JP2019210640A - Joint for indirect drainage - Google Patents

Abstract

To provide the joint for the indirect drainage in which drainage smoothly flows to a downstream side.SOLUTION: A joint 1 for the indirect drainage comprises: an outer water passing part 32 provided at one side part of a side peripheral part of a body joint part 15 and communicating a drainage space 16 with the outside of the body joint part 15; and a non water passing part 52 provided at the other side part and in which the drainage space 16 does not communicate with the outside of the body joint part 15, wherein the non water passage part 52 is provided with a ridge 53 extending along a vertical direction.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a joint for indirect drainage that prevents drainage leaking from a drainage pipe on the downstream side from flowing to the upstream side and adversely affecting the drainage.

  Conventionally, it has been adopted in drainage channels that drain drainage of equipment such as water heaters, etc., and wastewater flows backward from the drainage pipe on the downstream side, causing adverse effects such as failure on the equipment. The indirect drainage structure to prevent is already well known (for example, refer patent documents 1 and 2).

JP 2011-162947 A JP 2016-2111166 A

  However, when the drainage discharged from the upstream side passes through the inside of the joint for indirect drainage, the drainage flows out from the water passing part for indirect drainage along the inner peripheral surface of the joint for indirect drainage. There was a problem. In particular, when the pipe end of the upstream drain pipe has a piping structure that opens sideways, the problem is that the inner circumference of the joint for indirect drainage flows down spirally. Becomes particularly prominent.

  This invention is made | formed in view of this present condition, and it aims at providing the joint for indirect drainage from which drainage flows smoothly downstream.

  The present invention is a joint for indirect drainage for indirectly draining the drainage flowing from the upstream drainage pipe toward the downstream drainage pipe, and is connected to the pipe end on the downstream side of the upstream drainage pipe. , Connected to the introduction joint portion into which the waste water flowing from the upstream drain pipe is introduced and the downstream end portion of the introduction joint portion, and the waste water introduced into the introduction joint portion flows down from above A main body joint portion having a drainage space therein, and one side of the side periphery of the main body joint portion is connected to the drainage space and the outside of the main body joint portion. A water portion is provided, and a non-water passage portion that does not allow communication between the drainage space and the outside of the main body joint portion is provided on the other side, and the non-water passage portion includes the non-water passage portion. Indirect drainage, characterized in that a drainage guide is provided to guide the drainage that travels through the section downward It is a joint.

  By setting it as this structure, it can prevent that waste_water | drain is scattered outside from a water flow part by guiding the waste water which conveys the said non-water flow part below.

  Here, a configuration is proposed in which the drainage guide portion is a convex strip portion or a concave strip portion provided in the non-water passage portion along the vertical direction.

  In such a configuration, when the waste water flowing out from the introduction joint portion flows down along the inner peripheral surface of the main body joint portion, the waste water that travels through the non-water-permeable portion is transmitted by the convex strip portion or the concave strip portion. The direction is guided downward. Thereby, the waste water does not scatter to the outside through the water flow portion, and the waste water can be smoothly flowed downward.

  The drainage guide portion is a boundary portion between the water passage portion and the non-water passage portion, and is a convex barrier portion provided so as to protrude toward the axis side of the main body joint portion. A configuration is proposed.

  By setting it as this structure, it can prevent that the waste_water | drain which passes along a non-water-permeable part at the time of normal scattering to the exterior via a water-permeable part.

  In addition, the pipe end of the upstream drain pipe is disposed along a direction intersecting the vertical direction, and the inlet joint is provided with a connection port to which the pipe end of the upstream drain pipe is connected. And the structure by which the said connection port opens in the direction in alignment with the pipe axis of the said upstream drainage pipe, and is arrange | positioned at the side by which the water flow part in the said main body joint part was distribute | arranged is proposed.

  By adopting such a configuration, since the non-water passage portion is provided in the direction in which the drainage discharged from the upstream drain pipe is directed in the drainage space at the normal time, the wastewater passes through the water passage portion. It is possible to prevent scattering to the outside. In particular, when the pipe end portion of the upstream drain pipe is disposed along the direction intersecting the vertical direction, the drainage flows down spirally along the inner peripheral surface of the main body joint portion in the drain space. As is easy, since the non-water-permeable portion is provided with a ridge portion or a ridge portion along the vertical direction, the drainage can be appropriately guided downward and allowed to flow smoothly.

  Further, the introduction joint portion is provided with a connection port to which a pipe end portion of the upstream drain pipe is connected, and a drain passage is formed in the connection port, and a downstream end of the drain passage Is provided with an outlet opening downwardly toward the drainage space along the vertical direction, and an opening edge of the outlet in the introduction joint portion is provided with the drainage passage in the introduction joint portion. A configuration is proposed in which a drainage guide wall portion is formed which is continuous with the inner wall surface and guides the drainage flowing along the inner wall surface of the drainage passage toward the axis of the main body joint portion.

  By adopting such a configuration, the waste water flowing out from the outlet is guided closer to the axis of the main body joint portion by the guide action by the drain guide wall, and the waste water directly scatters to the outside through the water passage portion. Is prevented.

  The joint for indirect drainage of the present invention has an excellent effect of allowing drainage to smoothly flow downward.

It is explanatory drawing which shows the pipe connection structure where the joint for indirect drainage which concerns on an Example was used. The joint for indirect drainage concerning an example is shown, (a) is a perspective view and (b) is a front view. The joint for indirect drainage concerning an example is shown, (a) is a top view and (b) is an AA line sectional view of Drawing 2 (b). The joint for indirect drainage concerning an example is shown, (a) is a BB line sectional view of Drawing 2 (b), and (b) is a CC line sectional view of Drawing 2 (b). It is the DD sectional view enlarged view of the DD line of Fig.3 (a), and has shown the introductory joint part especially. It is the EE sectional view enlarged view of Fig.3 (a), and has shown the non-return valve especially. It is the FF sectional view taken on the line of FIG.3 (b). It is an expanded sectional view which shows a convex step part. It is explanatory drawing which shows the operation | movement outline | summary of a non-return valve, (a) shows a fluid backflow prevention state, (b) shows a passage state. The outer cylinder which concerns on an Example is shown, (a) is a perspective view, (b) is a front view. The outer cylinder which concerns on an Example is shown, (a) is a top view, (b) is the GG sectional view taken on the line of FIG.10 (b). The outer cylinder which concerns on an Example is shown, (a) is the HH sectional view taken on the line of FIG.10 (b), (b) is the II sectional view taken on the line of FIG.11 (a), (c ) Is a cross-sectional view taken along line JJ of FIG. The inner cylinder which concerns on an Example is shown, (a) is a perspective view, (b) is a front view. The inner cylinder which concerns on an Example is shown, (a) is a top view, (b) is a bottom view, (c) is KK sectional drawing of FIG.13 (b). (A) is the LL sectional view taken on the line of FIG.13 (b), (b) is the MM sectional view taken on the line of Fig.14 (a). The introduction coupling part which concerns on an Example is shown, (a) is a perspective view, (b) is a front view. The introduction joint part which concerns on an Example is shown, (a) is a top view, (b) is a partially notched bottom view. The introduction joint part which concerns on an Example is shown, (a) is the NN sectional view taken on the line of FIG.16 (b), (b) is the OO sectional view taken on the line of FIG.17 (a). It is explanatory drawing which shows the state at the time of attaching an introductory joint part to a main body joint part. It is explanatory drawing which shows the state which connected the main body coupling part to the drain pipe part. It is an explanatory view showing a state where the introduction joint is connected to the main body joint and the introduction joint is in a separated state. It is a longitudinal cross-sectional view of the joint for indirect drainage concerning an Example, and has shown the case where the introduction joint part is a connection state. It is explanatory drawing which shows the state which has replaced the check valve.

  An embodiment in which the joint for indirect drainage according to the present invention is used in a drainage route for draining drainage such as a water heater will be described in detail. In addition, this invention is not limited to the Example shown below, A design change is possible suitably.

  As shown in FIG. 1, the indirect drainage joint 1 is disposed and used between a device 2 such as a hot water heater disposed on the upstream side and a drain main pipe 8 disposed on the downstream side. Specifically, the joint for indirect drainage 1 is connected to a plurality of upstream drainage pipe ends 5, 6, and 7 for discharging drainage such as drainage drainage of the equipment 2 (hereinafter referred to as drainage drainage), A downstream drainage pipe portion 10 communicating with the trough 9 connected to the drainage main pipe 8 is connected. The indirect drainage joint 1 has a function of indirectly draining drainage or the like flowing from the upstream toward the drainage main pipe 8. The upstream drain pipe end portions 5, 6, and 7 correspond to the pipe end portions of the upstream drain pipe, and the downstream drain pipe portion 10 corresponds to the downstream drain pipe. In addition, a pipe connection structure 11 is configured by the joint 1 for indirect drainage, the upstream side drain pipe ends 5, 6, and 7, and the downstream side drain pipe 10.

[Indirect drainage fittings]
Hereinafter, the structure of the joint 1 for indirect drainage will be described.

(Main body joint)
As shown in FIGS. 2 and 3, the joint for indirect drainage 1 includes a cylindrical body joint portion 15 whose axial direction is substantially vertical.

  Further, as shown in FIG. 3B and the like, the main body joint portion 15 includes a cylindrical outer cylinder portion 30 and a cylindrical inner cylinder portion 50 accommodated inside the outer cylinder portion 30.

  Further, a drainage space 16 in which drainage flows down from above is formed in the main body joint portion 15, and an upper opening 17 communicating with the drainage space 16 is formed at the upper end portion of the main body joint portion 15. A lower opening 18 that is formed and communicates with the drainage space 16 is formed at the lower end.

  Further, as shown in FIG. 2 and the like, a lid-shaped introduction joint portion 60 made of a member different from the main body joint portion 15 is attached to the upper opening 17 of the main body joint portion 15. In addition, as shown in FIG. 1, upstream drain pipe end portions 5, 6, and 7 are connected to the introduction joint portion 60.

  On the other hand, the upstream end of the downstream drainage pipe 10 is connected to the lower opening 18 of the main joint 15 as shown in FIGS.

  Further, the main body joint portion 15 includes an outer water passage portion 32 that communicates the outside of the main body joint portion 15 and the drainage space 16. Specifically, the outer water flow portion 32 is configured by a large number of through holes.

  Further, as shown in FIG. 3b, a check valve 20 which is a fluid backflow prevention means is arranged in the drainage space 16 of the main body joint portion 15. The check valve 20 has a function of allowing drainage such as drainage to flow downstream in the indirect drainage joint 1 and preventing the drainage of the drainage main pipe 8 from flowing backward in the upstream direction. .

  More specifically, the check valve 20 has an elastically deformable valve structure in which drainage such as drain can flow through the inside and is reduced in diameter toward the lower side. And as shown in FIG. 3b, the discharge port 22 formed in the lower end portion is in a closed state by a pair of flat plate-like mouth edge portions 23, 23 facing each other in a normal state. . When the drainage such as drainage does not flow in the state where the construction as shown in FIG. 1 is completed, as shown in FIG. Becomes a closed fluid backflow prevention state α. In such a state, the fluid (drainage or gas) in the drainage main pipe 8 is prevented from flowing upstream from the check valve 20. Therefore, the fluid does not leak into the device 2 and the device is not damaged.

  On the other hand, when drainage or the like drains from the device 2 and a predetermined amount of drainage or the like accumulates in the check valve 20, the check valve 20 is elastically deformed by the weight of the drainage or the like and is shown in FIG. 9b. The mouth edge portions 23 and 23 are separated from each other, and a passing state β in which the discharge port 22 is opened is obtained. In such a state, drainage such as drain in the check valve 20 is appropriately discharged downstream. When drainage such as drain accumulated in the check valve 20 is appropriately discharged, the check valve 20 returns to its original shape and enters the fluid backflow prevention state α again.

  Even if the drainage flows backward from the downstream drainage pipe section 10 to the indirect drainage joint 1, the backflow water can flow out from the drainage space 16 to the outside through the outer water passage section 32. The structure is properly constructed.

  Next, the outer cylinder part 30 of the main body joint part 15 will be described.

  As shown in FIG. 10 etc., the outflow side connection part 31 is formed in the downstream edge part (lower end part) in the outer cylinder part 30. As shown in FIG. The outflow side connection portion 31 is connected to a downstream drainage pipe end portion 10 a formed at the upstream end of the downstream drainage pipe portion 10.

  In addition, the above-described outer water flow portion 32 is provided in a predetermined portion (one side portion) of the side peripheral portion of the outer cylinder portion 30. This outer water flow portion 32 is configured by a plurality of through holes arranged vertically and horizontally, and the lower end of the outer water flow portion 32 corresponds to the position of the lowermost through hole, and these through hole groups Thus, a water flow area having a predetermined height is secured.

  Further, a check valve take-out outer opening 33 (fluid backflow prevention means take-out outer opening) is provided in a portion (the other portion) opposite to the outer water flow portion 32 in the side peripheral portion of the outer cylinder portion 30. Part). The check valve take-out outer opening 33 is an opening for exchanging the check valve 20 described above, and is dimensioned to allow the check valve 20 to pass through.

  Moreover, as shown in FIG. 11 b, the inner peripheral surface of the outer cylinder part 30 below the outer water passage part 32 and the check valve extraction outer opening part 33 is directed toward the axis of the outer cylinder part 30. A convex step portion 34 formed of a portion where the cylindrical wall is thick is formed around the axis. Further, as shown in FIG. 11 a, a guide protrusion 35 protruding upward is provided on the upper surface of the convex step portion 34. As shown in FIG. 12 b, the guide protrusion 35 is formed so as to be continuous with a tapered inner peripheral surface of the outer tube portion 30 whose diameter is slightly reduced inward.

  Moreover, as shown in FIG. 6, the well-known bayonet mechanism 25 is provided below the convex step part 34, and the check valve 20 can be connected detachably.

  Further, as shown in FIG. 10 and the like, connecting pieces 36 and 37 made up of plate pieces extending in the horizontal direction are provided on the outer peripheral surface of the upstream end portion (upper end portion) of the outer cylinder portion 30. A pair of upper and lower sides are arranged. The connecting pieces 36 and 37 are provided on the same side as the side on which the outer water passage portion 32 is disposed, and have a hook structure that projects horizontally from the outer peripheral surface of the outer cylindrical portion 30. The connecting pieces 36 and 37 juxtaposed in the vertical direction are connected to each other by a pair of left and right reinforcing bridge portions 38 and 38.

  Further, on the upper surface of the upper connection piece 36, a pair of left and right engaging step portions 41, 41 are formed. The locking step portions 41 and 41 are locked with a pair of locked piece portions 72 and 72 provided in an introduction joint portion 60 described later.

  Further, as shown in FIG. 10a, the upstream end portion (upper end portion) of the outer cylinder portion 30 and the side opposite to the side where the outer water passage portion 32 is present (the check valve take-out outer opening portion 33 is provided). On the arranged side), an outer recessed groove 45 for passing through the introduction joint portion that is notched downward is provided.

  Next, the inner cylinder part 50 is demonstrated.

  As shown in FIG. 13 and the like, the inner cylinder part 50 is configured by a cylinder member having an outer diameter slightly smaller than the inner diameter of the outer cylinder part 30. Then, in a state where the inner cylinder part 50 is put in the outer cylinder part 30, the lower end of the inner cylinder part 50 is placed on the convex step part 34 of the outer cylinder part 30 and supported from below.

  Further, the height dimension of the inner cylinder part 50 is such that the upper end of the inner cylinder part 50 and the upper end of the outer cylinder part 30 are substantially equal in a state where the inner cylinder part 50 is accommodated in the outer cylinder part 30. It is a dimension. Further, in a state where the inner cylinder part 50 is disposed in the outer cylinder part 30, the inner cylinder part 50 is rotatable on the same axis with respect to the outer cylinder part 30.

  In addition, a check valve take-out inner opening 51 that can communicate with the check valve take-out outer opening 33 is formed in a predetermined portion (one portion) of the side periphery of the inner cylinder portion 50. Yes. This check valve take-out inner opening 51 is an opening for exchanging the check valve 20 as in the case of the check valve take-out outer opening 33 described above, and the check valve 20 can pass through. It is a dimension.

  Moreover, the non-water-permeable part 52 which does not have the part which connects the inside and outside is formed in the site | part (other site | part) on the opposite side to the check valve extraction inner side opening part 51 among the side peripheral parts in the inner cylinder part 50. Has been. In addition, a plurality of (five) protrusion ribs 53 having a longitudinal rib shape along the vertical direction are provided at a portion on the inner peripheral surface side of the non-water-permeable portion 52 at intervals in the circumferential direction. As shown in FIGS. 4, 14, and the like, the ridge portion 53 is raised on the inner side of the inner cylinder portion 50.

  Further, as shown in FIGS. 14 a, 14 c, etc., on the inner peripheral surface of the inner cylinder portion 50, at the boundary between the check valve take-out inner opening 51 and the non-water-permeable portion 52, there is a body joint portion. A pair of convex barrier portions 54, 54 projecting toward the 15 axial line side (that is, the axial line side of the inner cylinder portion 50) are formed along the vertical direction.

  As shown in FIGS. 8 and 15, a lower inclined portion 55 that is inclined downward toward the inside is provided at the lower end portion of the inner peripheral surface of the inner cylinder portion 50. As shown in FIG. 8, the lower end of the downward inclined portion 55 corresponding to the inner peripheral edge of the lower end portion of the inner cylinder portion 50 in the state where the inner cylinder portion 50 is accommodated in the outer cylinder portion 30 is the outer cylinder portion. It is located closer to the axial line side of the inner cylindrical portion 50 than the inner peripheral edge of the thirty protruding step portions 34. However, the position with the convex part of the bayonet mechanism 25 is excluded.

  Further, as shown in FIGS. 13 and 14 b, a concave guide groove portion 56 into which the guide protrusion 35 of the outer tube portion 30 is inserted is formed on the outer peripheral surface of the inner tube portion 50 at the lower end portion of the inner tube portion 50. It is formed in an arc shape along. In such a configuration, when the inner cylinder portion 50 rotates in the outer cylinder portion 30, the guide protrusion 35 relatively moves in the guide groove portion 56, and the guide protrusion 35 is located on one side of the guide groove portion 56. When it comes into contact with the groove end, the check valve take-out outer opening 33 and the check valve take-out inner opening 51 communicate with each other in an open state γ described later (see FIG. 21). On the other hand, when the guide protrusion 35 abuts against the groove end on the other side of the guide groove 56, the outer water flow portion 32 is shielded from use (δ) (see FIGS. 7 and 22).

  Further, as shown in FIG. 13, the end (upper end) on the upstream side of the inner cylinder portion 50 and the side opposite to the side having the non-water-permeable portion 52 (the check valve take-out inner opening 51 is provided). On the arranged side), an inner joint groove 57 for passing through the introduction joint portion, which is notched downward, is provided.

  Further, as shown in FIGS. 13 a and 14 c, a concave groove-shaped finger-hanging recess 58 having a longitudinal direction as a longitudinal direction is provided on the outer peripheral surface of the non-water-permeable portion 52 in the inner cylinder portion 50. And a plurality (five) are formed. The finger-hanging recess 58 is formed in a portion corresponding to the above-described ridge 53.

[Introduction joint part]
Next, the introduction joint part 60 will be described.

  The introduction joint portion 60 has a lid shape as shown in FIG. 16 and the like, and a plurality of (three) pipe end connection ports 61, 62, 63 are provided on the side peripheral portion of the introduction joint portion 60. . Specifically, the pipe end connection ports 61, 62, 63 are juxtaposed in the lateral direction (substantially horizontal direction) adjacent to each other, and open laterally. The pipe end connection ports 61, 62, 63 are connected to the above-mentioned upstream drain pipe end portions 5, 6, 7 individually. With the pipe end connection ports 61, 62, 63, The connection port according to the present invention is configured.

  As shown in FIGS. 17 and 18, drainage passages 61 a, 62 a, and 63 a are individually formed for the pipe end connection ports 61, 62, and 63 in the introduction joint portion 60. The passages 61a, 62a, 63a are arranged side by side in the left-right direction.

  Further, as shown in FIGS. 17 and 18a, outlets 61b and 62b that are independently opened downward in the vertical direction at the downstream ends of the drain passages 61a, 62a, and 63a juxtaposed in the left-right direction. , 63b. More specifically, the opening shape of the central outlet 62b has a substantially triangular shape with the wall on the side of the pipe end connection port 62 as the bottom, and the flow on the left and right sides through the oblique sides of the outlet 62b. The outlets 61b and 63b are adjacent on both sides. By adopting such a configuration, the drainage flowing through the drainage passages 61a, 62a, 63a from the pipe end connection ports 61, 62, 63 to the outlets 61b, 62b, 63b in the drainage passages 61a, 62a, 63a, etc. The drainage passages 61a, 62a, 63a are prevented from flowing back to the device 2 side.

  Moreover, as shown in FIG. 18 etc., the convex-shaped 1st guide transmission part 65 protrudes vertically downward at the wall surface part by the side of the pipe end connection port 62 which faces the center outflow port 62b. On the other hand, a convex second guide transmission portion 66 protrudes vertically downward on the wall surface portion opposite to the first guide transmission portion 65 facing the outlets 61b, 62b, 63b. Here, as for the 1st guide transmission part 65 and the 2nd guide transmission part 66, the waste_water | drain introduced into the introductory joint part 60 will flow back to another drainage path etc. along the wall surface part of the said introductory joint part 60. FIG. It has a function to prevent. For this reason, the waste water discharged from the introduction joint portion 60 is guided so as to appropriately flow down to the lower drainage space 16.

  As shown in FIG. 17b, of the outlets 61b, 62b, 63b juxtaposed in the left-right direction, the drainage is guided toward the outlet 61b on the downstream end side of the drainage passage 61a located outside. A drainage guide first wall 61c is erected in the vertical direction. Further, at the opening edge of the outlet 61b, a curved drainage guide second wall portion (drainage guide wall portion) that guides the drainage toward the non-water passage portion 52 side of the body joint portion 15 toward the axis of the body joint portion 15. ) 61d is erected in the vertical direction. That is, the drainage that travels along the outer wall surface in the drainage passage 61a is smoothly guided to the outlet 61b side by the drainage guide first wall portion 61c. Further, by providing the drainage guide second wall portion 61d that is continuous with the drainage guide first wall portion 61c, the drainage flowing out from the outflow port 61b is on the non-water passage portion 52 side of the main body joint portion 15 and outside passage. Guided from the water part 32 toward the farther side. Thereby, it is prevented that the waste water scatters directly from the outer water passage portion 32 to the outside. This configuration is similarly applied to the drainage passage 63a and the outlet 63b located on the opposite side, and the description thereof is omitted because the structure is symmetrical.

  Further, as shown in FIG. 16, on the outer peripheral portion of the introduction joint portion 60, a plate-shaped joint portion connection guide portion 71 protruding downward has an outer peripheral shape (substantially U shape) of the introduction joint portion 60. Are formed along. Further, as shown in FIG. 17b and the like, a pair of locked pieces on both sides formed of inner wall surfaces that are thick on the inside are provided at both ends of the joint connection guide portion 71 on the pipe end connection port 62 side. Portions 72 and 72 are provided.

  Further, at both end portions of the joint portion connection guide portion 71, a convex step-shaped guide convex portion 74 provided with a gap is provided below the locked piece portion 72. A gap between the locked piece 72 and the guide protrusion 74 is a guide groove 73.

[Sliding structure]
The introduction joint part 60 described above is attached to the main body joint part 15 in the following procedure.
As shown in FIG. 19, the introduction joint portion 60 is disposed so that the check valve take-out outer opening 33 of the main body joint portion 15 and the pipe end connection ports 61, 62, 63 are opposed to each other. Further, the rotation position of the inner cylinder portion 50 is defined as a position where the check valve extraction inner opening 51 and the check valve extraction outer opening 33 of the outer cylinder portion 30 communicate with each other. It is set as the state which the outside ditch | groove 45 for part passage and the inner side ditch | groove 57 for the introduction joint part passage of the inner cylinder part 50 connected. Then, the lead-in joint portion 60 is assembled close to the main body joint portion 15 in the horizontal direction so that the locked pieces 72, 72 of the lead-in joint portion 60 are brought into contact with the upper connection piece portion 36. . Then, in this assembly process, the outer edge of the connecting piece portion 36 of the main body joint portion 15 is fitted into the guide groove portion 73 of the introduction joint portion 60, and the guide convex portion 74 of the introduction joint portion 60 is used for a pair of upper and lower connections. It fits into the gap between the pieces 36 and 37. The introduction joint portion 60 is slidable with respect to the main body joint portion 15 while the joint portion connection guide portion 71 of the introduction joint portion 60 is guided by the outer edge of the connecting piece portion 36. Then, as shown in FIGS. 4B and 5, when the engaged piece portion 72 of the introduction joint portion 60 gets over the engagement step portion 41 and the introduction joint portion 60 is temporarily fixed to the main body joint portion 15, The portion 60 is attached to the main body joint portion 15. In this mounted state, the guide convex portion 74 of the introduction joint portion 60 is fitted between the pair of upper and lower connection pieces 36 and 37 of the main body joint portion 15, so that the introduction joint portion 60 is attached to the main body joint portion 15. On the other hand, the structure is difficult to detach upward.

  When the assembled state is obtained by the above-described procedure, the main body joint portion 15 is connected to the downstream end portion of the introduction joint portion 60. For example, the wastewater introduced into the introduction joint portion 60 is discharged to the outlets 61b, 62b, and 63b. To the drainage space 16.

  By the way, in the process of mounting the introduction joint part 60 while sliding on the main body joint part 15, the first guide transmission part 65 and the second guide transmission part 66 of the introduction joint part 60 communicate with each other in the main body joint part 15. Passing through the groove portion formed by the introduced outer joint groove 45 for passing through the introduced joint portion and the inner groove groove 57 for passing through the introduced joint portion. For this reason, the 1st guide transmission part 65 and the 2nd guide transmission part 66 do not inhibit the sliding operation | movement of the introductory joint part 60 at the time of mounting | wearing.

  In addition, by performing the reverse procedure of the above-described assembly procedure, it is possible to properly disengage the provisionally-joined introduction joint portion 60 in the reverse direction with respect to the main body joint portion 15.

[Piping connection method]
Next, a pipe connection method using the above-described joint for indirect drainage 1 will be described.

  In order to construct the pipe connection structure 11 using the joint 1 for indirect drainage described above, first, as shown in FIG. 20, the downstream drainage formed at the upstream end of the downstream drainage pipe portion 10 that is preceded by piping. The outflow side connection part 31 of the main body joint part 15 is connected to the pipe end part 10a. At this time, the outer cylinder part 30 of the main body joint part 15 is arranged so that the outer water flow part 32 faces the upstream drain pipe end parts 5, 6, and 7, which are preceded by piping. In FIG. 20, only the central upstream drain pipe end portion 6 is shown in cross section, and the other upstream drain pipe end portions 5 and 7 are omitted from the illustration, thereby simplifying the description.

  Here, the rotation position of the inner cylinder part 50 is set to a position where the check valve extraction inner opening 51 and the check valve extraction outer opening 33 of the outer cylinder part 30 are in the open state γ. If it does so, it will be in the state where the outer side groove 45 for the introduction joint part passage of the outer cylinder part 30 and the inner side groove 57 for the introduction joint part passage of the inner cylinder part 50 were connected.

  In this state, as shown in FIG. 21, the introduction joint part 60 is attached to the main body joint part 15. Here, in the initial position before the introduction joint portion 60 is slid, the pipe end connection ports 61, 62, 63 of the introduction joint portion 60 are separated from the upstream drain pipe end portions 5, 6, 7. It becomes. And the pipe | tube edge part of upstream drain pipe edge part 5,6,7 is cut | disconnected by appropriate length in this open state ε.

  Then, the introduction joint portion 60 at the initial position is slid in a direction approaching the upstream drain pipe end portions 5, 6, 7, and the pipe end connection ports 61, 62, 63 of the introduction joint portion 60 and the upstream drainage A connection state ζ in which the tube ends 5, 6, and 7 are connected is set (see FIG. 23). In addition, since the introduction joint part 60 slides in the direction along the pipe axis of the upstream drain pipe end parts 5, 6, and 7, the connection state ζ is reliably obtained.

  Then, as shown in FIG. 22, the inner cylinder part 50 is rotated with respect to the outer cylinder part 30, and it is set as the use condition (delta) which the outer side water flow part 32 and the inner side opening part 51 for check valve extraction were connected. The pipe connection work is completed.

  In this way, even if the upstream drain pipe ends 5, 6, and 7 and the downstream drain pipe section 10 that are piped in advance are in a hell pipe state, the pipe connection is easily made using the joint for indirect drainage 1. be able to.

  By the way, as shown in FIG. 23, when a malfunction occurs in the check valve 20 due to aging or the like, the joint for indirect drainage 1 can replace only the check valve 20. Specifically, when the inner cylinder part 50 is rotated with respect to the outer cylinder part 30 to be in the open state γ, the check valve 20 in the joint for indirect drainage 1 is connected to the outer opening part 33 for taking out the check valve. And a new check valve 20 can be attached by extracting from the check valve take-out inner opening 51. Moreover, when the inner cylinder part 50 is rotated with respect to the outer cylinder part 30 and the guide protrusion part 35 is brought into contact with the groove end on the other side of the guide groove part 56, the outer water passage part 32 and the check valve take-out inner opening The use state δ in which the part 51 communicates can be set.

[Advantages of Joint 1 for Indirect Drainage]
Below, the advantage regarding the joint 1 for indirect drainage is described in order.

  With respect to the main body joint portion 15 connected to the downstream drainage pipe portion 10, the introduction joint portion 60 is slidable along the tube axis direction of the pipe end portions of the upstream drainage pipe end portions 5, 6, and 7. Therefore, the open joint portion 60 is separated from the pipe end portions of the upstream drain pipe end portions 5, 6, and 7, and the open joint portion 60 is the pipe end portion of the upstream drain pipe end portions 5, 6, and 7. It is possible to change the state to the connection state ζ connected to. Accordingly, since it is not necessary to shift the positions of the upstream drain pipe end portions 5, 6, 7 and the like even in the state of hell piping, the joint for indirect drainage 1 can be applied appropriately and easily.

  Even in a usage environment where there are a plurality of upstream drain pipe end portions 5, 6, and 7, the introduction joint portion 60 is provided with a plurality of pipe end connection ports 61, 62, and 63. Can be discharged in a batch.

  When the inner cylinder part 50 of the main body joint part 15 is rotated with respect to the outer cylinder part 30, and the outside water passage part 32 and the check valve take-out inner opening part 51 are in communication with each other, the drainage is vigorous. Even if it often flows into the drainage space 16, this drainage hits the non-water-permeable portion 52 and flows down appropriately. Therefore, the wastewater that has flowed into the drainage space 16 is not directly scattered outside via the outer water passage portion 32.

  Convex-shaped first guide transmission unit 65 and second guide transmission unit 66 for guiding the drainage to the drainage space 16 by transmitting the drainage to the wall surfaces facing the outlets 61b, 62b, 63b in the introduction joint unit 60. It protrudes vertically downward. For this reason, it is possible to guide the drainage introduced along the direction intersecting the vertical direction by changing the direction so that the drainage is appropriately directed to the drainage space 16.

  Drain passages 61a, 62a, 63a are individually formed for the pipe end connection ports 61, 62, 63 provided in the introduction joint portion 60, and along the vertical direction at the downstream ends of the drain passages 61a, 62a, 63a. Outflow ports 61b, 62b, and 63b that are individually opened downward are provided. For this reason, even when a large amount of wastewater is introduced into the introduction joint portion 60, the wastewater flowing through one drainage passage 61a, 62a, 63a flows into another drainage passage 61a, 62a, 63a and backflows. Can be prevented.

  The drainage guide first wall portion 61c can smoothly guide the drainage in the drainage passage 61a toward the outlet 61b. Further, the drainage guide second wall portion 61d continuous with the drainage guide first wall portion 61c is separated from the outer water flow portion 32 by guiding drainage flowing out from the outlet 61b toward the axis of the main body joint portion 15, And it becomes possible to discharge | emit in the position close | similar to the non-water-permeable part 52, and it prevents that waste_water | drain splashes outside directly.

  Since the non-water-permeable portion 52 is provided with the ridge portion 53 along the vertical direction, the drainage that normally passes through the non-water-permeable portion 52 is smoothly guided downward along the ridge portion 53. Flow down. Note that the ridges 53 do not have to be strictly along the vertical direction, and may be substantially along the vertical direction to such an extent that an action of substantially guiding the drainage is obtained.

  In particular, in the configuration in which the upstream drain pipe end portions 5, 6, 7 are connected laterally to the introduction joint portion 60, when the wastewater flows into the main body joint portion 15 from the introduction joint portion 60, Where the drainage easily flows down on the inner peripheral surface of the joint portion 15 in a spiral shape, it can be suitably caused to flow downward by the ridge portion 53.

  At the boundary between the check valve take-out inner opening 51 and the non-water-permeable portion 52 of the inner cylinder portion 50, convex barrier portions 54, 54 projecting toward the axial side of the main body joint portion 15 are provided in the vertical direction. It is formed along. For this reason, the barrier parts 54 and 54 will be located in the boundary part of the outer side water-permeable part 32 and the non-water-permeable part 52 in use condition (delta), and the waste_water | drain which passes along the non-water-permeable part 52 will pass the outer side water-permeable part 32. Can be prevented from being scattered outside.

  By rotating the inner cylinder part 50 with respect to the outer cylinder part 30, the state can be freely changed between the open state γ and the use state δ. For this reason, maintenance such as replacement of the check valve 20 and cleaning in the drainage space 16 is facilitated.

  Since the lower end of the inner cylinder part 50 is the structure supported from the bottom by the convex step part 34 formed in the internal peripheral surface of the outer cylinder part 30, a structure is simplified and manufacturing cost can be held down low.

  Further, a lower inclined portion 55 that is inclined downward toward the inside is provided at the lower end portion of the inner peripheral surface of the inner cylindrical portion 50, and the lower end of the lower inclined portion 55 is the convex step portion 34 of the outer cylindrical portion 30. It is located in the axial line side of the inner cylinder part 50 rather than the front-end | tip. For this reason, it can prevent that the waste_water | drain which propagates the internal peripheral surface of the inner cylinder part 50 leaks from the clearance gap between the inner cylinder part 50 and the outer cylinder part 30, for example, auxiliary members, such as an O-ring, become unnecessary.

  A guide protrusion 35 is provided in the outer cylinder part 30, and a guide groove part 56 into which the guide protrusion 35 is inserted is formed in the inner cylinder part 50. When the inner cylindrical portion 50 is rotated with respect to the outer cylindrical portion 30, the guide projection 35 is brought into an open state γ when the guide protruding portion 35 comes into contact with the groove end on one side of the guide groove 56, and the other side of the guide groove 56. When the guide protrusion 35 comes into contact with the end of the groove, the use state δ is established. For this reason, it can prevent that the inner cylinder part 50 will rotate unintentionally with the momentum of the waste_water | drain which propagates the inner peripheral surface of the inner cylinder part 50 helically. Further, since the rotation range of the inner cylinder portion 50 is restricted, the rotation operation of the inner cylinder portion 50 is simplified during maintenance.

  Moreover, since the concave finger-hanging concave portion 58 is formed on the outer peripheral surface of the inner cylindrical portion 50, the rotating operation of the inner cylindrical portion 50 is facilitated.

[Main part of the present invention]
Below, the principal part of this invention is described again.

  Since the non-water-permeable portion 52 is provided with the ridge portion 53 along the vertical direction, the drainage that travels through the non-water-permeable portion 52 is normally guided downward and flows down.

  When the inner cylinder part 50 of the main body joint part 15 is rotated with respect to the outer cylinder part 30, and the outside water passage part 32 and the check valve take-out inner opening part 51 are in communication with each other, the drainage is vigorous. Even if it often flows into the drainage space 16, this drainage hits the non-water-permeable portion 52 and flows down appropriately. Therefore, the wastewater that has flowed into the drainage space 16 is not directly scattered outside via the outer water passage portion 32.

  At the boundary between the check valve take-out inner opening 51 and the non-water-permeable portion 52 of the inner cylinder portion 50, convex barrier portions 54, 54 projecting toward the axial side of the main body joint portion 15 are provided in the vertical direction. It is formed along. For this reason, the barrier parts 54 and 54 will be located in the boundary part of the outer side water-permeable part 32 and the non-water-permeable part 52 in use condition (delta), and the waste_water | drain which passes along the non-water-permeable part 52 will pass the outer side water-permeable part 32. Can be prevented from being scattered outside.

  The drainage in the drainage passage 61a is smoothly guided to the outlet 61b side by the drainage guide first wall 61c. Further, the waste water flowing out from the outflow port 61b is guided near the axis of the main body joint portion 15 by the drainage guide second wall portion 61d continuous with the drainage guide first wall portion 61c, so that it is separated from the outer water flow portion 32. And since it discharges | emits in the position close | similar to the non-water-permeable part 52, it is prevented that waste_water | drain splashes directly outside.

  In the above embodiment, the size and shape of each part can be freely selected as appropriate. In addition, as for the height of the outer side water flow part 32, it is desirable that it is 50 mm or more in order to implement | achieve indirect drainage reliably.

  Further, the pipe end connection ports 61, 62, 63 are not limited to three, but may be four or more, or two or one.

  The pipe end portions of the upstream drain pipe end portions 5, 6, and 7 do not have to be along the horizontal direction, and may be any direction that intersects the vertical direction. Correspondingly, the sliding direction of the introduction joint part 60 can be appropriately determined. However, considering the ease of construction, it is desirable that the pipe ends of the upstream drain pipe ends 5, 6 and 7 are in the horizontal direction.

  Further, it is only necessary to obtain the separated state ε and the connected state ζ within the slidable range of the introduction joint 60, and it is not necessary to enter the separated state ε or the connected state ζ at the limit position of the slidable range.

  The 1st guide transmission part 65 and the 2nd guide transmission part 66 may be formed separately, and may be formed so that it may protrude perpendicularly downward so that the outflow ports 61b, 62b, and 63b may be surrounded.

  The ridges 53 provided in the non-water-permeable portion 52 may be ridges formed not in ridges but in recesses.

  As the check valve 20 as the fluid backflow prevention means, a backflow prevention means constituted by another known technique may be used.

  When connecting the upstream drain pipe end portions 5, 6, 7 and the downstream drain pipe portion 10 to the joint for indirect drainage 1, an adhesive, a seal tape, or the like may be used.

  Further, the main body joint portion 15 may not employ a double structure including the outer cylinder portion 30 and the inner cylinder portion 50.

  Moreover, the joint 1 for indirect drainage may be used not only for the purpose of indirectly draining drainage such as drain, but also for the purpose of indirectly draining rainwater.

  In addition, the joint for indirect drainage 1 described so far has a configuration in which the introduction joint portion 60 is slidable with respect to the main body joint portion 15 in order to ensure ease of construction, but the present invention is limited to this. For example, the structure may be such that the introduction joint part 60 is fixed in advance so as not to be slidable with respect to the main body joint part 15, or the introduction joint part 60 and the main body joint part 15 are integrated. Of course.

1 Joint for indirect drainage 5, 6, 7 End of upstream drainage pipe (end of upstream drainage pipe)
10 Drainage pipe (downstream drainage pipe)
11 Pipe connection structure 15 Main body joint part 16 Drainage space 32 Outside water passage part (water passage part)
34 Convex step part 52 Non-water passage part 53 Convex part (drainage guide part)
54 Barrier (drainage guide)
55 Downward inclined part 58 Recess 60 for finger hook Introducing joint parts 61, 62, 63 Pipe end connection port (connection port)
61a, 62a, 63a Drain passages 61b, 62b, 63b Outlet 61d Drainage guide second wall (drainage guide wall)
65 1st guidance transmission part (guidance transmission part)
66 Second guidance transmission unit (guidance transmission unit)
ε Separated state ζ Connected state

Claims (5)

A joint for indirect drainage for indirectly draining the drainage flowing from the upstream drainage pipe toward the downstream drainage pipe,
Connected to the downstream pipe end of the upstream drain pipe, and an introduction joint part into which drainage flowing from the upstream drain pipe is introduced;
A main body joint portion connected to the downstream end of the introduction joint portion, and having a drainage space inside which drainage introduced into the introduction joint portion flows down from above;
With
A water passage portion that communicates the drainage space and the outside of the main body joint portion is provided at one side of the side peripheral portion of the main body joint portion, and the drainage space is provided at the other side portion. And a non-water-permeable part that does not communicate with the outside of the main body joint part is provided,
A joint for indirect drainage, characterized in that a drainage guide part is provided in the non-water-permeable part to guide the drainage passing through the non-water-permeable part downward. 2. The joint for indirect drainage according to claim 1, wherein the drainage guide portion is a convex strip portion or a concave strip portion provided in the non-water-permeable portion along a vertical direction. The drainage guide portion is a boundary portion between the water passage portion and the non-water passage portion, and is a convex barrier portion provided so as to protrude toward the axial line side of the main body joint portion. The joint for indirect drainage according to 1. The pipe end of the upstream drain pipe is disposed along the direction intersecting the vertical direction,
The introduction joint part is provided with a connection port to which a pipe end of the upstream drain pipe is connected,
The said connection port opens in the direction along the pipe axis of the said upstream drainage pipe, and is arrange | positioned in the side by which the water flow part in the said main body joint part was distribute | arranged. The joint for indirect drainage described. The introduction joint portion is provided with a connection port to which a pipe end portion of the upstream drain pipe is connected, and a drainage passage is formed in the connection port, and at the downstream end of the drainage passage. , An outlet opening downwardly toward the drainage space along the vertical direction is provided,
An opening edge of the outlet in the introduction joint portion is continuous with an inner wall surface of the drainage passage in the introduction joint portion, and drainage flowing down along the inner wall surface of the drainage passage is an axis of the main body joint portion. The joint for indirect drainage of any one of Claims 1 thru | or 4 in which the drainage guide wall part which guides near is formed.

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