JP2012162981A - Check valve and drainage facility - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a check valve and a drainage facility for preventing drainage and bad odor from reversely flowing from an outflow pipe to an inflow pipe, relating to the check valve and the drainage facility.SOLUTION: A check valve 10 comprises: a saddle 16; a valve tube 22 connected to an inner side of the saddle 16; and a valve body 28 openably closing an inclined end surface 22a of the valve tube 22. When the check valve 10 is attached to a basin 12, the saddle 16 is fixed to the basin 12 with a cutoff material 20 by adjusting a tube bottom of the valve tube 22 to a pipe bottom of the inflow pipe 14 while an outer surface of the saddle 16 is positioned alongside an inner surface of the basin 12. Bad smell and drainage are prevented from breaking into an inflow pipe 14 and further to the house from the basin 12, by blocking the valve tube 22 openably and closably by means of the valve body 28. The saddle 16 can be easily mounted to the existing basin 12, by positioning the saddle 16 alongside the basin 12. The check valve 10 can be visually inspected and checked from the upper side of the basin 12, by positioning the valve tube 22 and the valve body 28 inside of the basin 12.

Description

  The present invention relates to a check valve and a drainage facility, and more particularly to, for example, a check valve and a drainage facility that prevent drainage and malodor from flowing back from an outflow pipe to an inflow pipe.

  A conventional check valve has a water stop member such as a rubber ring, and is attached to, for example, an outflow pipe connected to a downstream side of concrete. For example, in the case of a shunt flow type, if there is a heavy rain, drainage from the sewage main pipe flows back through the outflow pipe, the water pressure acts on the valve body, and the check valve may be pushed out of the outflow pipe. In this case, drainage and bad odor due to drainage may enter the house.

  In addition, since the check valve is arranged in the outflow pipe, it is difficult to install the check valve, and when checking the check valve visually from the upper opening of the strip, it is necessary to use a special tool such as an inspection mirror. It was difficult to maintain the check valve, and there was a problem in the maintenance of the check valve.

  A technique for solving these problems is disclosed in Patent Document 1. In the check valve in the drainage basin of Patent Document 1, an upstream pipe connection portion is provided in the drainage basin, and a valve body is suspended in the upstream pipe connection portion so as to be swingable. Normally, the valve body is drooping. However, when the water level rises, the valve body is pushed to close the upstream pipe connection.

In the prior art of Patent Document 1, since the valve body is suspended in the upstream connection portion, there is no separation due to an increase in the amount of drainage, and visual inspection is possible to some extent.
JP 11-241394 A [E03F 5/10]

  However, in the prior art of Patent Document 1, since a gap is formed between the valve body and the pipe body except when the drainage water level rises, bad odors enter the house through this gap. Furthermore, since a step is formed between the pipe body of the upstream pipe connection part and the receiving port, the upstream pipe connection part is applied to an existing pipe where the bottom part of the inflow pipe and the bottom part of the invert pipe are on the same level. Can not do it.

  Therefore, a main object of the present invention is to provide a check valve and a drainage facility that can prevent the backflow of drainage with reliable deodorization, can be visually inspected, and can be applied to an existing drainage facility.

  The invention according to claim 1 is a check valve mounted in a drainage facility to which an inflow pipe and an outflow pipe are connected, wherein the outer surface is a saddle along the inner surface of the drainage facility, and a valve pipe formed on the inner surface side of the saddle. And a check valve provided with a valve body for closing the end face of the rear end of the valve tube so as to be freely opened and closed.

  In the invention of claim 1, for example, the check valve is carried into a drainage facility connected to the inflow pipe, the outer surface of the check valve saddle is set along the inner surface of the drainage facility, and the check valve is placed in the drainage facility. Attach to.

  Since the valve pipe is formed on the inner surface side of the saddle and the valve body is attached to the end face of the rear end of the valve pipe so as to be freely opened and closed, the valve pipe and the valve body are located in the drainage facility. For this reason, a valve body and a valve pipe can be visually inspected from an upper opening of a drainage facility.

  Further, when the valve body closes the end surface of the rear end of the valve pipe so that the valve pipe can be opened and closed, when drainage flows into the drainage facility through the valve pipe, the drainage pushes the valve body open and flows into the drainage facility. On the contrary, when the drainage is going to flow backward from the drainage facility side into the valve pipe, that is, the inflow pipe side, the drainage presses the valve body against the end face, so the valve body closes the valve pipe and the backflow of drainage is prevented.

  In this way, except when drainage flows into the drainage facility, the valve body blocks the valve pipe, so the drainage facility and the inflow pipe are always shut off, and odors in the drainage facility enter the house through the inflow pipe. Never do.

  In addition, if a saddle is attached to the inner surface of the drainage facility using an adhesive or an appropriate presser, the check valve is fixed to the inner surface of the drainage facility, and the check valve does not come off due to the backflow of drainage.

  The invention according to claim 2 is the check valve according to claim 1, further comprising a presser for pressing the saddle against the inner surface of the drainage facility.

  In the invention of claim 2, the check valve is fixed to the drainage facility by pressing the saddle against the inner surface of the drainage facility with the presser. For this reason, the check valve can continue to maintain functions such as backflow prevention and deodorization without coming off due to backflow of drainage.

  The invention according to claim 3 is the check valve according to claim 1, further comprising an invert formed integrally with the valve pipe.

  In the invention of claim 3, the waste water flows into the valve pipe from the inflow pipe side, and pushes up the valve body to flow in the invert. By using this check valve, invert can be employed at the same time.

  The invention of claim 4 is a drainage facility using the check valve according to claim 1, comprising a main body and an inflow pipe and an outflow pipe connected to the main body, and a saddle corresponding to the position of the inflow pipe. It is a drainage facility provided with a presser for fixing the saddle to the inner surface of the drainage facility along the inner surface of the drainage facility.

  In the fourth aspect of the invention, the check valve is prevented from being detached by fixing the saddle to the inner surface of the drainage facility with the presser after attaching the check valve to the drainage facility as in the first aspect.

  The invention of claim 5 includes a main body having a side wall with an upper opening, holes formed in the inflow side and outflow side walls, a valve pipe having an inner surface formed integrally with the side wall and communicating with the inflow side hole, And a drainage facility provided with a valve body for closing the end face of the rear end of the valve tube so as to be freely opened and closed.

  In the invention of claim 5, for example, when the inflow pipe is connected to the inflow side hole of the drainage facility, the wastewater flowing in from the inflow pipe flows into the valve tube from the hole, and opens the valve body to flow into the drainage facility. . On the other hand, when drainage flows backward from the drainage facility to the inflow pipe side, the valve body closes the end face of the rear end of the valve pipe with the pressure of drainage, and the backflow of drainage is prevented.

  The invention according to claim 6 is a check valve mounted in a drainage facility to which an inflow pipe and an outflow pipe are connected, and a saddle along the inner surface of the drainage facility and a connection pipe formed on the inner surface side of the saddle. The check valve includes a valve pipe whose front end is provided in the connection pipe continuously with the connection pipe, and a valve body that covers the end face of the rear end of the valve pipe so as to be freely opened and closed.

In the invention of claim 6, the connecting pipe is joined to the outflow pipe with the outer surface of the saddle being along the inner surface of the drainage facility, and the check valve is attached to the drainage facility. When drainage flows from the drainage facility side to the outflow pipe side, the drainage flows out through the valve pipe by pushing the valve body open. On the other hand, when drainage flows backward from the outflow pipe side to the drainage facility side, the drainage flows into the connecting pipe and the valve body is pressed against the rear end surface, thereby preventing the backflow of drainage.

  The invention according to claim 7 is a main body, an inflow pipe and an outflow pipe connected to the main body, a valve pipe having an outer diameter equal to or smaller than the inner diameter of the outflow pipe, and a valve body for closing the end face of the rear end of the valve pipe so as to be freely opened and closed , As well as a drainage facility provided with a stop fixed to the main body and pressing the end face of the valve wall of the valve pipe.

  In the invention of claim 7, when the valve pipe is inserted into the outflow pipe, a stopper is applied to the end surface of the pipe wall of the valve pipe, and the stopper is fixed to the drainage facility, the valve pipe does not hit the stopper even if the drainage flows backward. The check valve does not come out of the outflow pipe.

  The invention of claim 8 is a check valve mounted in a drainage facility to which an inflow pipe and an outflow pipe are connected, and the saddle whose outer surface is along the inner surface of the drainage facility, and any one of the inflow pipe and the outflow pipe It is a non-return valve provided with the valve body which plugs up opening of this so that opening and closing is possible.

  In the invention of claim 8, the saddle can be attached to an existing drainage facility by placing the outer surface of the saddle along the inner surface of the drainage facility.

  Further, when a saddle is attached to the inner surface of the drainage facility to which the inflow pipe or the outflow pipe is connected, the valve body closes the opening of the inflow pipe or the outflow pipe so as to be freely opened and closed. Thereby, if the valve body is opened, the inflow pipe or the outflow pipe can be visually inspected. Further, when the drainage flows backward, the valve body closes the opening by the water pressure, so that the drainage of the drainage is prevented. Further, since the valve body closes the opening except when the drainage flows in, the intrusion of bad odor is prevented.

  The invention according to claim 9 is the check valve according to claim 8, further comprising a presser for pressing the saddle against the inner surface of the drainage facility.

  In the invention of claim 9, if the saddle is pressed against the inner surface of the drainage facility with the presser, the check valve is fixed to the drainage facility. For this reason, the check valve is prevented from being detached, and the check valve can continue to maintain the deodorizing and backflow preventing actions.

  The invention of claim 10 is a drainage facility comprising a main body having a side wall with an upper surface opening, holes formed in the inflow side and outflow side walls, and a valve body for closing and opening the hole.

  In the invention of claim 10, if the inflow pipe or the outflow pipe is connected to the hole formed in the side wall of the main body and the valve body for closing the hole is opened and closed, the inflow pipe or the outflow pipe can be visually maintained. it can.

  In addition, the drainage flowing from the inflow side flows up by pushing up the valve body. At other times, the valve body closes the hole, so that it is possible to prevent intrusion of malodor.

  Further, since the valve body closes the hole with the water pressure of the drainage that flows backward from the outflow side, the drainage of the drainage can be prevented.

According to this invention, the check valve can be easily attached to the existing drainage facility by placing the saddle along the inner surface of the drainage facility. Further, the check valve can be visually inspected from the upper opening of the drainage facility by forming the saddle along the inner surface of the drainage facility and forming the valve pipe on the inner surface side of the saddle. Since the valve body normally closes the inclined end face of the valve pipe, drainage and bad odor do not flow into the house.

  The above object, other objects, features and advantages of the present invention will become more apparent from the following detailed description of embodiments with reference to the drawings.

It is a perspective view which shows the non-return valve of one Example of this invention. It is sectional drawing which shows the state which attached the check valve of FIG. It is a top view which shows the side surface of the non-return valve of FIG. 1 Example. It is a top view which shows the upper surface of the non-return valve of FIG. 1 Example. It is a top view which shows the front surface of the non-return valve of FIG. 1 Example. It is a perspective view which shows the state which fixed the check valve further using the diameter expansion stainless steel band. It is sectional drawing which shows the state which fixed the check valve further using the U-shaped jig | tool and the anchor bolt. It is a top view which shows the non-return valve of the other Example of this invention. FIG. 9 is a plan view showing a state where the presser of the check valve of the embodiment in FIG. 8 is lowered. It is a top view which shows the state which raised the pressing tool of the non-return valve of FIG. 8 Example. 8 is a cross-sectional view showing a state where the check valve of the embodiment in FIG. It is a top view which shows the non-return valve of another Example of this invention. (A) is sectional drawing which shows the non-return valve of another Example of this invention, (B) is sectional drawing which shows the state which attached the pressing tool to the non-return valve of (A), (C ) Is a cross-sectional view showing a state in which the presser of (B) is lowered. (A) is sectional drawing which shows the non-return valve of another Example of this invention, (B) is a top view of (A). It is a top view which shows the non-return valve of another Example of this invention. (A) is a top view which shows the saddle used for the non-return valve of FIG. 16, (B) is a top view which shows the pressing tool attached to the non-return valve of (A). (A) is a top view which shows the state which attached the check valve shown in FIG. 15 further, (B) is sectional drawing of (A). It is a perspective view which shows the non-return valve of another Example of this invention. (A) is a top view which shows the rear surface of the non-return valve of FIG. 18 Example, (B) is a top view which shows the side surface of (A). FIG. 19 is a cross-sectional view showing a state where the check valve of the embodiment in FIG. It is sectional drawing which shows the non-return valve of another Example of this invention. It is sectional drawing which shows the non-return valve of FIG. 21 Example. FIG. 22 is a cross-sectional view showing a state where the check valve of the embodiment in FIG. It is sectional drawing which shows the non-return valve of another Example of this invention. It is sectional drawing which shows the non-return valve of another Example of this invention. It is sectional drawing which shows the state which attached the non-return valve of another Example of this invention further. It is sectional drawing which shows the state which pressed down the non-return valve shown in FIG. 26 with the presser.

  A check valve 10 according to an embodiment of the present invention shown in FIG. 1 is installed in a drainage facility such as a mushroom 12 as shown in FIG. 2 to prevent drainage from flowing back from the inside to the inflow pipe 14. .

As shown in FIGS. 1 to 5, the check valve 10 has a saddle 16. The saddle 16 is formed using vinyl chloride, steel, hard rubber, or the like. Its outer surface is increasingly curved along the inner surface of twelve. A notch 17 is formed in the lower portion of the saddle 16.

  A water blocking material 20 is provided on the outer surface of the saddle 16. The water blocking material 20 is, for example, butyl tape or flat rubber, and styrene rubber, ethylene propylene rubber, chloroprene rubber, or the like is used as the flat rubber.

  A valve tube 22 is formed integrally with the saddle 16 on the inner surface side of the saddle 16 by injection molding or secondary processing. The outer diameter of the valve pipe 22 is equal to or larger than the inner diameter of the inflow pipe 14. A part of the opening 18 at the front end of the valve tube 22 is joined to the notch 17 of the saddle 16, and the inner surface of the valve tube 22 is continuous with the notch 17. A water stop material 23 is attached to the lower part of the valve tube 22. The water stop material 23 is, for example, butyl tape or flat rubber, and styrene rubber, ethylene propylene rubber, chloroprene rubber, or the like is used as the flat rubber.

  The end surface 22a at the rear end of the valve tube 22 is inclined. The end surface 22a protrudes toward the inner surface of the saddle 16 from the upper part to the lower part of the end surface 22a, and the inclined end surface 22a faces obliquely upward.

  A valve body 28 is attached to the upper portion of the inclined end surface 22a of the valve tube 22 by a hinge 26 or the like. The size of the valve body 28 is larger than the inner diameter of the inclined end surface 22a, and the valve body 28 closes the inclined end surface 22a so as to be freely opened and closed. That is, the normal valve body 28 is placed on the inclined end surface 22a facing obliquely upward due to gravity, and closes the inclined end surface 22a of the valve tube 22. When the inner surface of the valve body 28 is pushed from the inside of the valve pipe 22, the valve body 28 opens outward, and when the outer surface of the valve body 28 is pushed, the valve body 28 hits the pipe wall of the valve pipe 22 and the inclined end face of the valve pipe 22. Block 22a. A rubber packing 24 or the like is attached to the valve body 28.

  As shown in FIG. 2, the check valve 10 is mounted in a concrete existing building 12. An inflow pipe connection hole 30 and an outflow pipe connection hole 32 are formed on the first 12 side walls. The inflow pipe 14 is connected to the inflow pipe connection hole 30, the outflow pipe 34 is connected to the outflow pipe connection hole 32, and the mortar 36 is filled between the connection holes 30, 32 and the pipes 14, 34. Further, an invert 38 is provided at the bottom of the twelve.

  The check valve 10 is further carried into the seat 12 so that the saddle 16 is on the upper side and the valve pipe 22 is on the lower side. The outer surface of the saddle 16 is made to conform to the inner surface of the inflow pipe 12 so that the bottom of the valve pipe 22 coincides with the bottom of the inflow pipe 14, and the outer surface of the saddle 16 is bonded to the inner surface of the further 12 with the water stop material 20. . As a result, the valve pipe 22 is positioned more and more within 12, and the inclined end surface 22a of the valve pipe 22 faces obliquely upward.

  When the check valve 10 is further installed in the valve 12, the valve body 28 of the check valve 10 closes the inclined end surface 22 a of the valve pipe 22 except when drainage flows into the gas 12. When drainage flows from the inflow pipe 14 to the further 12, the drainage flows into the valve pipe 22, pushes the inner surface of the valve body 28 to open the valve body 28, flows over the invert 38, and flows out to the outflow pipe 34. When the flow of drainage stops again, the valve element 28 closes the inclined end surface 22a of the valve tube 22.

  On the other hand, when the drainage flows back into the pipe 12 further from the outflow pipe 34 due to the heavy rain or the like, the drainage pushes the outer surface of the valve body 28 and the valve body 28 closes the valve pipe 22. The valve body 28 prevents the drainage from flowing into the valve pipe 22, the inflow pipe 14, and the house in front of the inflow pipe 14.

In the maintenance management of the check valve 10, when the appearance of the check valve 10 is inspected, the appearance of the saddle 16, the valve pipe 22, the valve body 28, etc. in the 12 is further inspected from the upper opening of the 12. When checking the inside of the valve pipe 22, the valve body 28 is opened from the upper opening of the first 12, and the inside of the valve pipe 22 is checked from the inclined end surface 22 a of the valve pipe 22 facing obliquely upward. Further, the saddle 16 can be inspected by removing it from the inside.

  In this way, the check valve 10 is simply attached to the existing 12 by placing the check valve 10 on the outer surface of the saddle 16 along the inner surface of the check valve 12 and attaching the check valve 10 to the check valve 12 with the water stop material 20. Can be attached to.

  In addition, when the valve body 28 closes the inclined end surface 22a so that it can be opened and closed, when drainage flows from the inflow pipe 14 to the further 12, the drainage flows by pushing the valve body 28 open. In the case of backflow to the inflow pipe 14 side, the drainage presses the valve body 28 against the inclined end surface 22a, the backflow of drainage is prevented by the valve body 28, and the drainage does not enter the house.

  In this way, except when drainage flows into the valve 12, the valve element 28 blocks the inclined end surface 22a of the valve tube 22. Therefore, the valve element 28 always shuts off the inlet 12 and the inlet tube 14, and the odors in the valve 12 are gradually introduced. It does not enter the house through the pipe 14.

  Further, by positioning the valve tube 22 within the position 12 and orienting the inclined end surface 22a of the valve tube 22 diagonally upward, the valve element 28, the valve tube 22 and the like can be visually inspected from the upper opening of the valve 12, etc. If the body 28 is opened, the inside of the valve pipe 22 can be visually inspected, so that the check valve 10 can be maintained and managed easily and appropriately.

  In addition, when the check valve 10 is mounted in the inner part 12, an expanded band or the like can be used. The expanded band is, for example, an expanded stainless steel band 40 shown in FIG. After the check valve 10 is attached to the main body 12, the inner diameter of the expanded stainless steel band 40 is made smaller than the inner diameter of the inner diameter 12 and the expanded stainless steel band 40 is inserted into the inner diameter 12. The diameter-expanded stainless steel band 40 is fitted into the inner wall 12 so that the diameter-expanded stainless steel band 40 is horizontal and passes over the inner surface of the saddle 16. Then, when the diameter-expanded stainless steel band 40 is expanded by the clamp 42 or the like, the diameter-expanded stainless steel band 40 expands and presses the saddle 16 against the inner surface of 12. The check valve 10 is pressure-bonded to the length 12 by the expanded stainless steel band 40 and firmly fixed. For this reason, not only the separation prevention function of the check valve 10 is improved, but also the close contact between the saddle 16 and the main body 12 is increased and the backflow prevention function is improved.

  Apart from this fixing method, the check valve 10 can also be fixed by an anchor bolt or the like. For example, a U-shaped jig 44 shown in FIG. 7 is used. A through hole 44 a for the anchor bolt 46 is formed in the leg portion of the U-shaped jig 44. In this case, after the saddle 16 is attached to the mass 12, the U-shaped jig 44 is fitted into the valve tube 22 from above. Then, the anchor bolt 46 is inserted and fixed in the through hole 44 a of the U-shaped jig 44.

  A check valve 10 according to another embodiment of the present invention shown in FIG. 8 is obtained by attaching a presser 47 to the check valve 10 shown in FIG. For this reason, the latch receiving part 50 is provided on the saddle 16 of the check valve 10 and the parts other than the latch receiving part 50 locking the presser 47 are the same as those of the check valve 10 shown in FIG. Therefore, the description is omitted.

  The latch receiving portion 50 is provided outside the valve pipe 22 on the inner surface of the saddle 16. For example, two opposing plates 52 are provided. A through hole 52a is formed in each plate 52, and a round bar 54 is inserted into each of the through holes 52a.

The presser 47 is formed by connecting a contact plate 49 to a support bar 48 and connecting, for example, two support bars 48 with a connecting member 56. The support bar 48 is rod-shaped, and a locking hole 48a is formed at one end thereof. The diameter of the locking hole 48 a is larger than the diameter of the round bar 54. The other end of the support bar 48 is connected to the cheese joint 57. The cheese joint 57 has three receptacles, and the support rod 48 is connected to one of the receptacles, and the connecting member 56 is connected to the receptacle at a position of 90 degrees. The connecting member 56 is vertically connected to the support bar 48 and is also connected to another support bar 48 to connect the two parallel support bars 48. Further, the contact member 49 is connected to a receiving port to which the support rod 48 is connected and a receiving port at a position of 180 degrees. The contact member 49 is formed by connecting a mounting bar 49b to a contact plate 49a, and the mounting bar 49b is linearly connected to the support bar 48 by a cheese joint 57. The contact plate 49a has a flat plate shape and is tapered at its upper and lower ends.

The length of the presser 47, that is, the length L of the abutment member 49 attached to the support rod 48 via the cheese joint 57 is the radius R of 12 for attaching the check valve 10 and the interval W of the latch receiving portion 50.
When the distance between the outer surface of the saddle 16 and the end of the support bar 48 when the support bar 48 is attached to the latch receiving part 50 is S, it is expressed by Equation 1. The contact plate 49a is connected to the mounting rod 49b at an angle θ, and is expressed as cos θ = W / 2R.

  Each support bar 48 of the presser 47 is inserted between the two plates 52 of each locking receiving portion 50, and the round bar 54 is inserted into the locking hole 48 a of the supporting rod 48 and the through hole 52 a of the locking receiving portion 50. Then, the support rod 48 is attached to the inner surface of the saddle 16 outside the valve tube 22. Then, the inner surface of the locking hole 48a of the support bar 48 slides on the round bar 54, and as shown in FIG. 9 and FIG.

  When the check valve 10 is attached to the main body 12 as shown in FIG. 11, the check valve 10 is further carried into the state 12 with the presser 47 standing vertically (first state). The bottom of the valve pipe 22 is aligned with the bottom of the inflow pipe 14, the outer surface of the saddle 16 is aligned with the inner surface of 12, and the saddle 16 is further fixed to 12 with the water stop material 20. When the position of the saddle 16 is determined, the presser 47 is lowered to be in the horizontal state (second state), and the contact plate 49a of the presser 47 comes into contact with the position facing the saddle 16 on the inner surface of twelve. As a result, the presser 47 presses the saddle 16 against the inner surface of the twelve, and the check valve 10 is fixed to the twelve.

  In this way, by attaching the presser 47 to the saddle 16 so as to be vertically displaceable, if the presser 47 is raised, the checker 10 can be carried into the valve 12 without getting in the way. If the presser 47 is lowered, the check valve 10 can be fixed in the interior 12.

  Then, the check valve 10 can be strongly and easily fixed to the base 12 by lowering the presser 47 and pressing the saddle 16 against the base 12. For this reason, even if drainage flows backward, the check valve 10 does not come off from 12 further.

  Although the presser 47 is attached to the check valve 10 so as to be vertically movable by the locking hole 48a of the presser 47 and the round bar 54 of the lock receiving portion 50, the presser 47 is attached to the check valve 10. This method is not limited to this method as long as vertical displacement is possible.

  In addition, the length of the presser 47 is preliminarily set according to Equation 1, but an elastic member for adjusting the length is attached to the presser 47 and the length of the presser 47 is adjusted so that the length according to Equation 1 is obtained. You can also The elastic member is, for example, a turnbuckle 58 shown in FIG. As a result, the length of the presser 47 can be adjusted, and can be made to correspond to the size and shape of 12 or the mounting position of the latch receiving portion 50.

  Furthermore, the presser 47 may not be attached to the saddle 16 in advance, and the presser 47 and the check valve 10 may be provided as separate members, and the presser 47 may be attached to the check valve 10 during construction. Therefore, instead of the locking hole 48a, a notch 48b is formed in the support bar 48 of the presser 47 as shown in FIG. The notch 48 b is a recess that is recessed in the length direction from the end of the support bar 48. When the check valve 10 is fixed to the main body 12, the saddle 16 is attached to the main body 12 with the water stop material 20, and then the presser 47 is set up vertically so as to receive the lock from above as shown in FIG. The notch 48 b is fitted into the round bar 54 of the portion 50. Then, as shown in FIG. 13C, the presser 47 is lowered, and the contact plate 49a of the presser 47 is applied to the position facing the saddle 16 on the inner surface of the twelve, so that the saddle 16 is pressed against the inner surface of the twelve. wear.

  In addition to the presser 47 shown in FIG. 13A, the presser 47 shown in FIGS. 14A and 14B can also be used. In FIG. 13A, a notch 48b is formed in the support bar 48, and this notch 48b is fitted to the round bar 54 of the locking receiving portion 50 of the saddle 16, but in FIGS. 14A and 14B, On the contrary, a round bar 54 is attached to the support bar 48, and a notch 52 b is formed in the plate 52 of the latch receiving part 50. Therefore, the round bar 54 of the support bar 48 is fitted into the notch 52 b of the latch receiving part 50, and the presser 47 is attached to the saddle 16.

  Further, the check valve 10 shown in FIG. 15 is formed by attaching the presser 100 shown in FIG. 16B to the saddle 16 shown in FIG. A lock receiving portion 102 is provided on the inner surface of the saddle 16, and the lock receiving portion 102 has a shape obtained by cutting a tube obliquely. Further, the presser 100 has two support bars 104, and the two support bars 104 are connected by a connecting member 106. Each support bar 104 is bent and has a stretchable portion 110 at a bent portion 108. As shown in FIG. 17A, the bending angle is such that the bent portion 108 of the support rod 104 is perpendicular to or substantially perpendicular to the inner surface of the side wall of the 12 in the state where the tip of the support rod 104 is fitted to the locking receiving portion 102. It is set to be a right angle. Then, as shown in FIGS. 17 (A) and 17 (B), the saddle 16 is attached to the inner surface of 12 and the tip of the support bar 104 is fitted to the latch receiving portion 102, and then the telescopic portion 110 is adjusted. As a result, the presser 100 presses the saddle 16 against the side wall of the twelve, and the check valve 10 is fixed to the twelve.

  A check valve 10 according to another embodiment of the present invention shown in FIG. 18 is a check valve 10 provided with an invert 59 on the check valve 10 shown in FIG. For this reason, the parts other than the invert 59 and the valve pipe 22 being integrally formed and the hole 19 provided in the saddle 16 instead of the notch 17 are the same as those of the check valve 10 shown in FIG. Therefore, explanation is omitted.

  As shown in FIGS. 18 to 19 (B), the hole 19 of the saddle 16 is provided in the saddle 16 so that the bottom of the saddle 16 is aligned with the bottom of the valve tube 22.

  The invert 59 has a shape obtained by cutting a circular cross section of a cylindrical tube in half, and a flange 60 is provided at the linear end portion thereof. The invert 59 is integrally formed with the valve tube 22 by injection molding or secondary processing, and its end is joined to the inner surface of the saddle 16.

  When the check valve 10 is attached to the main body 12, as shown in FIG. 20, the check valve 10 is carried into the main body 12 so that the invert 59 is on the lower side. The height of the bottom of the hole 19 is adjusted to the height of the bottom of the inflow pipe 14, the height of the bottom of the invert 59 is adjusted to the height of the bottom of the outflow pipe 34, and the outer surface of the saddle 16 Adhere with the water stop material 20 along Then, the invert 59 is filled with a filler 61 such as concrete to fix the check valve 10.

As a result, not only around the invert 59 but also the lower part of the saddle 16 is buried in the filler 61, so that the check valve 10 is further fixed in the interior 12. Therefore, it is not necessary to use the presser 47 or the like specially for preventing the check valve 10 from being detached.

  Further, by using the check valve 10, the invert 59 can be adopted at the same time.

  A check valve 10 according to another embodiment of the present invention shown in FIG. 21 is a check valve 10 for attaching to the outflow pipe 34 side of the first 12 shown in FIG.

  As shown in FIGS. 21 to 23, the check valve 10 has a saddle 16. The saddle 16 is the same as the saddle 16 shown in FIG. A notch 17 is provided at the bottom of the saddle 16. A water blocking material 20 is provided on the outer surface of the saddle 16 and outside the notch 17.

  A connecting pipe 62 is formed integrally with the saddle 16 on the inner surface side of the saddle 16 by injection molding or secondary processing. The outer diameter of the connecting pipe 62 is equal to or larger than the inner diameter of the outflow pipe 34. A part of the opening 18 at one end of the connecting pipe 62 coincides with the notch 17 of the saddle 16, and the inner surface of the connecting pipe 62 continues to the notch 17. The other end of the connection pipe 62 is connected to the valve pipe 64. A valve pipe 64 is formed from the other end of the connection pipe 62 into the connection pipe 62.

  The front end of the valve pipe 64 is continuous with the connection pipe 62, and the end face of the rear end of the valve pipe 64 is inclined. The end surface 64a protrudes toward the inner surface side of the saddle 16 from the upper part to the lower part of the end surface 64a, and the inclined end surface 64a is inclined and faces obliquely upward.

  The valve body 28 is attached to the upper part of the inclined end surface 64a of the valve pipe 64 by a hinge 26 or the like. The size of the valve body 28 is larger than the inner diameter of the inclined end face 64a, and the valve body 28 closes the inclined end face 64a so as to be freely opened and closed. A rubber packing 24 or the like is attached to the valve body 28.

  When this check valve 10 is installed in the existing installation 12, as shown in FIG. 23, the bottom of the connecting pipe 62 is aligned with the bottom of the outflow pipe 34 while the outer surface of the saddle 16 is aligned with the inner surface of the outlet 12. Then, the outer surface of the saddle 16 is bonded to the inner surface of the twelve with the water stop material 20.

  When the check valve 10 is installed in the main body 12 and the wastewater flows from the top 12 to the outflow pipe 34, the wastewater flows into the valve pipe 64, pushes the valve body 28 open, and flows out into the outflow pipe 34. On the other hand, when the drainage flows backward from the outflow pipe 34 toward the 12th side, the drainage flows into the connection pipe 62, and the valve element 28 closes the inclined end face 64a of the valve pipe 64. This prevents the drainage from flowing into the house more and more into the house.

  As in the case of the check valve 10 shown in FIG. 1, the expanded stainless steel band 40 shown in FIG. 6, the U-shaped jig 44 shown in FIG. 7, the presser 47 shown in FIG. The check valve 10 can be secured to the mass 12 using the presser 100 shown.

  Further, as shown in FIG. 18, the valve pipe 61 can be integrally formed with the invert 59.

  The embodiment of the present invention shown in FIG. 24 has a function of preventing the backflow of drainage and includes a main body 65.

  The main body 65 is made of a resin such as polypropylene or vinyl chloride. The side wall of the main body 65 is open at the top, and at least two holes 66 and 68 are formed in the side wall.

An outflow pipe connection receiving port 67 is provided in one hole 66 on the side wall of the main body 65, and a valve pipe 70 and an inflow pipe connection receiving port 71 are provided in the other one hole 68. The valve pipe 70 projects to the inner surface side of the main body 65, the inflow pipe connection receiving port 71 projects to the outer surface side of the main body 65, and the valve pipe 70 and the inflow pipe connection receiving port 71 are continuous. The height of the bottom of the valve pipe 70 is higher than the height of the bottom of the inflow pipe connection receiving port 71, and the difference between these heights corresponds to the thickness of the inflow pipe 14. For this reason, when the inflow pipe 14 is inserted into the inflow pipe connection receiving port 71, the bottom of the valve pipe 70 and the bottom of the inflow pipe 14 coincide.

  The valve pipe 70 is integrally formed with the side wall of the main body 65 by injection molding or secondary processing. The front end of the valve pipe 70 coincides with the hole 68, and the inner surface of the valve pipe 70 communicates with the hole 68. The rear end of the valve pipe 70 is formed on the inner surface side of the main body 65, and the end surface 70a is inclined obliquely upward.

  The valve body 28 is attached to the upper part of the inclined end surface 70a of the valve pipe 70 by a hinge 26 or the like. The size of the valve body 28 is larger than the inner diameter of the inclined end surface 70a, and the valve body 28 closes the inclined end surface 70a so as to be freely opened and closed. A rubber packing 24 or the like is attached to the valve body 28.

  An invert 38 is formed on the bottom of the main body 65. The invert 38 has a shape obtained by cutting a circular cross section of a cylindrical tube in half, and one end thereof is connected to the outlet pipe 34 connection port, and the other end is connected to the valve pipe 70.

  A check valve 10 according to another embodiment of the present invention shown in FIGS. 25 (A) and 25 (B) has a valve pipe 72. The outer diameter of the valve pipe 72 is substantially equal to or smaller than the inner diameter of the outflow pipe 34, and the end surface 72a at the rear end of the valve pipe 72 is inclined. The valve body 28 is attached to the upper part of the inclined end surface 72a of the valve pipe 72 by a hinge 26 or the like, and the valve body 28 closes the inclined end surface 72a so as to be freely opened and closed.

  When the check valve 10 is attached to the main body 12, the presser 47 and the stop are used. The stopper is, for example, a half-cracked ring 74. The half-cracked ring 74 has a shape obtained by cutting a ring-shaped plate in half, and its inner diameter is substantially equal to the inner diameter of the valve pipe 72. The valve pipe 72 is inserted into the outflow pipe 34, and the half crack ring 74 is brought into contact with the upper end surface of the pipe wall of the valve pipe 72 so that the inner circumference of the half crack ring 74 substantially coincides with the inner circumference of the valve pipe 72. Then, one end of the support bar 48 of the presser 47 is applied to the half crack ring 74, and the contact plate 49 a at the other end of the support bar 48 is applied to a position facing the half crack ring 74 on the inner surface of 12. 74 is fixed to 12.

  In this way, when the half crack ring 74 is applied to the end face of the pipe wall of the valve pipe 72 and the half crack ring 74 is fixed to 12, the force directed toward the 12 side from the outflow pipe 34 due to the backflow drainage is increased. The check valve 10 inserted into the outflow pipe 34 hits the half-breaking ring 74 and does not come out from the outflow pipe 34 even further.

  25A and 25B were fixed with the presser 47, instead, the expanded stainless steel band 40 shown in FIG. 6 and the U-shaped jig shown in FIG. It is also possible to fix the half-break ring 74 to the twelve using the holding tool 47 shown in the tool 44, FIG. 12, FIG. 13 (A), or FIG. 14 (A). Further, the half-breaking ring 74 can be directly fixed to the trough 12 by the water stop material 20 or the anchor without using the presser 47.

  A check valve 10 according to still another embodiment of the present invention shown in FIG. 26 has a saddle 112 and a valve body 114 attached to the saddle 112.

  The saddle 112 is formed using vinyl chloride, steel, hard rubber, or the like. The saddle 112 has an outer surface that is shaped along the inner surface of 116, and the water blocking material 20 is attached on the outer surface. A notch 118 is provided below the saddle 112, and the notch 118 is formed in an arc shape. At the edge of the saddle 112 along the notch 118, the corner on the inner surface side of the saddle 112 is cut off to form the cutout portion 120.

The valve body 114 is disk-shaped and has a shape along the pipe end of the inflow pipe 14. The diameter of the valve body 114 is the inflow pipe 14.
Is set larger than the inner diameter. A water stop material 24 is attached to the inner surface of the valve body 114. The thickness obtained by adding the thickness of the valve body 114 and the thickness of the water blocking material 24 is set to be the same as or substantially the same as the thickness obtained by adding the thickness of the saddle 112 and the thickness of the water blocking material 20. The valve body 114 is fitted into the notch 118 of the saddle 112 and attached to the saddle 112 while being suspended by the hinge 26 or the like. The joint portion 26a of the hinge 26 is aligned with the cutout portion 120 of the saddle 112, whereby the valve body 114 closes the opening of the inflow pipe 14 so as to be opened and closed.

  When the check valve 10 is installed in the rectangular existing pipe 116, the valve body 114 is aligned with the opening of the inflow pipe 14, and the outer surface of the saddle 112 is aligned with the inner face of the pipe 116. 112 is bonded to the inner surface of 116. Accordingly, the check valve 10 is attached to the inner surface of the 116.

  The valve body 114 hangs down from the attached saddle 112, and the water stop material 24 is attached to the pipe end of the inflow pipe 14 to block the opening of the inflow pipe 14. When drainage flows from the inflow side, the valve body 114 is opened by the water pressure of the drainage, and the drainage flows to the outflow side. Thus, since the valve body 114 blocks the inflow pipe 14 except when the wastewater flows in, the bad smell of the wastewater is prevented from entering the house through the inflow pipe 14.

  Further, when the drainage flows backward, the valve body 114 is pressed against the pipe end of the inflow pipe 14 by the water pressure of the drainage and closes the opening. For this reason, it is prevented that waste water flows into the inflow pipe 14 and the house in front of the inflow pipe 14.

  Further, since the check valve 10 is provided inside the first 116, the check valve 10 can be visually inspected from the upper part of the first 116 or the like. Moreover, when the valve body 114 is opened, the inside of the inflow pipe 14 can be visually inspected.

  In addition, the check valve 10 does not have a valve pipe or the like protruding inside 116, and the valve body 114 and the saddle 112 are attached to the inner surface of the 116. Can be taken.

  It should be noted that the non-return is performed using the enlarged band 40 shown in FIG. 6, the U-shaped jig 44 shown in FIG. 7, the presser 47 shown in FIGS. 8 to 14, or the presser 100 shown in FIG. It is also possible to fix the valve 10 in the interior 116. When the presser 47 is used, as shown in FIG. 27, the latch receiving portion 50 is provided in the saddle 112 shown in FIG. 26, and the presser 47 is locked to the latch receiver 50. As a result, the presser 47 is attached to the inner surface of the saddle 112 outside the opening of the inflow pipe 14, and presses the saddle 112 against 116, so that the check valve 10 is firmly and easily fixed to 116.

  Further, in FIGS. 26 and 27, the check valve 10 is attached to the rectangular existing slab 116, but the check valve 10 may be attached to a circular existing slat.

  Further, in FIG. 26 and FIG. 27, the check valve 10 is attached to the inflow pipe 14 side of the further 116, but it can also be attached to the outflow pipe 34 side of the more 116. In this case, a vertically long elliptical valve body is used, the valve body is put in the outflow pipe 34, and the outer surface of the saddle 112 is attached to the inner surface of the 116. Accordingly, the valve body opens the opening of the outflow pipe 34 for the drainage flowing to the outflow side, and conversely, the valve body closes the opening of the outflow pipe 34 for the drainage flowing back to the inflow side. Has a backflow prevention effect.

Moreover, the valve body 114 can also be directly attached. That is, a main body having a side wall with an upper opening is used more and holes are formed on the inflow side and the outflow side of the side wall. Then, the inner corner is cut off at the edge of the side wall surrounding the inflow side hole or the outflow side hole to form the cutout portion 120. Then, the hinge 26 is attached to the inner surface of the side wall and the valve body 114 with the joint portion 26 a aligned with the cutout portion 120. The valve body 114 has a hole that can be freely opened and closed by the hinge 26, and has a backflow prevention mechanism.

  In addition, the same number is attached | subjected about the part which is more common like the Example shown in FIG. 1, and description is abbreviate | omitted.

  In all the above embodiments, the end surfaces 22a, 64a, and 70a at the rear ends of the valve tubes 22, 64, 70, and 72 are inclined, but the end surfaces 22a, 64a, 70a, and 72a are connected to the valve tubes 22, 64, and 70, respectively. , 72 perpendicular to the tube axis.

  Further, in all of the above embodiments except the embodiment of FIG. 24, the check valve 10 is mounted in the existing concrete wall 12, but the check valve 10 is mounted in the existing resin resin such as polypropylene or vinyl chloride. You can also.

  In all the above-described embodiments, 12, 65 are used as the drainage facilities, but other drainage facilities such as manholes can also be used.

  Furthermore, the specific numerical values of the angles and dimensions mentioned above are merely examples, and can be appropriately changed as necessary.

DESCRIPTION OF SYMBOLS 10 ... Check valve 12, 65, 116 ... Mas 14 ... Inflow pipe 16, 112 ... Saddle 19 ... Hole 22, 64, 70, 72 ... Valve pipe 28, 114 ... Valve body 34 ... Outflow pipe 38 ... Invert 40 ... Expansion Diameter stainless steel band 44 ... U-shaped jig 46 ... Anchor bolt 47, 100 ... Presser

The invention of claim 1 is provided in a drainage facility in which an inflow pipe and an outflow pipe are connected to a side wall having a curved inner surface or a side wall having a flat inner surface, and an invert is provided at the bottom to connect the inflow pipe and the outflow pipe. An attachable check valve that is provided so as to continuously protrude from the inner surface of the side wall continuously with the inflow pipe, a valve body that opens and closes an end surface of the valve pipe opposite to the side wall, and one end Is a check valve provided with a presser that is attached to the check valve and that fixes the check valve by abutting the other end against the inner surface of the side wall .

According to a second aspect of the present invention, there is provided a drainage facility in which an inflow pipe and an outflow pipe are connected to a side wall having a curved inner surface or a side wall having a flat inner surface, and an invert is provided at the bottom to connect the inflow pipe and the outflow pipe. A check valve that can be attached, and that opens and closes the opening of the inflow pipe, and one end is attached to the check valve, and the other end contacts the inner surface of the side wall to fix the check valve. A check valve including a presser .

According to a third aspect of the present invention, there is provided a drainage facility in which an inflow pipe and an outflow pipe are connected to a side wall having a curved inner surface or a side wall having a flat inner surface, and an invert is provided at the bottom to connect the inflow pipe and the outflow pipe. A check valve that can be attached, and is provided so as to protrude from the inner surface of the side wall continuously with the outflow pipe, a valve pipe provided in the connection pipe with one end being continuous with the connection pipe, and a valve A check valve comprising: a valve body for closing the end face of the other end of the pipe so that it can be opened and closed; and a presser that is attached to the check valve and that fixes the check valve by abutting the other end against the inner surface of the side wall. It is.

According to a fourth aspect of the present invention, the presser is attached to the check valve so as to be displaceable between a first state extending in the vertical direction and a second state extending in the horizontal direction. Check valve .

A fifth aspect of the present invention is a drainage facility using the check valve according to any one of the first to fourth aspects, wherein the check valve is disposed corresponding to one of the positions of the inflow pipe and the outflow pipe. It is a drainage facility that is fixed with a pusher .

According to the present invention, it is possible to mount the check valve easy to existing drainage facilities. Further, possible return valve visual inspection etc. the upper opening of the drainage facility. Since the valve body normally closes the inclined end face of the valve pipe, drainage and bad odor do not flow into the house.

Claims (10)

A check valve installed in a drainage facility to which an inflow pipe and an outflow pipe are connected,
A saddle whose outer surface is along the inner surface of the drainage facility;
A check valve comprising: a valve pipe formed on the inner surface side of the saddle; and a valve body that closes an end face of a rear end of the valve pipe so as to be freely opened and closed.   The check valve according to claim 1, further comprising a presser that presses the saddle against an inner surface of the drainage facility.   The check valve according to claim 1, further comprising an invert formed integrally with the valve pipe. A drainage facility using the check valve according to claim 1,
A main body, and an inflow pipe and an outflow pipe connected to the main body,
Corresponding to the position of the inflow pipe, the saddle along the inner surface of the drainage facility,
A drainage facility comprising a presser for fixing the saddle to the inner surface of the drainage facility. A body having a sidewall with a top opening;
Holes formed in the side walls on the inflow side and the outflow side,
A drainage facility comprising: a valve pipe formed integrally with the side wall and having an inner surface communicating with the inflow side hole; and a valve body for closing and closing a rear end face of the valve pipe. A check valve installed in a drainage facility to which an inflow pipe and an outflow pipe are connected,
A saddle whose outer surface is along the inner surface of the drainage facility;
A connecting pipe formed on the inner surface side of the saddle,
A check valve, comprising: a valve pipe having a front end continuous with the connection pipe and provided in the connection pipe; and a valve body that opens and closes an end surface of a rear end of the valve pipe. Body,
An inflow pipe and an outflow pipe connected to the main body,
A valve pipe having an outer diameter equal to or smaller than the inner diameter of the outflow pipe,
A drainage facility comprising: a valve body that covers an end surface of a rear end of the valve pipe so as to be freely opened and closed; and a stopper that is fixed to the main body and presses an end face of a pipe wall of the valve pipe. A check valve installed in a drainage facility to which an inflow pipe and an outflow pipe are connected,
A check valve, comprising: a saddle whose outer surface is along the inner surface of the drainage facility; and a valve body that freely opens and closes one of the inlet pipe and the outlet pipe.   The check valve according to claim 8, further comprising a presser that presses the saddle against an inner surface of a drainage facility. A body having a sidewall with a top opening;
A drainage facility comprising a hole formed in the side wall on the inflow side and the outflow side, and a valve body for closing the hole so as to be opened and closed.

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