JP2020180707A - Valve body unit, exhaust valve device, device for fixing exhaust valve to lid body, and structure for fixing exhaust valve to lid body - Google Patents

Abstract

To provide an exhaust valve device which can be installed to a lid body without preparing a special lid body.SOLUTION: An exhaust valve device comprises: a valve body unit 10; and a unit fixing member 30 for fixing the valve body unit 10 to a through hole of a lid body 50 which closes an upper opening of a standing pipe 58 connected to a drain duct line. The unit fixing member 30 includes: an outer covering cylindrical body 31 which is inserted into the through hole and in which the valve body unit 10 may be arranged; an engagement part which protrudes outward from one end of the outer covering cylindrical body 31 and is engaged with a peripheral edge of the through hole of the lid body 50; and a fixed part which is fixed to the through hole of the lid body 50 at an attitude set when the unit fixing member 30 is engaged at the engagement part. The fixed part includes a fixed nut 41 which is threadedly engaged with a screw part 34, formed at the outer covering cylindrical body 31, at the lower surface side of the lid body 50 to sandwich the lid body 50 with the engagement part.SELECTED DRAWING: Figure 5

Description

According to the present invention, a valve body unit, an exhaust valve device, an exhaust valve fixing device to the lid, and an exhaust valve fixing to the lid are installed on a lid that closes an upper opening of a rising pipe connected to a drain pipe of a drainage facility. It is about the structure.

Drainage facilities such as wash basins and kitchens are equipped with drain traps to prevent the backflow of bad odors from sewage and the invasion of pests. In FIG. 11, a drainage mass 63 is provided in the middle of the drainage pipe line 62 leading to the outdoor drainage main 61, and a drainage trap 65 is provided in the indoor drainage facility 64 and the outdoor drainage mass 63. If the pressure in the drainage pipe 62 between the drainage traps 65 rises for some reason, it becomes difficult for the drainage to flow. Therefore, a pressure release cap 66 is provided at the upper end of the drainage mass 63, or a rising pipe connected to the drainage pipe 61 is separately provided. A pressure release cap is provided at the upper end of the drainage pipe line 62 to allow air in the drainage pipe line 62 to escape and prevent the pressure from rising. In Patent Document 1 and Patent Document 2, a pressure release cap is attached to a lid provided at the upper end of the rising pipe including the drainage mass 63 to release the air in the drainage pipe line 62 to the outside to prevent the pressure from rising. The technology is disclosed.

The exhaust valve, which is the pressure release cap of Patent Document 1, has the same configuration as the valve body unit 10 shown in FIG. 8 of the present invention, and will be described using the reference numerals of FIG. 8 of the present invention. The first fixing portion 24 fixed to the first through hole 52 of the lid 50 that closes the upper opening of the lid 50, the ventilation passage 12 that communicates the front and back surfaces of the lid 50 through the first through hole 52, and the valve body 14 And a cover portion 22. The valve body 14 closes the ventilation passage 12 above the upper surface 51, which is the front surface of the lid 50, and opens the ventilation passage 12 by receiving an increased pressure from the drainage pipe passage. The covering portion 22 covers the upper surface side of the valve body 14 on the front side of the lid body 50.

Further, the pressure release lid described in Patent Document 2 has a lid provided with a through hole penetrating in the vertical direction, a lower limit position for closing the through hole, and an upper limit position for floating from the lid and opening the through hole. It is provided with a movable opening / closing lid that can move in the vertical direction between the, and a guide portion that regulates the moving direction in the vertical direction. When the pressure in the drainage pipe becomes high, the pressure release lid applies pressure to the lower surface of the movable opening / closing lid, and as a result of pushing up the movable opening / closing lid, the pressure in the drainage pipe is released.

JP-A-2015-169214 Japanese Unexamined Patent Publication No. 2012-172322

However, in the exhaust valve described in Patent Document 1, since the cover portion 22 projects upward from the upper surface 51 of the lid body 50, the cover portion 22 may trip over the cover portion 22 during walking, or the cover portion 22 may appear as the lid 50. I was worried about jumping up from.

On the other hand, the movable opening / closing lid as the pressure release cap attached to the pressure release lid described in Patent Document 2 has the uppermost surface installed at the same height as the upper surface of the lid body and does not protrude upward from the lid body. Therefore, such a problem does not occur.

However, the movable opening / closing lid of Patent Document 2 is formed in an inverted truncated cone shape, and the side surface is formed on an inclined surface, and the inner peripheral surface of the through hole provided in the lid corresponding to this is formed on the lower side. It is formed on a tapered inclined surface whose opening area becomes smaller. For this reason, when a movable opening / closing lid is retrofitted to an existing lid, it is not possible to provide a through hole with a tapered inner peripheral surface in the existing lid using a cutting tool such as a drill. When attaching the movable opening / closing lid, prepare a dedicated lid that corresponds to the movable opening / closing lid, remove the existing lid once, replace it with a dedicated lid that corresponds to the movable opening / closing lid, and then move to this lid. It was necessary to attach an open / close lid. For this reason, it is troublesome to replace the lid, waste is generated in the lid, and the cost of parts is increased.

Therefore, the present invention is mainly installed on an existing lid body, and can be installed without preparing a dedicated lid body, a valve body unit, an exhaust valve device, and an exhaust valve fixing device to the lid body. An object of the present invention is to provide an exhaust valve fixing structure to the lid body.

The valve body unit according to claim 1 is
A tubular body with a ventilation path inside, which is inserted into a through hole formed in the lid that closes the upper opening of the rising pipe that connects to the drainage pipe.
A hooking portion that projects outward from the outer surface of the tubular body and is hooked on the peripheral edge of the through hole on the upper surface of the lid body.
The fixing nut is provided at a position below the lower surface of the lid in a posture of being hooked by the hook, and the fixing nut is provided on the lower surface side of the lid so as to sandwich the lid together with the hook with the fixing nut. And the screw part to which is screwed
A valve body that closes the ventilation passage and opens the ventilation passage by receiving an increased pressure from the drainage pipe passage.
It is provided with a covering portion that covers the upper surface side of the valve body and is provided with an exhaust port for communicating the ventilation path to the outside on the side.

The exhaust valve device of claim 2 is
An exhaust valve device comprising a valve body unit and a unit fixing member for fixing the valve body unit to a through hole formed in a lid body that closes an upper opening of a rising pipe connected to a drainage pipe.
The unit fixing member is
An exterior tubular body that is formed in a hollow tubular shape, is inserted into the through hole, and the valve body unit can be arranged inside.
A hooking portion that projects outward from one end of the outer cylinder and is hooked on the peripheral edge of the through hole on the upper surface of the lid.
A fixing portion fixed to the through hole of the lid body in a posture of being hooked by the hooking portion is provided.
The fixing portion has a fixing nut that is screwed to a screw portion formed on the outer cylinder on the lower surface side of the lid and holds the lid together with the hooking portion.

The exhaust valve fixing device to the lid of claim 3 is
A tubular body that is inserted into a through hole formed in the lid that closes the upper opening of the rising pipe that connects to the drainage pipe.
A hooking portion that is hooked on the peripheral edge of the through hole on the upper surface of the lid body,
A valve body that closes the air passage formed inside the tubular body and opens in response to an increased pressure from the drainage pipe.
On the lower surface side of the lid, a fixing nut that is screwed to a screw portion provided on the tubular body and holds the lid together with the hooking portion.
It is equipped with.

The exhaust valve fixing device to the lid of claim 4 is
A tubular portion inserted into a through hole formed in the lid, a valve body arranged inside the tubular portion, and a hook protruding from one end of the tubular portion and hooked on the surface side of the lid. A portion, a screw portion formed on the outer surface of the other end side of the cylinder portion, a fixing nut screwed to the screw portion on the back surface side of the lid body and sandwiching the lid body together with the hook portion, and the above. The packing inserted between the hook and the lid,
It is equipped with.

In the structure for fixing the exhaust valve to the lid of claim 5, the exhaust valve fixing device according to claim 3 or 4 is fixed by sandwiching the peripheral edge of the through hole of the lid, and the fixing nut is screwed. It can be removed from the lid by removing it by rotation.

The structure for fixing the exhaust valve to the lid according to claim 6 is
A tubular member is inserted into a through hole formed in the lid to form a ventilation path inside, and a valve body that opens and closes to close and open the ventilation path is arranged in the tubular member. A hooking portion formed by projecting from one end of the lid is hooked on the peripheral edge of the through hole on the front surface side of the lid, and the other end of the tubular member projects from the back surface of the lid.
A threaded portion is formed on the outer surface of the protruding portion of the tubular member.
A fixing nut is screwed to the threaded portion.
Packing is provided between the hook and the surface of the lid.
The lid and the packing are sandwiched between the hook and the fixing nut.
The tubular member is removably fixed to the lid body by removing the fixing nut by screw rotation.

According to the present invention, a through hole can be formed in an existing lid body by using a cutting tool such as a drill, and an exhaust valve device and a valve body installation device can be installed in the through hole. It is not necessary to separately prepare a dedicated lid body corresponding to this each time, the trouble of replacing the lid body can be saved, the waste of the lid body can be eliminated, and the component cost can be reduced.

In addition, after fixing the exhaust valve device to the through hole of the existing lid body, the fixing nut can be removed and the exhaust valve device can be removed from the lid body when the valve body needs to be cleaned. When the valve body was fixed by adhesion, it was necessary to remove the exhaust valve device together with the lid when cleaning the valve body, grasp the lid together, and clean or replace the valve body. However, according to the present invention, such trouble can be saved, and the lid body from which the exhaust valve device has been removed can be reused as it is even when the valve body or the like is replaced.

It is an exploded perspective view which shows the exhaust valve device of 1st Embodiment of this invention. It is a perspective view which shows the member of the valve body unit of FIG. The exterior cylinder of FIG. 1 is shown, (a) is a perspective view, (b) is a front view, and (c) is a cross-sectional view taken along the line AA of (b). The fixing nut of FIG. 1 is shown, (a) is a perspective view, (b) is a front view, and (c) is a cross-sectional view taken along the line BB of (b). It is sectional drawing of the exhaust valve device of 1st Embodiment of this invention. It is sectional drawing which shows the flow of the air when the valve body of FIG. 5 opens. It is an exploded perspective view which shows the valve body unit of FIG. It is sectional drawing of the valve body unit of FIG. It is sectional drawing which shows the exhaust valve device of the 2nd Embodiment of this invention. It is sectional drawing which shows the modification of the exhaust valve device of 1st Embodiment. It is the schematic which shows the drainage pipe line where the exhaust valve device of this invention is installed.

<First Embodiment>
First, the exhaust valve device and the valve body installation device according to the first embodiment of the present invention will be described with reference to FIGS. 1 to 8. In the following description, the side on which the covering portion of the valve body unit constituting the exhaust valve device is formed will be described as the upper side.

The exhaust valve device releases the air in the drainage pipe to the outside when the pressure in the drainage pipe leading to the outdoor drainage main from the drainage facility such as an indoor washbasin or kitchen rises to prevent the pressure from rising. It is installed on a lid that closes the upper opening of a rising pipe that is connected to a drainage pipe. The exhaust valve device consists of a valve body unit fixed to the first through hole formed in the lid of the upper opening of the rising pipe and a second through hole having a diameter larger than the first through hole formed in the lid. It is composed of a unit fixing member for fixing the valve body unit.

In FIGS. 1, 7 and 8, the valve body unit 10 has a tubular main body 11 having a ventilation passage 12 formed therein and inserted into the first through hole 52 of the lid body 50, and an upper surface 51 of the lid body 50. The first hooking portion 25 to be hooked on the peripheral edge 52a of the first through hole 52, the first fixing portion 24 to be fixed to the first through hole 52 of the lid 50, and the ventilation path in the tubular main body 11. A valve body 14 that closes the valve body 12 and opens and closes the ventilation path 12 by receiving an increased pressure from the drainage pipe line and a covering portion 22 that covers the upper surface side of the valve body 14 are provided.

Specifically, the tubular main body 11 is composed of a support tubular portion 16 of the valve support 13 and a tubular portion 23 of the outer member 21, which will be described later, and is formed in a hollow tubular shape as a whole by a synthetic resin. An O-ring 19 is fitted on the outer surface of the support cylinder portion 16 of the valve support body 13 and is maintained in an airtight state with the inner surface of the tubular portion 23 of the outer member 21. The first hooking portion 25 is formed in a brim shape and integrally projects outward from the upper end portion of the outer surface of the tubular portion 23 of the tubular main body 11 in the horizontal direction. The first fixing portion 24 is formed on the outer surface of the tubular portion 23 of the outer member 21, and is fixed to the first through hole 52 of the lid 50 by adhesion in a posture of being hooked by the first hooking portion 25. .. However, when the exhaust valve device 1 is installed in the second through hole 53 of the lid 50, the first fixing portion 24 is fixed to the inner surface of the outer cylinder 31 of the unit fixing member 30 by adhesion, as will be described later. Will be done.

As shown in FIG. 2A, the valve body 14 has a closing portion 14a formed in a thin circular flat plate shape and closing the entire opening of the ventilation passage 12 in the tubular main body 11 with one sheet, and a closing portion 14a on the lower surface thereof. The diameter of the shaft portion 14b protruding directly below the center of the circle and the diameter of the shaft portion 14b larger than that of the shaft portion 14b provided below the center of the circle of the closing portion 14a by the height of the erection portion 18 of the valve support 13. It is composed of the engaging protrusions 14c of the above, and is integrally formed by using a soft material such as rubber or a soft resin.

The valve body 14 is attached to and supported by the valve support 13 located below the valve body 14. The valve body 14 is provided so that the valve body unit 10 is located above the upper surface 51 of the lid 50 when the valve body unit 10 is independently fixed to the first through hole 52, as shown in FIGS. 7 and 8. There is. As shown in FIG. 2B, the valve support 13 is formed in a substantially hollow tubular shape, and a support portion 15 for supporting the valve body 14 from below is formed at the upper end portion, and a lower portion thereof is a support body. It is a cylinder portion 16. The upper end surface of the support portion 15 is a seating portion 17 on which the valve body 14 is placed and seated, and a cross-shaped erection portion 18 is erected in the upper opening of the valve support 13 at a slightly lower portion thereof. A shaft portion 14b of the valve body 14 is inserted into the base portion 18a of the circular center portion where the portions 18 intersect, and a support hole 18b for supporting the valve body 14 is formed.

The valve body 14 is fitted into the support portion 15 while being elastically deformed by forcibly pushing the shaft portion 14b into the support hole 18b of the erection portion 18 of the valve support body 13, and is detachably attached to the support portion 15. In the valve body 14, as shown in FIG. 2C, the lower surface of the closing portion 14a is uniformly placed on the seating portion 17 of the valve support 13, and the air passage 12 is sealed at the upper end opening of the valve support 13. Stop.

The support cylinder portion 16 of the valve support 13 is formed with hook-shaped locking projections 16a that slightly project outward at two locations on opposite sides of the lower peripheral wall. The locking projection 16a is locked in a locking recess 23a formed of a concave groove having a predetermined length formed at the lower end of the inner wall of the tubular portion 23 of the outer member 21. A vertical slit 16c reaching the lower end is formed on both the left and right sides of the peripheral wall below the support cylinder portion 16 with the locking projection 16a interposed therebetween, and an elastic piece 16b is formed between the pair of slits 16c and 16c. Has been done. The valve support 13 inserts the valve support 13 into the tubular portion 23 of the outer member 21 from below with the O-ring 19 fitted while elastically deforming the elastic piece 16b in the inward and outward directions, and the locking projection 16a By locking the locking recess 23a and the locking recess 23a, the outer member 21 is attached to the outside and integrated.

As shown in FIG. 2D, the outer member 21 is formed in a shape in which the entire body is tubular and the opening at one end is closed, and the outer member 21 is formed on the upper side where the opening at one end is closed and is formed on the upper surface side of the valve body 14. The covering portion 22 covering the above, the tubular portion 23 formed on the lower side, and the first hooking portion 25 protruding outward from the outer surface of the tubular main body 11 are integrally formed.

Here, the covering portion 22 is formed by a top wall 22a formed in a substantially disk shape and an annular side wall 22b formed below the top wall 22a and forming a side surface of the covering portion 22. The top wall 22a covers the entire closed portion 14a of the valve body 14 from above. The side wall 22b is provided with exhaust ports 22c for communicating the ventilation passages 12 to the outside at four locations at equal intervals in the circumferential direction. In a state where the valve support 13 and the outer member 21 are integrated, the top wall 22a of the covering portion 22 is arranged above the valve body 14 at a predetermined distance. As a result, when the valve body 14 is opened, the ventilation passage 12 in the tubular main body 11 is in a state of communicating with the outside through the opening of the valve body 14 through the exhaust port 22c of the covering portion 22.

The first hooking portion 25 of the outer member 21 is formed in an annular protrusion shape and covers the outer surface of the tubular main body 11, more specifically, the outer surface of the tubular portion 23 of the outer member 21 of the tubular main body 11. It projects outward from the lower portion adjacent to the exhaust port 22c of 22. Therefore, the valve body 14 is located above the first hooking portion 25 as described above. When the valve body unit 10 is independently installed on the lid body 50, the first hooking portion 25 is hooked on the peripheral edge 52a of the first through hole 52 on the upper surface 51 of the lid body 50, and the valve body unit 10 Is installed in the second through hole 53 of the lid 50 using the unit fixing member 30, and is hooked on the stepped portion 35 formed on the inner surface of the outer cylinder 31 of the unit fixing member 30, which will be described later. To. The first hooking portion 25 also serves as a hooking portion 26 that is hooked and hooked on the stepped portion 35.

Locking recesses 23a are formed at two locations on the lower end side of the tubular portion 23 of the outer member 21, and the valve support 13 and the outer member 21 are integrated by locking the valve support 13 with the locking projection 16a. The valve body unit 10 is configured.

On the other hand, as shown in FIGS. 1 and 5, the unit fixing member 30 for fixing the valve body unit 10 to the second through hole 53 of the lid 50 has a hollow tubular shape in which the inside communicates from one end to the other end. The formed outer cylinder 31, the second hook 32 protruding outward from one end of the outer cylinder 31, and the second fixing portion 33 fixed to the second through hole 53 of the lid 50. I have. As shown in FIG. 3, the outer cylinder 31 is fixed to the second through hole 53 of the lid 50 together with the valve body unit 10 by tightening the fixing nut 41 described later to the screw portion 34 formed on the outer surface thereof. You can do it.

Specifically, the outer cylinder 31 is made of synthetic resin, and as shown in FIGS. 3 and 5, a step portion 35 whose inner surface is separated from the upper end by a predetermined distance downward from the upper end and the lower portion thereof is reduced in diameter. Is formed in a ring shape. A hooking portion 26, which is also a first hooking portion 25 of the valve body unit 10, can be hooked on the stepped portion 35. On the outer surface of the outer cylinder 31, the portion above the step portion 35 is formed to have an outer diameter substantially the same as the inner diameter of the second through hole 53 of the lid 50, and is below the step portion 35 on the inner surface of the outer cylinder 31. The side portion is formed to have substantially the same inner diameter as the outer surface of the tubular portion 23 of the outer member 21 of the valve body unit 10. The outer cylinder 31 formed in this way is inserted into the second through hole 53 of the lid 50, and the valve body unit 10 is arranged inside so that the outer cylinder 31 can be accommodated. Then, in the state where the valve body unit 10 is arranged and housed inside, as shown in FIGS. 5 and 6, the portion above the step portion 35 on the inner surface of the outer cylinder 31 and the covering portion 22 of the valve body unit 10 A gap S is formed between the side wall 22b and the side wall S, and air can flow through the gap S. The outer cylinder 31 may be formed of a metal material or the like.

The second hooking portion 32 is formed in the shape of an annular plate, projects horizontally outward from the upper end which is one end of the outer cylinder 31, and extends to the peripheral edge 53a of the second through hole 53 on the upper surface 51 of the lid 50. It can be stopped from above. The upper surface of the second hooking portion 32 is formed on a gently inclined surface, and the lower surface is formed on a horizontal surface so as to be in uniform surface contact with the upper surface 51 of the lid 50.

A screw portion 34 made of a male screw is provided on the outer surface of the outer cylinder 31 below a substantially intermediate position in the height direction, and the screw portion 34 of the outer cylinder 31 constitutes a second fixing portion 33. ing. The exhaust valve device 1 is fixed to the lid 50 by tightening the fixing nut 41 to the screw portion 34 in a posture in which the second hook 32 is hooked to the peripheral edge 53a of the second through hole 53 of the lid 50. Can be done.

The fixing nut 41 is formed of a synthetic resin in a hollow tubular shape, and as shown in FIGS. 4 and 5, an annular contact portion 43 is formed so as to laterally project from the peripheral edge of the upper end opening 42. .. The contact portion 43 comes into contact with the lower surface 54 of the lid 50 when the exhaust valve device 1 is fixed to the second through hole 53 of the lid 50. On the outer surface of the fixing nut 41, a plurality of small ridges 44 in the vertical direction for easy gripping, and in this embodiment, six small ridges 44 project at equal intervals in the circumferential direction over the entire length from the contact portion 43 to the lower end. It is installed. A female screw portion 45 is formed on the inner surface of the fixing nut 41 so that the screw portion 34 of the outer cylinder 31 can be screwed and rotated. The female screw portion 45 is formed on the inner surface of the fixing nut 41 below a substantially intermediate position in the height direction. As a result, when tightening to the screw portion 34 on the outer surface of the outer cylinder 31, the fixing nut 41 is first moved straight in the direction of the central axis, externally inserted to the middle portion of the outer cylinder 31, and then screw rotation is started and tightened. Since it is sufficient, the fixing nut 41 can be attached with good workability. The fixing nut 41 may be formed of a metal material or the like.

The fixing nut 41 also constitutes the second fixing portion 33 together with the screw portion 34, and also constitutes the unit fixing member 30 together with the outer cylinder 31. Further, the fixing nut 41 can be broadly regarded as forming a part of the outer cylinder 31.

The valve body unit 10 and the unit fixing member 30 are assembled by adhering the first fixing portion 24 on the outer surface of the tubular portion 23 of the valve body unit 10 and the inner surface of the outer tubular body 31 of the unit fixing member 30. The exhaust valve device 1 is configured by being fixed and integrated.

Here, the lid body 50 on which the valve body unit 10 or the exhaust valve device 1 is installed is made of a synthetic resin material or the like, and as shown in FIGS. 1, 5 to 10, the upper side is formed in a substantially disk shape. The upper surface 51 is formed on a flat surface. The lid 50 has a peripheral end portion 55 whose side surface is formed on an inclined surface and is placed on a receiving frame 57 provided on the outer peripheral side thereof. The receiving frame 57 is a cylindrical rising pipe 58 such as a straight pipe or an exhaust mass. It is fixed to the upper end of the lid by adhesion or the like. As a result, the lid 50 is detachably attached to the upper opening of the rising pipe 58.

Next, installation of the valve body unit 10 or the exhaust valve device 1 configured as described above on the lid body 50 will be described.
When the valve body unit 10 is independently installed in the first through hole 52 of the lid body 50, after forming the first through hole 52 in the lid body 50 using a cutting tool such as a drill, the valve body unit 10 An adhesive is applied to the outer surface of the tubular main body 11 which is the first fixing portion 24 or the inner surface of the first through hole 52 of the lid 50, and the valve body unit 10 is placed in the first through hole 52 of the lid 50 from above. It can be inserted and installed. After installation, as shown in FIG. 8, the lower surface of the first hooking portion 25 hooks on the peripheral edge 52a of the first through hole 52 on the upper surface 51 of the lid 50, and the first fixing portion 24 of the valve body unit 10 And the inner surface of the first through hole 52 of the lid 50 are adhered and fixed.

On the other hand, when the exhaust valve device 1 is installed in the second through hole 53 of the lid 50, a cutting tool such as a drill is used to provide the lid 50 with a second through hole 53 having a diameter larger than that of the first through hole 52. After the formation, the first fixing portion 24 of the valve body unit 10 and the inner surface of the outer cylinder 31 of the unit fixing member 30 are adhered with an adhesive to assemble the exhaust valve device 1, and this is attached to the lid 50 from above. 2 Insert into the through hole 53. At this time, it is desirable to attach a surface packing 36 made of an annular flat plate-shaped rubber, a soft synthetic resin, or the like to the peripheral edge 53a of the second through hole 53 on the upper surface 51 of the lid 50. Next, the fixing nut 41 is screwed and tightened from the lower surface 54 side of the lid 50 to the screw portion 34 of the outer cylinder portion of the unit fixing member 30, and the contact portion 43 of the fixing nut 41 is attached to the lower surface 54 of the lid 50. The front and back surfaces of the lid 50 are sandwiched between the second hook 32 and the fixing nut 41 so as to be in contact with each other. As a result, the exhaust valve device 1 is installed in the second through hole 53 of the lid body 50. At this time, if a surface packing 36 is inserted between the peripheral edge 53a of the second through hole 53 and the second hooking portion 32 on the upper surface 51 of the lid 50, the airtightness of this portion is ensured and rainwater It is possible to reliably prevent water or dust such as water from entering the back surface side of the lid 50. When the valve body unit 10 described above is attached to the first through hole 52 of the lid 50, the surface packing 36 is not particularly required because the airtightness is ensured by adhesion at the first fixing portion 24.

In a state where the exhaust valve device 1 is fixed to the second through hole 53 of the lid body 50, as shown in FIG. 5, the hooking portion 26, which is also the first hooking portion 25 of the valve body unit 10, is a valve body. When the unit 10 is independently fixed to the first through hole 52 of the lid 50, it is hooked on the peripheral edge 52a of the first through hole 52 on the upper surface 51 of the lid 50, whereas the unit fixing member 30 It is hooked and stopped by the stepped portion 35 on the inner surface of the outer cylinder 31. That is, the stepped portion 35 of the outer cylinder 31 is located below the upper surface 51 of the lid 50 by a predetermined distance below the upper end opening of the outer cylinder 31. Therefore, the upper surface of the covering portion 22 is located below the upper surface of the covering portion 22 when the valve body unit 10 is independently fixed to the first through hole 52 of the lid body 50, and the position of the step portion 35 is appropriately set. By doing so, it can be positioned at the same height as the uppermost surface of the second hooking portion 32 or at an arbitrary height below this.

Next, in the exhaust valve device 1 installed on the lid 50 in this way, when the pressure in the drainage pipe line between the drainage traps rises for some reason will be described. When the pressure in the drainage pipe line rises. , The pressure in the ventilation passage 12 of the exhaust valve device 1 also increases. Then, as shown in FIG. 6, the closed portion 14a of the valve body 14 elastically bends and deforms upward with the base portion 18a as an axis to perform an opening operation. Along with this, the air in the ventilation passage 12 of the exhaust valve device 1 rises through the opening of the valve body 14 as shown by an arrow, and then passes through the exhaust port 22c of the side wall 22b of the covering portion 22 to form an outer cylinder. It flows through the gap S between the upper part of the inner surface of the body 31 and the side wall 22b of the covering portion 22, rises, and is released into the atmosphere. As a result, the pressure rise in the drainage pipe line is prevented.

Here, the valve body installation device 2 is an exhaust valve device 1 excluding the valve body 14, and is a different expression of the invention of the present embodiment as a device for installing the valve body 14 on the lid body 50. Is. Therefore, the valve body installation device 2 has substantially the same configuration as the exhaust valve device 1, and operates in the same manner as the exhaust valve device 1. The "cylinder portion" of the valve body installation device according to the claim corresponds to the tubular main body 11 and the outer tubular body 31 of the exhaust valve device 1.

Next, the operation of the exhaust valve device 1 of the present embodiment will be described.
When the exhaust valve device 1 is fixed to the second through hole 53 of the lid 50, the upper surface of the covering portion 22 of the valve body unit 10 is fixed to the first through hole 52 of the lid 50. It is located below the upper surface of the cover portion 22 at the time. As a result, it is possible to prevent the covering portion 22 from protruding significantly from the upper surface 51 of the lid 50 while the exhaust valve device 1 is installed in the through hole of the lid 50.

Here, the amount and height of the covering portion 22 protruding from the upper surface 51 of the lid 50 are such that the position where the step portion 35 is formed on the inner surface of the outer cylinder 31 of the unit fixing member 30 is the upper end of the outer cylinder 31. It changes according to the distance from the opening downward. Therefore, the protruding height of the upper surface of the covering portion 22, which is the uppermost portion of the valve body unit 10, can be arbitrarily set by appropriately setting the position of the step portion 35. Depending on the set position of the step portion 35, the upper surface of the covering portion 22 may be located above the uppermost surface of the second hooking portion 32, but in any case, the valve body unit 10 alone covers the lid. It is located below the upper surface of the covering portion 22 when it is fixed to the first through hole 52 of the body 50.

As a result, problems such as tripping over the covering portion 22 of the valve body unit 10 during walking and being worried that the valve body unit 10 is apparently protruding from the lid 50 are solved.

Further, a cutting tool such as a drill can be used to form a through hole in the existing lid 50, and the exhaust valve device 1 can be installed in the through hole. Therefore, it is not necessary to separately prepare a dedicated lid 50 corresponding to the exhaust valve device 1 each time the exhaust valve device 1 is installed, so that the trouble of replacing the lid 50 can be saved and the waste of the lid 50 can be saved. ..

If the lid 50 is installed in a passageway so that it will not trip over when walking, or if the valve body unit 10 does not bother the lid 50 even if it protrudes from the lid 50, it already exists. A first through hole 52 may be formed in the lid body 50, and only the valve body unit 10 may be installed therein. Therefore, it is possible to appropriately select whether to use the valve body unit 10 alone or the exhaust valve device 1 provided with the unit fixing member 30.

Further, a side wall 22b is formed in the lower portion of the covering portion 22 so as to have a gap S and faces the inner surface of the outer cylinder 31, and an exhaust port 22c is formed in the side wall 22b toward the gap S. Even if the upper portion of the 10 is blocked by the covering portion 22, the air from the ventilation passage 12 of the tubular main body 11 can be surely released to the outside from the exhaust port 22c of the side wall 22b.

Since the seating portion 17 on which the valve body 14 is seated with the ventilation passage 12 closed is located above the bottom of the gap S, water such as rainwater can reach the valve body unit from the exhaust port 22c of the covering portion 22. When the water enters the inside of the gap S, the water collects at the bottom of the gap S, so that the upper surface of the valve body 14 seated on the seating portion 17 above the gap S becomes flooded with water and its weight. Therefore, it is possible to suppress a problem that the opening operation of the valve body 14 is hindered.

In addition, the exhaust valve device 1 has a fixing nut 41 having a screw portion 34 formed on the outer surface of the outer cylinder 31 and screwed to the screw portion 34 of the outer cylinder 31 on the lower surface 54 side of the lid 50. Since the lid body 50 is sandwiched and fixed by the two hooking portions 32, the exhaust valve device 1 can be removed from the lid body 50 once it is installed. To remove it, first, insert the tip of a tool such as a flat-blade screwdriver into a small groove 56 provided in advance near the peripheral edge of the upper surface 51 of the lid 50, and move the lid 50 together with the exhaust valve device 1 upward from the receiving frame 57. Then, the fixing nut 41 is removed from the outer cylinder 31, and the valve body unit 10 together with the outer cylinder 31 is removed from the lid 50. As a result, when cleaning the inside of the valve body unit 10, it is not necessary to grip and handle the lid 50 together with the lid 50 once the lid 50 is removed from the upper opening of the rising pipe 58 together with the exhaust valve device 1. The exhaust valve device 1 can be easily removed, and only the exhaust valve device 1 from which the fixing nut 41 has been removed can be gripped and handled. Therefore, since the valve body unit 10 does not have to be handled in a bulky state, it is easy to handle and easy to clean. Further, when the valve body unit 10 is replaced, the lid body 50 from which the exhaust valve device 1 has been removed can be reused as it is.

<Second Embodiment>
Next, the exhaust valve device 1 and the valve body installation device 2 of the second embodiment of the present invention will be described with reference to FIG. Compared with the exhaust valve device 1 and the valve body installation device 2 of the first embodiment, the exhaust valve device 1 and the valve body installation device 2 of the second embodiment use the unit fixing member 30 to form a lid 50. Since only the mode of the second fixing portion 33 for fixing to the two through holes 53 is different, the differences will be mainly described.

In FIG. 9, in the exhaust valve device 1, the outer cylinder 31 of the unit fixing member 30 does not have the screw portion 34 of the first embodiment, and the outer cylinder 31 has an internal portion from one end to the other end. It is formed in the shape of a hollow cylinder that communicates with each other, and a stepped portion 35 that can be hooked by the first hooking portion 25 that is the hooking portion 26 of the valve body unit 10 is formed inside, and the upper end that is one end of the exterior cylinder 31 The second hooking portion 32, which is hooked on the peripheral edge 53a of the second through hole 53 on the upper surface 51 of the lid body 50, projects outward from the outside. The second fixing portion 33, which is fixed to the second through hole 53 of the lid 50 in a posture of being hooked by the second hooking portion 32, is formed on the outer surface above the stepped portion 35 of the outer cylinder 31 and is bonded. The agent is adhered to and fixed to the inner surface of the second through hole 53 of the lid body 50. In the exhaust valve device 1 of the second embodiment, the airtightness is ensured by adhesion at the second fixing portion 33, so that the surface packing 36 used in the exhaust valve device 1 of the first embodiment is not particularly required.

Although the exhaust valve device 1 of the second embodiment cannot be removed once it is fixed to the lid 50, the second fixing portion 33 is fixed to the lid 50 by adhesion, and the outer cylinder 31 is a screw portion. The unit fixing member 30 has a small and simple structure as a whole because it is not provided with 34, the total length is shorter and more compact than the outer cylinder 31 of the first embodiment, and the fixing nut 41 is not required. It has become. The valve body unit 10 constituting one of the exhaust valve devices 1 of the second embodiment is the same as that of the first embodiment.

By the way, in the first embodiment, the outer member 21 of the valve body unit 10 and the outer cylinder 31 of the unit fixing member 30 are joined by adhesion, but the present invention is not limited to this, and as shown in FIG. In addition, the outer member 21 of the valve body unit 10 and the outer cylinder 31 of the unit fixing member 30 may be integrally formed.

Further, in each of the above embodiments, the outer member 21 of the valve body unit 10 and the outer cylinder 31 of the unit fixing member 30 are joined or integrally molded by adhesion, but the outer surface of the outer member 21 and the outer cylinder 31 are integrally molded. Screws may be formed on the inner surface of 31 and joined by screwing these screws. However, in this case, the screw provided on the outer member 21 of the valve body unit 10 is used when the valve body unit 10 is independently fixed to the first through hole 52 of the lid body 50 on the outer surface of the outer member 21. If it is provided at a position facing the inner surface of the first through hole 52, it becomes difficult to fix the valve body unit 10 and the first through hole 52 of the lid 50 by adhesion, so that the lid is formed on the outer surface of the outer member 21. It is necessary to provide it at a position below the first through hole 52 of 50. In the case of this embodiment, it is preferable to insert a seal member such as an O-ring between the outer surface of the outer member 21 and the inner surface of the outer cylinder 31.

Further, the exhaust valve device 1 of each of the above embodiments has a lid 50 by sandwiching the second hook 32 of the outer cylinder 31 and the fixing nut 41 and adhering the second fixing 33 of the outer cylinder 31. Although it is fixed to the second through hole 53 of the above, the present invention is not limited to this, and the second hooking portion 32 and the upper surface 51 of the lid 50 are fixed by screws from above, or the magnet is fixed to the second through hole 53. A means such as embedding it in the hooking portion 32 or the upper surface 51 of the lid 50 and fixing it by using magnetic force may be used, and the exhaust valve device 1 is placed in the second through hole 53 of the lid 50 by its own weight. Since it fits, the outer cylinder 31 can be installed in the second through hole 53 of the lid 50 simply by press fitting.

In addition, in the valve body 14 of each of the above embodiments, the entire opening of the ventilation path 12 in the tubular main body 11 is closed by one closing portion 14a formed in a thin circular flat plate shape, but the closing portion is closed. 14a may be formed as if a plurality of thin plates are arranged in the same plane, and each thin plate opens and closes individually. Further, the valve body 14 is formed in a thin circular flat plate shape using a soft material such as rubber or a soft resin, and elastically bends and deforms to perform an opening operation, but the valve body 14 is not limited to this, and is not limited to this. It may be accommodated and supported in the valve body unit 10 so that the whole body moves up and down and opens without bending and deforming.

Further, in the exhaust valve device 1 of the first embodiment, the surface packing 36 is used as the packing inserted between the second hook portion 32 and the upper surface 51 of the lid 50, but the O-ring or the like is used as the packing. May be used.

The exhaust valve device 1 and the valve body installation device 2 of each of the above embodiments have been described as being installed on the existing lid 50, but in the present invention, the exhaust valve device 1 and the valve body installation device 2 are The same can be applied to the case where the drainage facility is installed on the lid 50 from the beginning.

By the way, the following technical ideas can be grasped from the first embodiment.
(1) A tubular portion inserted into a through hole formed in the lid 50, a valve body 14 arranged inside the tubular portion, and a valve body 14 projecting from one end of the tubular portion to the surface side of the lid 50. The hooking portion to be hooked, the screw portion 34 formed on the outer surface on the other end side of the tubular portion, and the lid which is screwed to the screw portion 34 on the back surface side of the lid body 50 together with the hooking portion. An exhaust valve fixing device to a lid body, comprising: a fixing nut 41 for sandwiching the body 50, and a packing inserted between the hooking portion and the lid body 50.

(2) A tubular member is inserted into a through hole formed in the lid 50 to form a ventilation passage 12 inside the cylinder member, and a valve body 14 that opens and closes to close and open the ventilation passage 12 is inside the tubular member. A hooking portion that is arranged and overhangs from one end of the tubular member is hooked on the peripheral edge of the through hole on the front surface side of the lid 50, and the other end side of the tubular member projects from the back surface of the lid 50. ,
A screw portion 34 is formed on the outer surface of the protruding portion of the tubular member.
A fixing nut 41 is screwed to the screw portion 34.
Packing is provided between the hook and the surface of the lid 50.
The lid 50 and the packing are sandwiched between the hook and the fixing nut 41.
The exhaust valve fixing structure to the lid body is characterized in that the tubular member is removably fixed to the lid body 50 by removing the fixing nut 41 by screw rotation.

These technical ideas are based on the valve body 14 after fixing the exhaust valve device 1 to the second through hole 53 of the existing lid body 50 regardless of whether or not the covering portion 22 protrudes from the upper surface 51 of the lid body 50. The exhaust valve device 1 can be removed from the lid 50 by removing the fixing nut 41 of the unit fixing member 30 when necessary for cleaning or the like. Therefore, when the hooking portion and the lid 50 are adhesively fixed, when cleaning the valve body 14, the exhaust valve device 1 is removed together with the lid 50, and the lid 50 is gripped to clean the valve body 14. It is difficult to do the work of replacing or replacing, but according to these technical ideas, such trouble can be saved, and when replacing the valve body 14, etc., the exhaust valve fixing device is removed. The lid 50 can be reused as it is.

1 Exhaust valve device 30 Unit fixing member 2 Valve body installation device 31 Exterior cylinder body 10 Valve body unit 32 Second hooking part 11 Cylindrical body 33 Second fixing part 12 Vent passage 34 Screw part 13 Valve support 35 Step part 14 Valve body 36-sided packing 15 Support part 41 Fixing nut 16 Support cylinder part 50 Lid body 17 Seating part 51 Top surface 21 Outer member 52 First through hole 22 Covering part 52a Peripheral 22b Side wall 53 Second through hole 22c Exhaust port 53a Peripheral 23 Cylindrical part 54 Lower surface 24 First fixed part 58 Rising pipe 25 First hooking part S gap 26 Hooking part

Claims (6)

A tubular body with a ventilation path inside, which is inserted into a through hole formed in the lid that closes the upper opening of the rising pipe that connects to the drainage pipe.
A hooking portion that projects outward from the outer surface of the tubular body and is hooked on the peripheral edge of the through hole on the upper surface of the lid body.
The fixing nut is provided at a position below the lower surface of the lid in a posture of being hooked by the hook, and the fixing nut is provided on the lower surface side of the lid so as to sandwich the lid together with the hook with the fixing nut. And the screw part to which is screwed
A valve body that closes the ventilation passage and opens the ventilation passage by receiving an increased pressure from the drainage pipe passage.
A valve body unit including a covering portion that covers the upper surface side of the valve body and is provided with an exhaust port for communicating the ventilation path to the outside on the side. An exhaust valve device comprising a valve body unit and a unit fixing member for fixing the valve body unit to a through hole formed in a lid body that closes an upper opening of a rising pipe connected to a drainage pipe.
The unit fixing member is
An exterior tubular body that is formed in a hollow tubular shape, is inserted into the through hole, and the valve body unit can be arranged inside.
A hooking portion that projects outward from one end of the outer cylinder and is hooked on the peripheral edge of the through hole on the upper surface of the lid.
A fixing portion fixed to the through hole of the lid body in a posture of being hooked by the hooking portion is provided.
The fixing portion has an exhaust valve device having a fixing nut that is screwed to a screw portion formed on the outer cylinder on the lower surface side of the lid and holds the lid together with the hooking portion. .. A tubular body that is inserted into a through hole formed in the lid that closes the upper opening of the rising pipe that connects to the drainage pipe.
A hooking portion that is hooked on the peripheral edge of the through hole on the upper surface of the lid body,
A valve body that closes the air passage formed inside the tubular body and opens in response to an increased pressure from the drainage pipe.
On the lower surface side of the lid, a fixing nut that is screwed to a screw portion provided on the tubular body and holds the lid together with the hooking portion.
An exhaust valve fixing device to the lid, which is characterized by being equipped with. A tubular portion inserted into a through hole formed in the lid, a valve body arranged inside the tubular portion, and a hook protruding from one end of the tubular portion and hooked on the surface side of the lid. A portion, a screw portion formed on the outer surface of the other end side of the cylinder portion, a fixing nut screwed to the screw portion on the back surface side of the lid body and sandwiching the lid body together with the hook portion, and the above. An exhaust valve fixing device to a lid, which comprises a packing inserted between the hook and the lid. The exhaust valve fixing device according to claim 3 or 4 is fixed by sandwiching the peripheral edge of the through hole of the lid body, and can be removed from the lid body by removing the fixing nut by screw rotation. The exhaust valve fixing structure to the lid is characterized by this. A tubular member is inserted into a through hole formed in the lid to form a ventilation path inside, and a valve body that opens and closes to close and open the ventilation path is arranged in the tubular member. A hooking portion formed by projecting from one end of the lid is hooked on the peripheral edge of the through hole on the front surface side of the lid, and the other end of the tubular member projects from the back surface of the lid.
A threaded portion is formed on the outer surface of the protruding portion of the tubular member.
A fixing nut is screwed to the threaded portion.
Packing is provided between the hook and the surface of the lid.
The lid and the packing are sandwiched between the hook and the fixing nut.
The exhaust valve fixing structure to the lid body is characterized in that the tubular member is detachably fixed to the lid body by removing the fixing nut by screw rotation.

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