JP2022065999A - Indirect drainage joint - Google Patents

Abstract

To provide an indirect drainage joint capable of suppressing drainage leakage while avoiding increase in the size.SOLUTION: An indirect drainage joint 1 according to the present invention includes a joint body 4 into which drainage flows in from an end side in an axial direction and from which the drainage flows out of the other end side in the axial direction, and a partition wall 5 provided inside the joint body. The joint body includes a drainage wall section 431 that forms an outer wall to demarcate inside and outside of the joint body and a leakage water wall section 432 that is the outer wall of the joint body, on which an opening 432a that communicates between inside and outside is formed, while the partition wall has an end and the other end in a radial direction connected to the drainage wall section and partitions between the drainage wall section and the leakage water wall section, and the area defined by the drainage wall section and the partition wall is a drainage area through which drainage flows from the end side to the other end side in the axial direction.SELECTED DRAWING: Figure 9

Description

The present invention relates to an indirect drainage joint which is a joint for indirect drainage.

There is indirect drainage as a drainage method for preventing the backflow water that tries to flow backward from the drainage facility toward the device or the like to reach the device or the like while draining the drainage from the device or the like to the drainage facility or the like.

Conventionally, as a joint for indirect drainage, the joint for indirect drainage described in Patent Document 1 is known. The joint for indirect drainage is tubular and has a running water part in which drainage of equipment etc. flows in from one end in the axial direction and drains from the other end in the axial direction, and a tubular part in the axial direction of the flowing water part. The drainage section, which is arranged downward from the end and receives the drainage discharged from the running water section and is discharged to the drainage facility, and the tubular, axially opposite end of the running water section are housed inside. , A peripheral wall portion connecting the flowing water portion and the drainage portion. The drainage portion has an inner diameter larger than the inner diameter of the other end portion in the axial direction of the flowing water portion, and is provided with a receiving portion for receiving the drainage discharged from the flowing water portion. An opening formed in a region including a portion up to one end in the axial direction of the receiving portion is formed.

According to the indirect drainage joint as described above, since the receiving portion is arranged so as to be separated downward from the flowing water portion, the drainage from the equipment or the like falls to the receiving portion via the flowing water portion and is discharged to the drainage facility. In addition, the backflow water from the drainage facility to the equipment side overflows from the receiving part when it exceeds one end in the axial direction of the receiving part, and leaks from the opening to the outside of the indirect drainage joint. Etc. can be prevented from reaching.

Japanese Unexamined Patent Publication No. 2019-194438

In an indirect drainage joint as described in Patent Document 1, in order to suppress leakage of drainage from the opening while ensuring a sufficient flow rate of drainage, the inner diameter of the receiving portion is set with respect to the inner diameter of the flowing portion. It needs to be big enough. However, when the inner diameter of the receiving portion is increased, the outer diameter of the receiving portion is also increased accordingly, and the entire joint for indirect drainage is increased.

Therefore, an object of the present invention is to provide an indirect drainage joint capable of suppressing the increase in size while suppressing the leakage of drainage.

The joint for indirect drainage of the present invention includes a joint main body in which drainage flows in from one end side in the axial direction and drainage flows out from the other end side in the axial direction, and a partition wall provided inside the joint main body. The joint body includes a drainage wall portion which is an outer wall for partitioning the inside and outside of the joint body, and a water leakage wall portion which is an outer wall of the joint body and has an opening for communicating the inside and outside. One end and the other end in the radial direction are connected to the drainage wall portion, the drainage wall portion and the leaky wall portion are partitioned, and the area defined by the drainage wall portion and the partition wall portion is one end in the axial direction. It is configured to be a drainage area where drainage flows from one side to the other end.

According to this configuration, since the drainage wall portion and the leaky wall portion are separated by a partition wall, it is possible to suppress the drainage flowing in the drainage region from flowing to the leaky wall portion side, and the drainage is leaked in normal times when no backflow water is generated. It is possible to prevent leakage from the opening formed in the portion to the outside of the joint body. Therefore, since the leakage of drainage can be suppressed by the partition wall provided inside the joint body, it is possible to suppress the leakage of drainage and the increase in size of the joint for indirect drainage.

Further, the region defined by the leak wall portion and the partition wall is a leak region in which backflow water flowing back from the other end side in the axial direction toward one end side leaks from the opening to the outside of the joint body. The partition wall may be configured to form a communication port for communicating the drainage area and the water leakage area.

According to this configuration, since the communication port is formed in the partition wall, even if the backflow water flows back to the other end of the partition wall and the other end of the drainage area is covered with the backflow water, the communication port is used. The air in the drainage area can be evacuated. Therefore, it is possible to prevent the device from being unable to drain the drainage due to the backflow water clogging the area from the device for discharging the drainage to the drainage area.

Further, the partition wall is configured to be provided in a range from the position of one end of the opening to the position on the other end of the center of the opening in the axial direction in the inside of the joint body. You can also do it.

According to such a configuration, since the partition wall extends to the position on the other end side of the central portion in the axial direction of the opening, the direction in which the drainage passing through the drainage region flows is restricted by the partition wall, and it becomes difficult for the drainage to move to the opening side. .. Therefore, leakage of drainage from the opening can be suppressed.

Further, the partition wall is configured to extend from the position of one end of the opening to the position of the other end of the opening in the axial direction in the inside of the joint body so as to extend substantially the entire area. You can also do it.

According to this configuration, the partition wall extends over substantially the entire area where the opening is formed in the axial direction, so that even if a negative pressure is applied to the inside of the joint body due to wind or the like and a force for sucking out drainage is applied, for example. Since the partition wall hinders the movement of drainage, it is possible to prevent drainage from leaking from the opening.

According to the present invention, it is possible to provide an indirect drainage joint capable of suppressing the increase in size while suppressing the leakage of drainage.

It is a perspective view of the joint for indirect drainage which concerns on one Embodiment of this invention. It is an exploded perspective view of the joint for indirect drainage. (A) It is a front view which shows the equipment side connection part of the indirect drainage joint. (B) is a sectional view taken along line III-III shown in (a). (A) It is a front view which shows the drainage side connection part of the indirect drainage joint. (B) FIG. 6 is a sectional view taken along line IV-IV shown in (a). It is a rear view which shows the joint main body of the indirect drainage joint. It is a front view which shows the joint main body of the indirect drainage joint. It is a top view which shows the joint main body and a partition wall of the indirect drainage joint. It is a bottom view which shows the joint main body and a partition wall of the indirect drainage joint. FIG. 6 is a cross-sectional view taken along the line IX-IX shown in FIG. FIG. 7 is a cross-sectional view taken along the line XX shown in FIG. It is sectional drawing which shows the usage of the indirect drainage joint. It is a figure which shows the use state of the indirect drainage joint.

The indirect drainage joint 1 according to an embodiment of the present invention will be described with reference to FIGS. 1 to 12. For convenience of explanation, the vertical direction will be described with one end side in the axial direction as the upper side and the other end side as the lower side with reference to the vertical direction at the time of installation.

As shown in FIGS. 1 and 2, the indirect drainage joint 1 includes a device-side connection portion 2, a joint main body 4, and a drainage-side connection portion 3. Further, the joint for indirect drainage 1 includes a partition wall 5 provided inside the joint main body 4 (see FIG. 9).

In the device side connection portion 2, the upper side (one end side in the axial direction) is connected to the device or the pipe extending from the device or the like, and the lower side (the other end side in the axial direction) is connected to the joint body 4, so that drainage can pass through the inside. It is configured as. Specifically, as shown in FIG. 3A, the device-side connection portion 2 includes a cylindrical device-side water passage section 21 and a device-side mounting section 22 that can be engaged with the joint body 4. The device-side water passage unit 21 of the present embodiment includes an operation unit 211 that protrudes outward in diameter from the outer peripheral surface.

As shown in FIG. 3B, the device-side water passage section 21 is provided on the upper side (one end side in the axial direction of the device-side water flow section 21) and is provided for the device or the like or for a pipe or the like extending from the device or the like. Equipment side insertion that is provided on the lower side (the other end side in the axial direction of the device side water passage part 21) and the lower end portion is inserted into the inside of the joint body 4 with the device side engaging portion 212 that engages with the device side. A unit 213 is provided. In the present embodiment, the device-side engaging portion 212 and the device-side interpolating portion 213 have a cylindrical shape, and the lower end portion of the device-side engaging portion 212 and the upper end portion of the device-side interpolating portion 213 are substantially coaxially connected. Has been done. Further, the device-side engaging portion 212 of the present embodiment is a cylindrical portion in which a female screw 212a is formed on the inner peripheral surface, and can be screwed to a male screw provided in the device or the like. That is, the device-side engaging portion 212 of the present embodiment directly engages with the device or the like to connect the device or the like and the device-side connecting portion 2. Further, the device-side interpolating portion 213 has a size that can be accommodated inside the joint body 4 when the device-side mounting portion 22 engages with the joint body 4.

The device-side mounting portion 22 is a portion that connects the joint body 4 and the device-side connecting portion 2. Specifically, the device-side mounting portion 22 has a cylindrical mounting base portion 221 having an inner diameter larger than the outer diameter of the device-side water passage portion 21, and the mounting base portion 221 from the inner peripheral surface of the lower end portion in the axial direction to the inner diameter. It is provided with a device-side engaging claw 222 that is projected. Further, the upper end portion of the mounting base portion 221 is connected to the outer peripheral surface of the water passage portion 21 on the device side, and the space surrounded by the outer peripheral surface of the water passage portion 21 on the device side and the inner peripheral surface of the mounting base portion 221 is the joint main body. It is possible to accommodate one end portion (fitting portion 41 on the device side) in the axial direction of 4. In the present embodiment, a pair of device-side engaging claws 222 are provided at a distance of approximately 180 degrees in the circumferential direction of the mounting base portion 221. Further, a plurality of plane surfaces are formed on the outer peripheral surface of the mounting base portion 221. The outer peripheral surface of the mounting base portion 221 of the present embodiment is formed in a polygonal shape in a cross section.

The drainage side connection portion 3 is connected to the joint body 4 at the upper end side (one end side in the axial direction) and to a pipe or the like communicating with the drainage facility at the lower end side (the other end side in the axial direction), and drainage can pass through the inside. It is configured as follows. Specifically, as shown in FIG. 4A, the drainage side connection portion 3 is provided at the upper end portion, and is provided at the drainage side mounting portion 31 that engages with the other end side of the joint body 4 and the lower end portion. A pipe engaging portion 32 that engages with a pipe or the like, and a connecting portion 33 that connects the drainage side mounting portion 31 and the pipe engaging portion 32 are provided.

As shown in FIG. 4B, the drainage side mounting portion 31 is a cylindrical portion that engages with the lower end portion (the other end portion in the axial direction) of the joint body 4. Specifically, the drainage side mounting portion 31 has a tubular fitting cylinder portion 311 and a drainage side engaging claw that protrudes inward from the inner peripheral surface of the upper end portion (one end portion in the axial direction) of the fitting cylinder portion 311. 312 and. The drainage side mounting portion 31 of the present embodiment is externally fitted to the lower end portion of the joint main body 4 and engages with the joint main body 4. That is, the fitting cylinder portion 311 of the present embodiment can be externally fitted to the other end of the joint body 4 in the axial direction (drainage side fitting portion 42). Further, a pair of drainage side engaging claws 312 are provided at a distance of approximately 180 degrees in the circumferential direction of the fitting cylinder portion 311. Further, a plurality of flat surfaces are formed on the outer peripheral surface of the fitting cylinder portion 311. The outer peripheral surface of the fitting cylinder portion 311 of the present embodiment is formed in a polygonal shape in a cross section.

The pipe engaging portion 32 engages with the pipe or the like to connect the drainage side connecting portion 3 and the pipe or the like. Specifically, the pipe engaging portion 32 is tubular and has a portion on the outer peripheral surface capable of engaging with a pipe or the like, and the inside of the pipe engaging portion 32 is configured to allow water to pass through. The pipe engaging portion 32 of the present embodiment is provided with a male screw portion 32a on the outer peripheral surface. That is, the pipe engaging portion 32 of the present embodiment is configured so that the outer peripheral surface is screwed with the pipe or the like and water can pass through the inside.

The joint body 4 has a tubular shape, and is a portion where an opening 432a is formed in a part of an outer wall that partitions the inside and outside of the joint body 4. Further, the joint body 4 is configured such that drainage flows in from the upper end portion (one end side in the axial direction) and drainage flows out from the lower end portion (the other end side in the axial direction). Specifically, as shown in FIGS. 5 and 6, the joint body 4 has a device-side fitting portion 41 that can be fitted to the device-side connection portion 2 at the upper end portion and a drainage-side connection portion at the lower end portion in the axial direction. A drainage-side fitting portion 42 that can be fitted with 3 and an indirect drainage portion 43 that connects the equipment-side fitting portion 41 and the drainage-side fitting portion 42 are provided. Further, the joint body 4 includes a mounting direction indicating portion 44 indicating a mounting direction, and the mounting direction indicating portion 44 of the present embodiment is an arrow indicating a direction in which drainage flows at the time of mounting.

The device-side fitting portion 41 is a portion to which the device-side mounting portion 22 can engage. Further, the device-side fitting portion 41 is a tubular portion whose outer diameter is smaller than the inner diameter of the mounting base portion 221 and larger than the inner diameter of the device-side engaging claw 222. That is, the device-side fitting portion 41 is a portion where the mounting base portion 221 can be externally fitted and the device-side engaging claw 222 is engaged when the mounting base portion 221 is externally fitted. Specifically, the device-side fitting portion 41 has a device-side groove portion 411 to which the device-side engaging claw 222 can be engaged, and a device-side engaging claw 222 from the upper end portion (one end in the axial direction) to the device-side groove portion 411. A guide unit 412 on the device side for guiding is provided. The device-side groove portion 411 of the present embodiment is provided over one circumference in the circumferential direction of the device-side fitting portion 41. Further, the device side guide portion 412 is a recess formed in the device side fitting portion 41, and is a straight portion 4121 extending from one end portion in the axial direction of the joint body 4 to the other end side (from the upper end side to the lower end side). A tapered portion 4122 extending from the other end portion (lower end portion) of the portion 4121 to the device side groove portion 411 and having a large outer diameter on the other end side (lower side) is provided. That is, the device-side guide portion 412 is a recess into which the device-side engaging claw 222 can be fitted, and the device-side engaging claw 222 moves along the device-side guide portion 412 to move the device-side engaging claw 222. Guide to the device side groove 411. In the present embodiment, the outer diameter of one end of the tapered portion 4122 is smaller than the inner diameter of the device-side engaging claw 222.

The drainage side fitting portion 42 is a portion to which the drainage side mounting portion 31 can engage. Further, the drainage side fitting portion 42 is a tubular portion whose outer diameter is smaller than the inner diameter of the fitting cylinder portion 311. That is, the drainage side fitting portion 42 is a portion where the fitting cylinder portion 311 can be externally fitted and the drainage side engaging claw 312 is engaged when the fitting cylinder portion 311 is externally fitted. Specifically, the drainage side fitting portion 42 includes a drainage side groove portion 421 to which the drainage side engagement claw 312 can engage, and a drainage side engagement claw 312 from the lower end portion (the other end in the axial direction) to the drainage side groove portion 421. A drainage side guide portion 422 that guides the vehicle is provided. The length of the drainage gutter portion 421 of the present embodiment in the circumferential direction is substantially equal to the length in the circumferential direction of the drainage side engaging claw 312. Further, the drainage gutters 421 of the present embodiment are provided at two locations separated by approximately 180 degrees in the circumferential direction of the drainage side fitting portion 42. Further, the drainage side guide portion 422 is a recess formed in the drainage side fitting portion 42, and is a straight portion 4221 extending upward (one end side in the axial direction) from the lower end portion and a drainage side groove portion from the upper end portion of the straight portion 4221. It is provided with a tapered portion 4222 extending to 421 and increasing the outer diameter on the upper end side. That is, the drainage side guide portion 422 is a recess into which the drainage side engaging claw 312 can be fitted, and the drainage side engaging claw 312 moves along the drainage side guide portion 422 to move the drainage side engaging claw 312. Guide to the drainage gutter 421. In the present embodiment, the outer diameter of the other end (lower end) of the tapered portion 4222 is smaller than the inner diameter of the drain side engaging claw 312. Further, the inner diameter of the drainage side fitting portion 42 of the present embodiment is larger than the inner diameter of the indirect drainage portion 43, and the outer diameter is larger than the outer diameter of the indirect drainage portion 43.

The indirect drainage portion 43 is a tubular portion that connects the equipment-side fitting portion 41 and the drainage-side fitting portion 42. Specifically, the indirect drainage portion 43 includes a drainage wall portion 431 that is an outer wall that partitions the inside and outside of the joint body 4, and a leak wall portion 432 that is an outer wall of the joint body 4 and has an opening 432a that communicates inside and outside. , Equipped with. In the present embodiment, the indirect drainage portion 43 is connected to a drainage wall portion 431 extending substantially half a circumference, one end connected to the other end of the drainage wall portion 431 and the other end connected to one end of the drainage wall portion 431 in the circumferential direction. The leaky wall portion 432 is provided.

The drainage wall portion 431 is a wall body that partitions the inside and outside of the joint body 4 so that water cannot pass through. That is, the drainage wall portion 431 is a wall body in which an opening is not formed.

The water leakage wall portion 432 is a wall body of the joint body 4, and is formed with an opening 432a through which water can pass through the inside and outside of the joint body 4. The opening 432a of the present embodiment is formed over substantially the entire circumferential direction of the leak wall portion 432. Further, the leak wall portion 432 of the present embodiment includes a cover portion 4320 provided in the opening 432a portion. The cover portion 4320 of the present embodiment includes a plurality of circumferential ribs 4321 extending along the circumferential direction of the opening 432a, and axial ribs 4322 extending along the axial direction. As a result, an opening 432a in which a plurality of slits 432b are aggregated is formed. The shape of the cover portion 4320 is not limited to the above shape, and various shapes that do not hinder the discharge of backflow water can be adopted.

As shown in FIGS. 7 and 8, the partition wall 5 is a wall body in which one end and the other end in the radial direction are connected to the drainage wall portion 431 and partition the drainage wall portion 431 and the leak wall portion 432. Further, the region defined by the drainage wall portion 431 and the partition wall 5 is a drainage region S1 in which drainage moves from the upper side to the lower side (from one end side to the other end side in the axial direction), and the water leakage wall portion 432. The region defined by the partition wall 5 is a leak region S2 in which the backflow water flowing back from the lower side to the upper side leaks from the opening 432a to the outside of the joint body 4. Further, the partition wall 5 partitions between the drainage wall portion 431 and the leaky wall portion 432 so that the drainage does not pass from the drainage region S1 to the leaky region S2. Specifically, the partition wall 5 is provided on the upper end side (one end side in the axial direction) of the partition main body portion 51 that partitions between the drainage wall portion 431 and the water leakage wall portion 432, and is provided in the water leakage region S2. A drainage guide portion 52 that closes the upper end portion is provided. Further, as shown in FIGS. 9 and 10, the partition wall 5 of the present embodiment extends from the upper end to the lower end of the indirect drainage portion 43. That is, the partition wall 5 of the present embodiment extends from the upper end A2 of the opening 432a (the upper end of the uppermost slit 432b) to the lower end A1 (the lower end of the lowermost slit 432b) in the axial direction. Further, the partition wall 5 of the present embodiment is configured integrally with the joint main body 4.

As shown in FIGS. 7 and 9, the drainage guide portion 52 is a semicircular plate body that closes the upper end portion of the water leakage region S2. Further, the drainage guide portion 52 is provided with a leak connection end portion 521 connected to the leak wall portion 432 and a partition connection end portion 522 connected to the partition main body portion 51 on the outer edge. The partition connection end 522 includes a straight end 5221 extending along the radial direction and a curved end 5222 that curves from the straight end 5221 toward the leaky connection end 521. Further, the drainage guide portion 52 is arranged on the joint body 4 in a state of being tilted so that the water leakage connection end portion 521 is on the upper end side and the partition connection end portion 522 is on the lower end side.

As shown in FIGS. 8 and 10, the partition main body 51 is a wall body that partitions the drainage area S1 and the water leakage area S2. One end of the partition main body 51 of the present embodiment is connected to the drainage guide 52 in the axial direction, and the other end is the other end side (specifically, the most) side of the other end (lower end A1) of the opening 432a. Extends below the lower edge of the lower slit 432b). Further, the partition main body 51 of the present embodiment is provided so as to be inclined so as to approach the leak wall portion 432 side from the upper side to the lower side. Further, the partition main body 51 includes a flat wall portion 511 which is a flat wall body extending along the radial direction of the joint main body 4, and a curved wall portion 512 extending along the circumferential direction. Specifically, in the flat wall portion 511, one end in the radial direction is connected to the drainage wall portion 431, and the first flat wall portion 5111 constituting the radial end portion of the partition main body 51 and the other end in the radial direction are It is provided with a second flat wall portion 5112 which is connected to the drainage wall portion 431 and constitutes the other end portion in the radial direction of the partition main body portion 51. The curved wall portion 512 is radially connected at one end to the other end of the first flat wall portion 5111 and the other end to one end of the second flat wall portion 5112, from the flat wall portion 511 to the leak wall portion 432 side. Curve to approach. Further, the partition main body 51 is formed with a communication port 51a that communicates the drainage region S1 and the leak region S2.

The communication port 51a is a through hole formed in the partition wall 5 and penetrating in the thickness direction of the wall. Specifically, the communication port 51a is a hole formed so that the upper end of the communication port 51a is located above the lower end A1 of the opening 432a. The communication port 51a of the present embodiment is an elongated hole having an open lower end extending upward from the lower end portion of the partition main body portion 51. Further, the upper end of the communication port 51a of the present embodiment is formed so as to be above the central portion A3 (position between the lower end A1 and the upper end A2) in the axial direction of the opening 432a. Further, the communication port 51a is formed in the curved wall portion 512.

A method of using such an indirect drainage joint 1 will be described. First, a method of assembling the joint for indirect drainage 1 will be described.

As shown in FIG. 11, in the indirect drainage joint 1, the device side connection portion 2 is fitted to the upper end portion (one end portion in the axial direction) of the joint body 4, and the drainage side connection portion 3 is fitted to the lower end portion (the other end portion in the axial direction). It can be assembled by fitting. Specifically, the device-side connection portion 2 is fitted to the device-side fitting portion 41, and the drainage-side connection portion 3 is fitted to the drainage-side fitting portion 42. Incidentally, since the pipe P may be directly attached to the joint main body 4, the drainage side connection portion 3 can be attached to the joint main body 4 at the installation site of equipment or the like.

When fitting the device-side connection portion 2 into the joint body 4, the device-side insertion section 213 is inserted inside the device-side fitting section 41, and the mounting base portion 221 is externally fitted into the device-side fitting section 41. That is, the outer wall of the device-side fitting portion 41 is inserted into the space defined by the mounting base portion 221 and the device-side insertion portion 213. Specifically, until the device-side engaging claw 222 fits into the device-side groove portion 411, the device-side engaging claw 222 is guided by the device-side guide portion 412, and the device-side connecting portion 2 is moved from the upper side to the lower side of the joint body 4. Move to the side. When the device-side engaging claw 222 fits into the device-side groove portion 411, the device-side engaging claw 222 and the device-side groove portion 411 engage with each other, and the movement of the device-side connecting portion 2 to the upper side is restricted. Further, since the device side groove portion 411 is provided over one circumference in the circumferential direction of the joint body 4, the device side engaging claw 222 can move in the circumferential direction along the device side groove portion 411, and thus the device. The side connection portion 2 can rotate relative to the joint body 4 about the axial direction of the joint body 4.

When fitting the drainage side connection portion 3 to the joint body 4, the drainage side mounting portion 31 is externally fitted to the drainage side fitting portion 42. That is, the drainage side fitting portion 42 is inserted inside the fitting cylinder portion 311. Specifically, until the drainage side engaging claw 312 fits into the drainage side groove portion 421, the drainage side engaging claw 312 is guided by the drainage side guide portion 422, and the drainage side connection portion 3 is connected from the lower side of the joint body 4. Move it to the upper side. When one drainage side engaging claw 312 fits into one drainage side groove portion 421 and the other drainage side engaging claw 312 fits into the other drainage side groove portion 421, the drainage side engaging claw 312 and the drainage side groove portion 421 respectively. Is engaged, and the movement of the drainage side connection portion 3 to the lower side and the rotation with respect to the joint body 4 are restricted.

As shown in FIG. 12, the indirect drainage joint 1 is attached between the equipment or the like and the drainage facility. The equipment or the like is equipment or equipment that requires consideration for hygiene and is not preferable to be directly connected to the drainage equipment, and is, for example, a latent heat recovery type water heater H. The indirect drainage joint 1 of the present embodiment is directly attached to the latent heat recovery type water heater H. Further, the indirect drainage joint 1 is attached to the latent heat recovery type water heater H so that one end side in the axial direction is on the upper side and the other end side is on the lower side.

The indirect drainage joint 1 is attached to the device or the like by engaging the device-side engaging portion 212 with the device or the like. Specifically, by screwing the male screw (not shown) provided on the device or the like and the female screw 212a formed on the device-side engaging portion 212, the device-side engaging portion 212 and the device or the like are engaged with each other. The indirect drainage joint 1 is connected to a device or the like. Since the device-side connection portion 2 of the present embodiment can rotate relative to the joint body 4 about the axial direction of the joint body 4, only the device-side connection portion 2 is screwed to the device or the like. Since it can be rotated, it is easy to screw it into a device or the like. Further, by rotating the joint body 4 relative to the device-side connection portion 2, the direction of the opening 432a can be set to an arbitrary direction. Further, since the operation unit 211 is provided on the outer peripheral surface of the device-side engaging portion 212, a finger can be put on the operation unit 211, so that the operation of rotating the device-side connection portion 2 is easy.

Further, a pipe or the like communicating with the drainage facility is attached to the other end of the indirect drainage joint 1 in the axial direction (the lower end when attached to a device or the like). The indirect drainage joint 1 of the present embodiment is attached to the pipe P communicating with the drainage facility via the flexible pipe F. Specifically, by screwing the cap nut F1 of the flexible pipe F into the pipe engaging portion 32, the flexible pipe F whose other end is connected to the pipe P is engaged with the pipe engaging portion 32, and indirect drainage is performed. The joint 1 is connected to the flexible pipe F. When the cap nut F1 is screwed into the pipe engaging portion 32, the cap nut F1 can be easily rotated by applying a tool such as a spanner to the flat surface formed on the outer peripheral surface of the fitting cylinder portion 311.

As described above, the movement of water inside the indirect drainage joint 1 connected to the equipment or the like on one end side (upper side) in the axial direction and to the piping or the like on the other end side (lower side) will be described with reference to FIG. do.

The drainage discharged from the device or the like moves (falls) due to gravity and moves to the joint body 4 through the device-side connection portion 2. The drainage that has moved to the joint body 4 moves (falls) to the drainage side connection portion 3 through the drainage region S1. Specifically, of the drainage moved to the joint body 4, the drainage at the position near the drainage wall portion 431 moves according to gravity as it is (path R1), and the drainage at the position near the leaky wall portion 432 is collected by the drainage guide portion 52. It is guided to a position closer to the drainage wall portion 431 and moves in the drainage region S1 according to gravity (path R2). The drainage that has moved from the drainage region S1 to the drainage side connection portion 3 moves inside the drainage side connection portion 3 and is discharged to a pipe or the like.

The backflow water that is going to flow back from the pipe or the like toward the device side moves to the joint body 4 through the drainage side connection portion 3. The backflow water flowing back to a position above the lower end A1 of the opening 432a formed in the water leakage wall portion 432 leaks to the outside of the joint body 4 from the opening 432a (specifically, the slit 432b) (path R3). Therefore, it is possible to prevent the backflow water from reaching the device or the like. Specifically, since the water leakage region S2 has an opening 432a as compared with the drainage region S1, the water flow resistance is smaller. Therefore, the backflow water flows to S2 instead of S1 and leaks from the opening 432a to the outside of the joint body 4. Since the backflow water leaks to the outside of the joint body 3, it is possible to prevent the device H from stopping or failing due to the backflow of drainage.

According to the indirect drainage joint 1 having the above configuration, the drainage wall portion 431 and the leaky wall portion 432 are partitioned by the partition wall 5, so that the drainage flowing through the drainage region S1 flows to the leaky wall portion 432 side. It can be suppressed, and drainage can be suppressed from leaking to the outside of the joint body 4 from the opening 432a formed in the leak wall portion 432 in normal times when backflow water does not occur. Therefore, since the partition wall 5 provided inside the joint body 4 can suppress the leakage of drainage, it is possible to suppress the leakage of drainage and suppress the increase in size of the joint 1 for indirect drainage.

Further, since the communication port 51a is formed in the partition wall 5, the backflow water flows back to the other end (lower end) of the partition wall 5, and the other end (lower end) of the drainage region S1 is covered with the backflow water. Even if this is done, the air in the drainage region S1 can be evacuated from the communication port 51a. Therefore, it is possible to prevent the device from being unable to drain the drainage due to the backflow water clogging the area from the device for discharging the drainage to the drainage region S1.

Further, since the partition wall 5 extends to the position on the other end side (lower end side) from the central portion A3 (vertical central portion) in the axial direction of the opening 432a, the direction in which the drainage passing through the drainage region S1 flows is determined by the partition wall 5. It is restricted and it becomes difficult for drainage to move to the opening 432a side. Therefore, leakage of drainage from the opening 432a can be suppressed.

Further, since the partition wall 5 extends over substantially the entire area (from the lower end A1 to the upper end A2) where the opening 432a is formed in the axial direction, a negative pressure is applied to the inside of the joint body 4 due to, for example, wind, and drainage is drained. Even if a suction force is applied, the partition wall 5 hinders the movement of the drainage, so that the drainage can be prevented from leaking from the opening 432a.

Further, the partition main body 51 is provided with a curved wall portion 512 extending along the circumferential direction of the joint main body 4, and the curved wall portion 512 is curved in a direction approaching the water leakage wall portion 432, so that the axial direction of the drainage region S1 Since the cross-sectional area of the surface orthogonal to the can be increased, the maximum amount of drainage that can flow in the drainage region S1 can be increased.

Further, since the partition wall 5 and the joint main body 4 are integrally configured, the number of parts can be suppressed and the assembly becomes easy.

Further, since the upper end of the communication port 51a is one end side (upper side) of the central portion A3 of the opening 432a in the axial direction, it is possible to prevent the entire area of the communication port 51a from being blocked by the backflow water, and the drainage area S1 Since the air can be reliably evacuated, it is possible to prevent the area from the device for discharging the drainage to the drainage region S1 from being clogged with the backflow water.

Further, since the device-side connection portion 2 and the joint main body 4 are separate bodies, air can be released from the connection portion between the device-side connection portion 2 and the joint main body 4, and the air can be reliably evacuated from the drainage region S1. It is possible to prevent the area from the device for discharging the wastewater to the drainage area S1 from being clogged by the backflow water.

Further, since the communication port 51a is formed in the curved wall portion 512, the distance between the communication port 51a and the drainage wall portion 431 can be increased as compared with the case where the communication port 51a is formed in the flat wall portion 511. It becomes difficult for the drainage flowing along the portion 431 to move to the leak region S2 through the communication port 51a.

Although the embodiments of the present invention have been described above with reference to an example, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the gist of the present invention.

For example, although the shape of the joint body 4 has been described as being cylindrical, it can be a cylinder having various shapes such as a square cylinder.

Further, the number of the drainage wall portion 431 and the leak wall portion 432 is not limited to one, and a plurality of them may be provided. In this case, a plurality of partition walls 5 are also provided inside the joint body 4, and partition between the plurality of drainage wall portions 431 and the plurality of leak wall portions 432. For example, the partition wall 5 can be cross-shaped in cross section.

Further, the case where the partition wall 5 is configured integrally with the joint main body 4 has been described, but the present invention is not limited to this, and the partition wall 5 and the joint main body 4 are configured as separate bodies, and the partition wall 5 is opposed to the joint main body 4. It may be configured so that it can be inserted inside the.

Further, although the case where the lower end portion of the partition wall 5 extends below the lower end A1 of the opening 432a has been described, the lower end portion of the partition wall 5 may be configured to be above the lower end A1 of the opening 432a. good.

Further, although the opening 432a has been described as being formed over substantially the entire circumferential direction of the leaky wall portion 432, it may be formed in a part of the leaky wall portion 432 in the circumferential direction.

Further, although the device-side connection unit 2 has been described as being directly connected to the device or the like, it may be indirectly connected to the device or the like via a pipe extending from the device.

Further, although the indirect drainage joint 1 has been described as having the drainage side connection portion 3, it may be configured not to include the drainage side connection portion 3. In such a configuration, a pipe such as a resin pipe (for example, a vinyl chloride pipe) communicating with the drainage facility is inserted into, for example, the inside of the drainage side fitting portion 42 of the joint body 4, and the outer peripheral surface and the drainage side of the pipe or the like are inserted. By adhering the inner peripheral surface of the fitting portion 42, the indirect drainage joint 1 and the pipe or the like can be connected.

Further, although the joint body 4, the partition wall 5, the device side connection part 2, and the drainage side connection part 3 have been described as separate parts, the device side connection part 2 and the drainage side connection part 3 are described as separate parts. It may be configured as one, the joint main body 4 and the drainage side connection portion 3 may be integrally configured, or the device side connection portion 2, the joint main body 4, and the drainage side connection portion 3 may be integrally configured. You may.

Further, it has been explained that the communication port 51a extends from the other end (lower end) of the partition wall 5 in the axial direction toward one end side (upper side), but it is a hole formed in the middle of the partition wall 5 in the axial direction. May be good.

Further, although it has been described that the device-side engaging claws 222 are provided in pairs at a distance of approximately 180 degrees in the circumferential direction of the mounting base portion 221. However, the present invention is not limited to such a configuration, and there is only one device-side engaging claw 222. It may be provided, or it may be provided in three or more. When three or more engaging claws 222 on the device side are provided, the arrangement may be such that they are arranged at equal intervals in the circumferential direction of the mounting base portion 221 or may be arranged unevenly.

Further, although it has been described that the drainage side engaging claws 312 are provided in pairs at a distance of approximately 180 degrees in the circumferential direction of the fitting cylinder portion 3, the drainage side engaging claws 312 are not limited to such a configuration, and the drainage side engaging claws 312 are 1. It may be a configuration in which only one is provided, or a configuration in which three or more are provided. When three or more drainage side engaging claws 312 are provided, the arrangement may be such that they are arranged at equal intervals in the circumferential direction of the fitting cylinder portion 311 or may be arranged unevenly.

1 ... Indirect drainage joint, 2 ... Equipment side connection part, 21 ... Equipment side water passage part, 211 ... Operation part, 212 ... Equipment side engagement part, 212a ... Female screw 213 ... Equipment side insertion part, 22 ... Equipment Side mounting part, 221 ... Mounting base, 222 ... Equipment side engaging claw, 3 ... Drainage side connection part, 31 ... Drainage side mounting part, 311 ... Fitting cylinder part, 312 ... Drainage side engaging claw, 32 ... Piping staff Joint part, 32a ... Male threaded part, 33 ... Connecting part, 4 ... Joint body, 41 ... Equipment side fitting part, 411 ... Equipment side groove part, 412 ... Equipment side guide part, 4121 ... Straight part, 4122 ... Tapered part, 42 ... Drainage side fitting part, 421 ... Drainage side groove part, 422 ... Drainage side guide part, 4221 ... Straight part, 4222 ... Tapered part, 43 ... Indirect drainage part, 431 ... Drainage wall part, 432 ... Leakage wall part, 432a ... Opening, 432b ... Slit, 4320 ... Cover, 4321 ... Circumferential rib, 4322 ... Axial rib, 44 ... Mounting direction indicator, 5 ... Partition wall, 51 ... Partition body, 511 ... Flat wall, 5111 ... One flat wall part, 5112 ... Second flat wall part, 512 ... Curved wall part, 52 ... Drainage guide part, 521 ... Leakage connection end part, 522 ... Partition connection end part, 5221 ... Straight end part, 5222 ... Curved end part , A1 ... lower end, A2 ... upper end, A3 ... central part, F ... flexible pipe, F1 ... cap nut, H ... latent heat recovery type water heater, P ... piping, R1, R2, R3 ... path, S1 ... drainage area, S2 … Leakage area

Claims (4)

It is provided with a joint body in which drainage flows in from one end side in the axial direction and drainage flows out from the other end side in the axial direction, and a partition wall provided inside the joint body.
The joint body includes a drainage wall portion that is an outer wall that partitions the inside and outside of the joint body, and a leak wall portion that is an outer wall of the joint body and has an opening that communicates inside and outside.
One end and the other end of the partition wall in the radial direction are connected to the drainage wall portion, and the partition wall is partitioned between the drainage wall portion and the leak wall portion.
The area defined by the drainage wall portion and the partition wall is an indirect drainage joint which is a drainage area in which drainage flows from one end side to the other end side in the axial direction. The region defined by the leak wall portion and the partition wall is a leak region in which backflow water flowing back from the other end side in the axial direction toward one end side leaks from the opening to the outside of the joint body.
The indirect drainage joint according to claim 1, wherein a communication port for communicating the drainage region and the water leakage region is formed on the partition wall. According to claim 1 or 2, the partition wall is provided in a range of the inside of the joint body from the position of one end of the opening to the position on the other end of the center of the opening in the axial direction. The described indirect drainage fitting. The partition wall is provided so as to extend substantially the entire area from the position of one end of the opening to the position of the other end of the opening in the axial direction in the inside of the joint body. The joint for indirect drainage according to any one of the items.

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