown in FIG. 4, the main body 5, the cylindrical body 6, and the pipes 3 and 3 are embedded in the grounds of the building and used, and the wastewater discharged from the building side pipe 3 is discharged from the building side. It is discharged to the sewage side through the pipe 3 on the building side pipe 3-cylinder 6-sewage main pipe side.

    Further, as in the conventional case, when the pipes 3 and 3 are clogged, the lid 4 is opened and the inspection is performed from the hollow portion 5C of the bag main body 5.

    The lid 4 is preferably bonded to the heel body 5 via a chain 10 as shown in FIG.

    In the present invention, as described above, the contour of the outer periphery of the check valve 1 is made elliptical when viewed from the front and the back, so that the lower part of the check valve 2 is moved up and down via the hinge 2 or 2A. Even if it swings, it opens and closes smoothly without being caught on the inner periphery or bottom surface of the hollow portion 6A of the cylindrical tube 6.

    In addition, since the check valve 1 is inclined toward the downstream side pipe connection part 3 along the lower surface of the hollow part 6C, the building side drainage flows in a natural flow direction as shown in FIGS. When starting from 8, the check valve 1 can be fully opened upward by its own water pressure to smoothly flow out to the pipe 3 on the sewage main side, but the sewage flows backward from the sewage main side. Even if it flows backward from direction 7, the check valve 1 is urged in the closing direction by the water pressure of this sewage and does not open, so that the sewage does not enter the pipe 3 on the building side and is discharged from the opening of the main body 5 to the outside. Let

    Furthermore, since the check valve 1 is always inclined and closed, it is possible to prevent bad odors from entering the building from the sewer direction, and to prevent small animals such as cormorants and cockroaches and pests from entering the building. I can stop.

It is a plane part of the state which connected piping to the drainage basin concerning basic embodiment of this invention. It is a vertical side view of FIG. It is a perspective view of a drainage basin according to an embodiment corresponding to the invention of claim 1 . It is a vertical side view of the drain shown in FIG. It is a perspective view of a hinge and a check valve. FIG. 6 is a longitudinal side view of the hinge and check valve of FIG. 5. FIG. 6 is a cross-sectional plan view of the check valve of FIG. 5. It is a perspective view of the non-return valve concerning other embodiments.

Explanation of symbols

1 Check valve 2 Hinge 2A Hinge
3 piping 3A hollow portion 4 lid 5 枡 body 6 cylinder 6A hollow portion 6B upstream side pipe connection portion 6C downstream side pipe connection portion 6D lower surface 6E cylindrical body 10 hole 11 hole

Claims (1)

A cylindrical bowl body 5 having a hollow section 5C in the vertical direction, and a hollow section 6A that is integrally connected to the lower portion of the bowl body 5 in the horizontal direction and communicates with the hollow section 5C in the bowl body 5. A cylindrical pipe body 6 provided with the above, an upstream pipe connection part 6B formed at one end of the cylinder body 6, and a downstream pipe connection part 6C similarly formed at the other end of the cylinder body 6, The building-side piping 3 is connected to the upstream piping connection 6B, the other piping 3 on the sewage main pipe side is connected to the downstream piping connection 6C, and the cylindrical body 6E is erected above the cylindrical body 6. In the drainage basin in which the cylindrical body 6E is fitted to the outer periphery of the casket body 5 and the cylinder body 6 is integrally connected to the casket body 5, the inner peripheral lower portion of the cylindrical body 6 is located on the upstream side. A support plate 9 that is curved in a semicircular shape is affixed to a portion that intersects with the inner peripheral upper portion of the pipe connection portion 6B, and a check is placed under the support plate 9 The upper part of 1 is suspended and coupled via a hinge 2A so that the check valve 1 has an elliptical outline, and the back surface 1A facing the hollow part 3A of the building-side pipe 3 is concave. A front surface 1B that is formed and faces the hollow portion 3B of the pipe 3 on the sewage main pipe side is formed in a convex shape, and a pair of upper and lower holes 10 and 11 formed by the hinge 2A in the support plate 9 and the check valve 1 respectively. And a pair of rings 2B and 2B inserted into the holes 10 and 11, and the downstream pipe while the lower end of the check valve 1 is along the lower surface 6D of the hollow portion 6A of the cylindrical body 6 A drainage basin characterized by being inclined toward the connecting portion 6C.

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