JP6464074B2 - Indirect drainage joint and cover body - Google Patents

Description

  The present invention relates to an indirect drainage joint installed in a drainage path for indirectly draining drainage from a device to a drainage pipe, and a cover body for the indirect drainage joint.

  For example, in a device such as a gas water heater having a latent heat recovery mechanism, drainage wastewater, which is condensed water derived from gas combustion, is generated by a mechanism that improves the thermal efficiency as compared with the related art. Such drain drainage is regulated so as to be indirectly drained to a predetermined drainage facility in consideration of adverse environmental effects. This indirect drainage is a method in which a drainage path is once opened to the atmosphere to prevent backflow of drainage due to sanitary problems, and then drained along a drainage path to a drainage facility. Various indirect drainage joints are used to indirectly drain the drainage from the equipment into the drainage pipe.

  For example, Patent Document 1 discloses an indirect drainage device (10) having a drainage receptacle (16) having a sealed water portion (26) and a pan (18) attached to an upper end opening of the drainage receptacle (16). To do. A first screw part (22) is formed at the upper end of the drainage receptacle (16). On the other hand, a second screw portion (36) that is screwed with the first screw portion (22) is formed at the lower end of the side surface (32) of the eye plate (18). By screwing the second screw portion (36) into the first screw portion (22), the eye plate (18) is fixedly attached to the upper end of the drainage receptacle (16). Further, in the indirect drainage device (10), the upper surface (34) and the side surface (32) of the eye plate (18) are formed in a mesh shape and include many pores (32a, 34a). Due to the pores (32a, 34a), the eye plate (18) is used as a foreign matter intrusion prevention unit for preventing foreign matter such as gravel, pebbles, insects, and dust from entering the drainage receptacle (16). Then, the pipe (12) connected to the water heater (38) or the like abuts on the upper surface (34) of the eye plate (18) (or fits into the insertion portion (44)) and is supported at a predetermined height. Has been. Thereby, the drain outlet space which can discharge | emit the waste_water | drain which flowed back between the front-end | tip (12a) of piping (12) and the upper end of the drainage receptacle (16) is formed. In addition, the code | symbol of patent document 1 was shown in ().

JP 2007-182749 A

  As in the indirect drainage device of Patent Document 1 (hereinafter referred to as an indirect drainage joint), in the prior art, a cover body (mesh mesh) for preventing insects and dust is provided at the spout for discharging the backflow drainage of the indirect drainage joint. Is provided. This type of cover body has the possibility of clogging the pores of the cover body due to the accumulation of dirt and dust that has prevented entry into the indirect drainage joint, leading to poor discharge of backflow drainage. Regular maintenance such as cleaning is required. However, the indirect drainage joint of Patent Document 1 has a problem that since the cover body constitutes a part of the indirect drainage joint, its attachment and detachment is not easy, and maintenance (removal of clogged dust) takes time. It was. In particular, in Patent Document 1, since the eye plate supports the pipe and is fixed to the drain receiver, in order to remove the eye dish, the pipe must be lifted and the eye plate must be rotated with respect to the drain receiver. In addition, such desorption work is not easy. Furthermore, instead of integrally forming the cover body (pores) on the drainage joint, there is also one in which a mesh-like fiber body is attached to the water outlet. However, with such a sticking-type cover body, sticking after cleaning or replacement is not easy, and it is difficult to say that maintenance is easy.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide an indirect drainage joint having improved maintainability and a cover body for the indirect drainage joint.

The indirect drainage joint according to claim 1 is an indirect drainage joint installed in a drainage path in order to indirectly drain the drainage from the equipment to the drainpipe.
The inflow part that flows in the wastewater from the equipment, the receiving part that receives the drainage from the inflow part, the drainage part that communicates with the receiving part and discharges the wastewater to the drain pipe, and the inflow part and the receiving part are connected to the side A joint body provided with a peripheral wall portion that provides an opening and defines a drain space in the interior;
A cover body provided with a through hole formed so as to prevent discharge of foreign matter into the inside through the opening and capable of discharging the waste water flowing backward from the drain pipe,
The cover body is detachably attached to the peripheral wall portion from the side so as to cover the opening.

  The indirect drainage joint according to claim 2, in the indirect drainage joint according to claim 1, the cover body is provided with a detachable opening that is divided in the circumferential direction to open sideways and elastically expand, It is characterized in that passage of the peripheral wall portion is allowed in a state where the detachable opening is expanded.

  The indirect drainage joint according to claim 3 is the indirect drainage joint according to claim 1 or 2, wherein the cover body includes a louver part composed of a plurality of blade parts arranged side by side in the vertical direction. A through hole is defined between the blades, and the blade has an inclined surface inclined so that the outer edge is lowered.

  The indirect drainage joint according to claim 4 is the indirect drainage joint according to any one of claims 1 to 3, wherein the cover body is transparent or translucent to such an extent that the internal state is visible. It is characterized by.

The cover body according to claim 5 includes an inflow portion for inflowing wastewater from the device, a receiving portion for receiving wastewater from the inflow portion, a drainage portion communicating with the receiving portion and discharging the wastewater to the drain pipe, and an inflow portion. A cover body that is attached to a joint body for indirect drainage that includes a peripheral wall portion that defines an outlet space inside by providing an opening on the side and connecting the receiving portion to the side,
It is equipped with a through-hole formed so that foreign matter can be prevented from entering through the opening and drained backflow from the drainpipe can be discharged, and is removable from the side to the peripheral wall so as to cover the opening. And

  The cover body according to claim 6 is the cover body according to claim 5, further comprising a detachable opening that is divided in the circumferential direction to open to the side and that can be elastically expanded, and the detachable opening is expanded. In this state, the passage of the peripheral wall portion is allowed.

  The cover body according to claim 7 is the cover body according to claim 5 or 6, further comprising a louver portion including a plurality of blade portions arranged side by side vertically, and a through hole is provided between the plurality of blade portions. The blade portion is defined and has an inclined surface inclined so that the outer edge is lowered.

  The cover body according to claim 8 is characterized in that in the cover body according to any one of claims 5 to 7, the cover body is transparent or translucent so that the internal state is visible.

  According to the indirect drainage joint according to claim 1, foreign matter such as dust and insects entering the inside through the opening of the joint body is trapped by the through hole of the cover body, and the foreign matter is trapped inside the indirect drainage joint. Prevent intrusion. On the other hand, the cover body is configured to discharge the drained water flowing backward from the drain pipe through the through hole covering the opening. The cover body is detachably mounted from the side with respect to the peripheral wall portion and covers the opening. That is, since the cover body is configured to be detachable from the side wall of the joint body from the side, only the cover body can be removed without changing the installation state or installation position of the joint body in the drainage path during maintenance. It can be easily attached and detached from the joint body. Therefore, after the installation of the indirect drainage joint, if foreign matter accumulates in the through-holes over time, only the cover body can be easily removed for maintenance. And after a maintenance, a cover body can be easily attached to a coupling main body so that an opening part may be covered. Therefore, the present invention provides an indirect drainage joint having higher maintainability.

  According to the indirect drainage joint of the second aspect, in addition to the effect of the invention of the first aspect, the cover body can be simplified with respect to the peripheral wall portion through the attachment / detachment opening by elastically expanding the attachment / detachment opening. It can be detached from the side. That is, the cover body can be easily and quickly attached to and detached from the peripheral wall portion by a simple operation of elastically deforming the cover body.

  According to the indirect drainage joint of the third aspect, in addition to the effect of the invention of the first or second aspect, the inclined surface of the blade portion defining the through hole is inclined so that the outer edge is lowered. Accumulation can be suppressed and the risk of clogging the through holes can be effectively reduced.

  According to the indirect drainage joint of the fourth aspect, in addition to the invention of any one of the first to third aspects, the internal state of the indirect drainage joint can be visually recognized from the outside through the transparent or translucent cover body. . Thereby, even if it is in the state which attached the cover body, it can recognize that this joint is for indirect drainage, and the situation inside a joint main part can also be checked.

  According to the cover body of the fifth aspect, foreign matter such as dust and insects entering the inside through the opening of the joint body is trapped by the through hole of the cover body, and the foreign matter is trapped inside the indirect drainage joint. Prevent intrusion. On the other hand, the cover body is configured to discharge the drained water flowing backward from the drain pipe through the through hole covering the opening. And the cover body is comprised so that attachment or detachment is possible from the side with respect to a surrounding wall part so that an opening part may be covered. That is, at the time of maintenance of the cover body, only the cover body can be easily detached from the joint body without changing the installation state or the installation position of the joint body in the drainage path. Therefore, after the installation of the indirect drainage joint, if foreign matter accumulates in the through-holes over time, only the cover body can be easily removed for maintenance. And after a maintenance, a cover body can be easily attached to a coupling main body so that an opening part may be covered. Therefore, this invention provides the cover body for the indirect drainage joint which has higher maintainability.

  According to the cover body of the sixth aspect, in addition to the invention of the fifth aspect, the cover body can be easily laterally formed with respect to the peripheral wall portion through the attachment / detachment opening by elastically expanding the attachment / detachment opening. It is possible to detach from. That is, the cover body can be easily and quickly attached to and detached from the peripheral wall portion by a simple operation of elastically deforming the cover body.

  According to the cover of the seventh aspect, in addition to the effect of the invention of the fifth or sixth aspect, the inclined surface of the blade portion defining the through hole is inclined so that the outer edge is lowered, so that dust accumulation is achieved. And the possibility of clogging the through holes can be effectively reduced.

  According to the indirect drainage joint of claim 8, in addition to the invention of any one of claims 5 to 7, the internal state of the indirect drainage joint can be visually recognized from the outside through a transparent or translucent cover body. . Thereby, even if it is in the state where the cover body was attached, it can recognize that a joint main part is for indirect drainage, and the situation inside a joint main part can also be checked.

BRIEF DESCRIPTION OF THE DRAWINGS (a) The schematic perspective view seen from upper direction of the indirect drainage coupling of one Embodiment which concerns on this invention, (b) The schematic perspective view seen from the downward direction. The (a) front view of the indirect drainage joint of Drawing 1, (b) side view, (c) top view, and (d) bottom view. (A) The schematic perspective view seen from upper direction of the joint main body of the indirect drainage joint of FIG. 1, (b) The schematic perspective view seen from the downward direction. 4A is a front view, FIG. 3B is a side view, FIG. 3C is a plan view, and FIG. 4D is a bottom view. (A) AA sectional view and (b) BB sectional view of the joint main part of FIG. The disassembled perspective view of the coupling main body of FIG. (A) The schematic perspective view seen from upper direction of the cover body of the indirect drainage joint of FIG. 1, (b) The schematic perspective view seen from the downward direction. 7A is a front view, FIG. 7B is a side view, FIG. 7C is a plan view, and FIG. 8D is a plan view in an elastically deformed state. CC sectional drawing of the cover body of FIG. Schematic of the apparatus installation structure of one Embodiment of this invention. FIG. 11 is a partially exploded perspective view of the device installation structure of FIG. 10. The elements on larger scale of the apparatus installation structure of FIG. In the apparatus installation structure of FIG. 10, the schematic diagram which showed the form by which the waste_water | drain from an apparatus is drained via an indirect drainage joint. In the apparatus installation structure of FIG. 10, the schematic diagram which showed the form from which the waste_water | drain which flowed back from the drain pipe is discharged | emitted from the drain outlet space of an indirect drainage joint. The figure which shows the cover body of the indirect drainage joint of another embodiment (modification) which concerns on this invention. The figure which shows the cover body of the indirect drainage joint of another embodiment (modification) which concerns on this invention. The figure which shows the cover body of the indirect drainage joint of another embodiment (modification) which concerns on this invention. The figure which shows the coupling main body of the indirect drainage joint of another embodiment (modification) which concerns on this invention.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In addition, the shape of each figure referred in the following description is a conceptual diagram or a schematic diagram for explaining a suitable shape dimension, and a dimension ratio etc. do not necessarily correspond with an actual dimension ratio. That is, the present invention is not limited to the dimensional ratio in the drawings.

  The indirect drainage joint 100 of the present embodiment is directly or indirectly connected to the drainage discharge part 11a of the device 11 that is a latent heat recovery type gas water heater, and drainage generated from the device 11 is connected to the drain pipe 13. Used for indirect drainage.

  1A and 1B are schematic perspective views of an indirect drainage joint 100 of the present embodiment. 2A to 2D are a front view, a side view, a plan view, and a bottom view of the indirect drainage joint 100. FIG. As shown in FIGS. 1 and 2, the indirect drainage joint 100 includes a joint main body 110 installed between the device 11 and the drain pipe 13, and the joint main body 110 for restricting foreign matter intrusion into the joint main body 110. And a cover body 120 attached to the. The “foreign matter” means something that may clog the drain pipe 13 or the indirect drain joint 100 such as dust, dust, and insects, and is not limited to a specific target.

  First, with reference to FIG. 3 thru | or FIG. 6, the structure of the coupling main body 110 of this embodiment is demonstrated. FIGS. 3A and 3B are schematic perspective views of the joint body 110. FIG. 4A to 4D are a front view, a side view, a plan view, and a bottom view of the joint main body 110, respectively. 5A and 5B are an AA cross-sectional view and a BB cross-sectional view of the joint main body 110, respectively. FIG. 6 is an exploded perspective view of the joint body 110.

  The joint main body 110 of the present embodiment is a hollow cylindrical body that extends in the axial direction. As shown in FIG. 3, the joint main body 110 includes an inflow portion 111 into which the waste water from the device 11 flows in, a flowing water cylinder portion 112 communicating with the inflow portion 111, and a lower end of the inflow portion 111. A peripheral wall portion 113 connected to the lower end of the peripheral wall portion 113, a receiving portion 116 connected to the lower end of the peripheral wall portion 113 for receiving the drainage discharged from the flowing water cylinder portion 112, and a communication with the receiving portion 116 to discharge the drainage to the drainage pipe 13. And a drainage part 117 for carrying out. The inflow portion 111, the flowing water cylinder portion 112, the receiving portion 116, and the drainage portion 117 are arranged concentrically with each other.

  As shown in FIG. 4, the inflow portion 111 has a cylindrical shape. At the upper end (one end) of the inflow portion 111, an upstream side connection port 111a is formed as an inflow port through which the waste water from the device 11 flows, and the discharge portion 11a of the device 11 directly connects to the upstream side connection port 111a. Or indirectly connected. In the present embodiment, the upstream connection port 111a is connected to the discharge part 11a via the joint 12 (see FIG. 11). The size of the upstream connection port 111a is arbitrarily determined. Further, an annular flange 111b is formed on the lower end side of the inflow portion 111 so as to protrude. A peripheral wall 113 extends downward from the lower surface of the flange 111b.

  The flowing water cylinder portion 112 is a straight cylindrical body integrally connected to the lower end side of the inflow portion 111. The flowing water cylinder portion 112 is reduced in diameter from the lower end of the cylindrical inflow portion 111 and extends downward. A circular water passage 112 a is opened at the upper end of the water flow tube portion 112 and communicates with the upstream connection port 111 a of the inflow portion 111. Furthermore, an outlet 112b that allows the drainage from the upstream side connection port 111a to flow downward through the water port 112a is opened at the lower end of the water flow tube portion 112. The outlet 112b has a circular shape having a radius r1. Moreover, the flowing water cylinder part 112 is extended | stretched by predetermined length so that it may adjoin to the receiving part 116 inside the surrounding wall part 113. FIG. In other words, the outflow port 112 b at the lower end of the water flow tube portion 112 is separated from the receiving portion 116 by a predetermined distance d.

  The peripheral wall portion 113 is formed in a cylindrical shape extending in the axial direction, and connects the lower portion of the inflow portion 111 and the upper portion of the receiving portion 116. More specifically, it extends downward from the lower surface of the flange 111b of the inflow portion 111 and is integrally connected to the edge surface of the receiving port 116a of the receiving portion 116. A plurality (two in this embodiment) of openings 114 are formed on the side of the peripheral wall 113 so as to open the drainage path to the atmosphere. Thereby, the drainage space 115 is defined inside the peripheral wall portion 113. And the flowing water cylinder part 112 is extended | stretched to the axial direction inside the drain outlet space 115 so that the surrounding wall part 113 may be inserted. The opening 114 is formed in a rectangular shape on both the front surface and the back surface, and the peripheral wall 113 is notched from the upper end to the lower end. That is, the opening 114 opens from the base end (or lower end of the inflow portion 111) to the upper end of the receiving portion 116. Thereby, the opening 114 opens from the receiving port 116a to the upper side of the outlet 112b, and at least a part of the outer surface of the flowing water cylinder portion 112 is exposed to the side from the opening 114 together with the outlet 112b. In this embodiment, since the ratio of the opening part 114 is larger than the ratio of the flesh part of the peripheral wall part 113, the peripheral wall part 113 may be interpreted as a connection part or a connection wall.

  The receiving part 116 is arrange | positioned under the surrounding wall part 113, and is comprised by the cup shape so that the waste_water | drain from the outflow port 112b may be received. More specifically, the receiving portion 116 is formed in a short cylindrical shape on the upper side and is reduced in diameter in a tapered shape on the lower side. At the upper end of the receiving portion 116, a receiving opening 116a that is opened upward in a circular shape is provided. The inner diameter (radius r2) of the receiving port 116a is larger than the inner diameter (radius r1) of the outlet 112b. Moreover, the receiving port 116a and the outflow port 112b are separated by a predetermined distance d. In addition, since the peripheral wall part 113 and the receiving part 116 are integrally connected continuously, the boundary of both can be interpreted suitably, but in this embodiment, the lower edge receiving part 116 of the opening part 114 is provided. The peripheral edge of the receiving port 116a.

  The drainage portion 117 is integrally connected to the lower end of the tapered portion of the receiving portion 116. The drainage part 117 communicates with the receiving part 116 and functions to discharge the wastewater flowing from the receiving part 116 from the joint body 110 to the drainage facility. The drainage part 117 is a cylindrical body having a diameter smaller than that of the receiving part 116, and has a downstream connection port 117a at the lower end thereof. The joint main body 110 is connected to the connection portion 13 a of the drain pipe 13 through the downstream connection port 117 a.

  As shown in FIG. 6, the joint body 110 is configured by joining an upper member 110a and a lower member 110b. An inflow portion 111 and a flange 111b are integrally formed on the upper member 110a. A peripheral wall portion 113, a receiving portion 116, and a drainage portion 117 are integrally formed on the lower member 110b. The engaging claw 111c near the lower end of the inflow portion 111 of the upper member 110a engages with the engaging hole 113a drilled near the upper end of the peripheral wall 113, and the upper end edge of the peripheral wall 113 contacts the lower surface of the flange 111b. The upper member 110a and the lower member 110b are joined. These members may be joined by fitting, or may be integrally bonded with an adhesive or the like. That is, since the joint main body 110 can be configured integrally, it has a simple configuration.

  In the present embodiment, the joint main body 110 is produced by molding from a synthetic resin. However, this invention is not limited to this, You may form a coupling main body with other raw materials, such as a metal and glass. Further, in the present embodiment, the upper member 110a and the lower member 110b as separate bodies are combined, but the entire joint body may be integrally formed.

  Next, the structure of the cover body 120 of this embodiment is demonstrated with reference to FIG. 7 thru | or FIG. 7A and 7B are schematic perspective views of the cover body 120. FIG. FIGS. 8A to 8C are a front view, a side view, and a plan view of the cover body 120. FIG. 8D is a plan view showing a state in which the cover body 120 is elastically deformed. FIG. 9 is a cross-sectional view of the cover body 120.

  As shown in FIGS. 7 and 8, the cover body 120 is formed in a thin cylindrical shape having a C-shape in a plan view (transverse section). In other words, the cover body 120 is a thin band-like body that curves while drawing an arc until both ends thereof are close to each other. The thin strip can be elastically deformed like a leaf spring.

  The cover body 120 includes a substantially cylindrical wall 121 that is cut along the axial direction. The wall portion 121 has a shape corresponding to the peripheral wall portion 113 of the joint body 110. More specifically, the height of the wall 121 substantially matches the height of the peripheral wall 113, and the inner diameter of the wall 121 substantially matches the outer diameter of the peripheral wall 113. That is, the cover body 120 is configured in a shape that can be fitted to the peripheral wall portion 113 of the joint body 110.

  Further, the wall portion 121 of the cover body 120 is provided with a louver portion 122 extending to a predetermined region so as to form a through-hole region having a predetermined size. The louver portion 122 has a rectangular shape in a state where the louver portion 122 is developed on a plane. Further, the louver part 122 is formed at two positions of the wall part 121 that are substantially opposed to each other. The position of the louver part 122 corresponds to the position of the opening part 114 of the peripheral wall part 113, and the height and width of the louver part 122 correspond to the height and width of the opening part 114. That is, as shown in FIGS. 1 and 2, each louver portion 122 is configured to cover the entire opening 114 in a state where the cover body 120 is attached to the joint body 110.

  The louver part 122 is composed of a plurality of blade parts 123 arranged vertically. The some blade | wing part 123 is extended in parallel along the circumferential direction mutually. As shown in FIG. 9, each blade 123 has a substantially right-angled triangular cross section, and has an inclined surface 123 a that is inclined so that its outer edge is lowered. A gap between adjacent blade portions 123 is defined as a through hole 124. That is, the louver part 122 is a through hole region including a plurality of through holes 124. Each through-hole 124 is a narrow slit extending in the circumferential direction, and is formed with a width that suppresses (prevents) the passage of foreign matter such as dust and insects. In the present embodiment, the width w of the through hole 124 is set to about 1 mm, but is arbitrarily determined according to the foreign object to be prevented from entering.

  Further, the cut (in the axial direction) of the wall 121 of the cover body 120 is defined as an attachment / detachment opening 125. That is, the attachment / detachment opening 125 is divided in the circumferential direction of the cover body 120 and opened to the side. In other words, a part of the wall portion 121 in the circumferential direction is cut (or divided). In the original form of the cover body 120, the opening width of the attachment / detachment opening 125 is smaller than the outer diameter of the peripheral wall portion 113 of the joint body 110. And as shown in FIG.8 (d), when the wall part 121 of the cover body 120 elastically deforms, the attachment / detachment opening 125 can be expanded. The detachable opening 125 can expand at least to a width that allows the peripheral wall 113 to be received from the side. In other words, the opening width of the detachable opening 125 in the expanded state is larger than the outer diameter of the peripheral wall portion 113 of the joint body 110. That is, the cover body 120 is detachable from the side with respect to the peripheral wall 113 due to its elasticity.

  And the cover body 120 of this embodiment consists of a transparent or semi-transparent synthetic resin. This translucent means a certain degree of translucency through which the opposite side is visible through the wall 121 of the cover body 120. That is, when the cover body 120 is attached to the joint body 110, the inside of the joint body 110 can be visually recognized through the opening 114. However, the present invention is not limited to this, and the cover body may be formed of other elastically deformable materials such as metal.

  As described above, the cover body 120 is fitted to the peripheral wall portion 113 of the joint main body 110 from the side (along the radial direction of the peripheral wall portion 113) along with the elastic return via the attachment / detachment opening 125 expanded by elastic deformation. Thus, the indirect drainage joint 100 shown in FIGS. 1 and 2 is configured. As shown in FIGS. 1 and 2, in the indirect drainage joint 100, all (two) openings 114 of the joint body 110 are simultaneously covered with a louver part 122 that is a through-hole region of the cover body 120. That is, it is possible to attach the cover body 120 to the joint body 110 with one touch and take measures for foreign matter intrusion over the plurality of openings 114. For example, in order to remove the cover body 120 from the joint body 110 during maintenance, the cover body 120 can be easily separated by elastically deforming so as to open the attachment / detachment opening 125 of the cover body 120.

  Next, the configuration of the device installation structure 10 for indirectly draining drain drainage from the device 11 to the drainage pipe 13 through the indirect drainage joint 100 of the present embodiment will be described with reference to FIGS. 10 to 12. FIG. 10 is an overall view schematically showing the device installation structure 10. FIG. 11 is an exploded perspective view of the device installation structure 10. FIG. 12 is a partial cross-sectional view of the device installation structure 10.

  The device installation structure 10 includes a device 11, an indirect drainage joint 100 connected upstream to the device 11, and a drain pipe 13 connected downstream of the indirect drainage joint 100. As shown in FIG. 10, in the device installation structure 10, the device 11 is fixed to the wall surface of the building. A cylindrical discharge portion 11a for discharging drainage drainage extends from the lower surface of the device 11 (see FIG. 11). A drain pipe 13 is installed below the device 11. That is, in the device installation structure 10, a drainage path is formed between the discharge part 11 a of the device 11 and the drainage pipe 13 for indirectly draining drainage from upstream to downstream.

  As shown in FIG. 11, a joint 12 is screwed to the discharge part 11 a, and a joint main body 110 is connected to the discharge part 11 a of the device 11 through the joint 12. More specifically, as shown in FIG. 12, the connection portion 12a of the joint 12 is fitted into the upstream connection port 111a of the joint body 110, so that the inflow portion 111 can allow the drainage to flow into the discharge portion 11a of the device 11. It is connected to the. In addition, in this invention, if the diameter of an upstream connection port and the diameter of an apparatus discharge part match, an indirect drainage joint may be directly connected to an apparatus, a joint being abbreviate | omitted. And the two opening parts 114 of the coupling main body 110 open to the front surface and the back surface, and the drainage path is opened to the external space through the opening parts 114. At this time, the water pipe portion 112 extends toward the receiving port 116a in the drain port space 115, the outflow port 112b and the receiving port 116a are separated by a distance d close to each other, and the outflow port 112b is exposed from the opening 114. Yes. In other words, the opening 114 is opened between the outflow port 112b and the receiving port 116a. Further, the cover body 120 is attached to the joint body 110 such that the inner surface of the wall part 121 of the cover body 120 contacts the outer surface of the peripheral wall part 113 of the joint body 110.

  And the joint main body 110 is connected to the drain pipe 13 in the downstream. More specifically, as shown in FIG. 12, the connecting portion 13a of the drain pipe 13 is inserted into and connected to the downstream connection port 117a extending below the drain portion 117. The drain pipe 13 is composed of a sub drain pipe extending vertically and horizontally below the device 11 and a main drain pipe extending vertically to drain water from the sub drain pipe into the drainage facility. Therefore, in the present device installation structure 10, drainage drainage generated from the device 11 is indirectly drained into the drainage pipe 13 (drainage facility) through the joint body 110.

  FIG. 13 shows a form in which the waste water from the device 11 is drained through the joint body 110, and FIG. 14 shows the drain outlet space of the joint body 110 in which the waste water flowing backward from the drain pipe 13 in the equipment installation structure 10. The form discharged from 115 is shown.

  As shown in FIGS. 13 and 14, the louver portion 122 of the cover body 120 is disposed outside the opening 114 of the joint body 110. The louver part 122 covers the entire opening part 114 so as to enable the discharge of the waste water flowing back through the opening part 114. That is, the internal space and the external space of the joint body 110 are separated or separated by the louver portion 122. The plurality of through holes 124 are arranged so as to cover the entire plurality of openings 114. The width of each through hole 124 formed in the louver portion 122 is sufficiently small to restrict the passage of dust and insects (1 mm in this embodiment). Thereby, in this apparatus installation structure 10, dust and insects are prevented from entering the inside of the joint body 110 beyond the louver part 122. In the case of the elongated slit-shaped through-hole 124 as in this embodiment, the short width w may be as small as possible, but is preferably about 3 mm or less. If it is the width | variety of this range, the penetration | invasion of most garbage and insects of the magnitude | size which causes the joint main body 110 and the drain pipe 13 to be blocked can be prevented.

  Moreover, the inclined surface 123a of each blade part 123 of the louver part 122 is inclined downward as it goes outward. And when the inclined surface 123a faces to the side, the lateral exposure of the through hole 124 is substantially reduced. In particular, when the louver part 122 is viewed from above (diagonally above), only the inclined surface 123a of the blade part 123 is visible, and the through hole 124 is hardly visually recognized. That is, the apparent area of the through-hole 124 is substantially reduced, but the actual area is not changed, so that a higher foreign matter intrusion preventing effect is exerted without substantially affecting the amount of discharged discharged water.

  As shown in FIG. 13, when the discharge amount and momentum of the drainage water from the device 11 are strong, the outflow port 112 b of the water flow tube portion 112 becomes splashed water, swells or scatters outward in the radial direction and flows out. Sometimes. In the joint main body 110 of the present embodiment, the flowing water cylinder portion 112 is close to the receiving portion 116 in the drain port space 115, and the outflow port 112b is opposed to the receiving port 116a. The central axis of the outlet 112b faces the center of the larger diameter receiving port 116a. Thereby, the waste water flowing out from the outflow port 112 b is stably guided to the receiving portion 116 without being scattered outside the opening 114. In general, in order to prevent the waste water falling from the outlet 112b from being scattered outside the opening 114, the distance d between the outlet 112b of the outlet cylinder 112 and the outlet 116a of the receiver 116 is the outlet space. It is preferable that the height is 115 or less of the height of 115 (the distance between the base end of the flowing water cylinder portion 112 and the upper end of the receiving portion 116).

  As shown in FIG. 14, when the backflowed drainage rises upstream via the discharge part 107, the receiving part 116 is filled with drainage, and the drainage overflows from the receiving port 116 a via the opening 114. At this time, the waste water that has flowed back through the through hole 124 of the louver part 122 covering the opening 114 is discharged to the outside. Drainage passes through the lowermost through holes 124 in order according to the water pressure of the wastewater flowing back. In the case of reverse flow drainage with relatively low water pressure, all drainage can be discharged from the lowermost through hole 124. In such a case, since the lower edge of the lowermost through hole 124 and the opening edge of the receiving port 114 are at the same height, and the through hole 124 extends over the entire width of the opening 114, the cover The amount of water discharged due to the body 120 does not decrease. On the other hand, in the case of reverse flow drainage with a relatively strong water pressure, the water level rises beyond the lowest through-hole 124, but the drainage can be discharged from below through the plurality of through-holes 124. Since these through holes 124 are arranged in parallel over the entire height direction of the opening 114, a desired water discharge amount is sufficiently maintained.

  Further, the cover body 120 of the present embodiment is formed to be slidable in the circumferential direction of the peripheral wall portion 113. Although not shown, the cover body 120 is shifted in the circumferential direction from the state of FIGS. 13 and 14, the removable opening 125 is disposed in the opening 114, and the opening amount of the opening 114 is increased, thereby increasing the water discharge amount. be able to. The said form can be selected according to a situation, for example, when the water pressure of the waste_water | drain which flows backward is high and attaches importance to the amount of discharged water.

  Hereinafter, the effect in the indirect drainage joint 100 (and cover body 120) of one Embodiment which concerns on this invention is demonstrated.

  According to the indirect drainage joint 100 of the present embodiment, dust and insects that try to enter the inside through the opening 114 of the joint body 110 by the through hole region (the plurality of through holes 124) provided in the cover body 120. Are trapped to prevent foreign matter from entering the indirect drainage joint 1000. On the other hand, the cover body 120 is configured to discharge the drained water flowing backward from the drain pipe 13 through the through hole 124 that covers the opening 114. The cover body 120 is detachably attached to the peripheral wall portion 113 from the side and covers the opening 114. In particular, the cover body 120 can be easily attached to and detached from the peripheral wall portion 113 through the attachment / detachment opening 125 by elastically expanding the attachment / detachment opening 125. Thus, the cover body 120 can be easily and quickly attached to and detached from the peripheral wall portion 113 by a simple operation of elastically deforming the cover body 120. That is, since the cover body 120 is configured to be detachable from the side wall 113 of the joint body 110 from the side, without changing the installation state or installation position of the joint body 110 in the drainage path during maintenance, Only the cover body 120 can be easily detached from the joint body 110. Therefore, after the installation of the indirect drainage joint 100, if foreign matter accumulates in the through holes 124 over time, only the cover body 120 can be easily removed for maintenance. After the maintenance, the cover body 120 can be easily attached to the joint body 110 so as to cover the opening 114.

  Furthermore, according to the indirect drainage joint 100 of the present embodiment, the plurality of slit-shaped through holes 124 are defined by the louver part 122 having the blade part 123 whose outer edge is inclined downward, so that foreign matter is accumulated or invaded. Can be effectively prevented, and the frequency of maintenance of the cover body 120 can be reduced. In particular, the inclined surface 123a of each blade part 123 of the louver part 122 is inclined downward as it goes outward. First, dirt and dust are likely to fall down and outward along the inclined surface 123a, so that foreign matter is unlikely to accumulate on the blade portion 123. As a result, dust and insects are effectively prevented from accumulating on the louver portion 122 and closing the through hole 124. Second, since the inclined surface 123a faces to the side, substantial exposure of the through hole 124 to the outside is reduced. More specifically, the exposure of the through holes 124 from above (obliquely) can be almost eliminated. In general, since insects and dust often enter the joint main body 110 from above, the apparent area of the through hole 124 is substantially reduced, and foreign matters such as dust and insects enter the joint main body 110. Is effectively suppressed. Third, since the inclined surface 123 a is inclined so that the outer edge thereof is lowered, the drained water that has flowed back is guided so as to flow down along the inclined surface 123. That is, the indirect drainage joint 100 can exert a high foreign matter intrusion and accumulation preventing effect with little effect on the amount of discharged discharged water.

  Therefore, the present invention provides an indirect drainage joint having higher maintainability.

[Modification]
The present invention is not limited to the above embodiment, and various embodiments and modifications can be taken. Hereinafter, a plurality of modifications of the present invention will be described. In each embodiment, components having the same last two digits have the same or similar characteristics unless otherwise specified, and a part of the description is omitted.

(1) As for the form of the through-hole of the cover body of this embodiment, this invention is not limited to the said embodiment. For example, as shown in FIG. 15, the shape of the opening provided in the peripheral wall may be changed. Like the cover body 220, the plurality of through holes 224 may be defined by a lattice. Further, like the cover body 320, the plurality of through holes 324 may be formed in a polka dot shape. Further, like the cover body 420, a slit-like through hole 424 may be formed over the entire wall portion 421.

(2) Although the cover body of this embodiment is configured to be elastically deformable, the present invention is not limited to the above embodiment. For example, like the cover body 500 shown in FIG. 16, the detachable opening 525 may be configured to be openable and closable by the hinge portion 527 and the lock portion 528. In other words, the detachable opening 525 is opened so as to separate the two pieces of the wall portion 521 of the cover body 520 and the peripheral wall portion 113 is disposed between the wall portions 521, and then the detachable opening 525 is closed and locked by the lock portion 528. By doing so, the cover body 520 can be attached to the joint body 110.

(3) In the indirect drainage joint of the above embodiment, the blade portion of the louver portion that defines the through hole has a substantially triangular cross-sectional shape, but the blade portion may be configured in a thin plate shape. In this case, although the strength of the louver portion is reduced, the actual area of the through hole can be made wider than the apparent area. That is, it is possible to reduce the apparent exposure not only to the upper side but also to the side of the through hole, and to exhibit a higher foreign matter preventing effect with the same size of the through hole.

(4) You may comprise the cover body and joint main body of the indirect drainage joint of the said embodiment so that engagement in the circumferential direction is possible. For example, as shown in the cover body 620 in FIG. 17, the engagement protrusion 626 is provided on the inner surface of the wall portion 621 so that the engagement protrusion 626 is engaged with the opening end face of the joint body, and the cover body 620 is attached. Position guidance can be performed. In FIG. 17, the engagement protrusions 626 are formed so as to protrude from one end of the louver portion 622 in the circumferential direction. Since both the engaging projections 626 are formed at the end portions of the louver portion 622 that are close to each other, the cover body 620 is arranged so that the engaging projection 626 sandwiches the wall portion between the openings from the circumferential direction at the time of mounting. Mounted on the joint body.

(5) The joint main body of this invention is not limited to the shape of the said embodiment. For example, as shown in FIGS. 18A to 18C, the shape and number of openings provided in the peripheral wall may be changed. The joint main body 210 in FIG. 18A includes one opening 214, and the opening 214 extends to about half of the outer periphery of the peripheral wall 213. The joint main body 310 in FIG. 18B includes a peripheral wall portion 313 made of a grid-like meat portion extending vertically and horizontally, and defines a plurality of openings 314. In the joint main body 410 of FIG. 18C, openings 414 having different triangles, rhombuses, and pupil shapes are formed in the peripheral wall 413. Thus, a person skilled in the art can arbitrarily design the number, position, and shape of the openings in the peripheral wall.

(6) Although the indirect drainage joint of the said embodiment is comprised by the cylindrical shape extended in an axial direction, this invention is not limited to this. For example, the indirect drainage joint may have a polygonal cross section, an ellipse, or an oval shape as long as it can be indirectly or directly connected to the device and the drain pipe.

(7) Although each site | part is comprised linearly in the axial direction as for the indirect drainage joint of the said embodiment, this invention is not limited to this. For example, it may be refracted or bent according to the position of the equipment or drain pipe to which the inflow part and the drain part are connected. Further, in the present invention, the flowing water cylinder portion may be omitted.

  The present invention is not limited to the above-described embodiments and modifications, and can be implemented in various modes as long as they belong to the technical scope of the present invention.

DESCRIPTION OF SYMBOLS 10 Equipment installation structure 11 Equipment 11a Discharge part 12 Joint 12a Connection part 13 Drain pipe 13a Connection part 100 Indirect drainage joint 110 Joint main body 111 Inflow part 111a Upstream side connection port 112 Flow channel part 112a Water flow port 112b Outlet 113 Circumferential wall part 113a Joint hole 114 Opening portion 115 Drainage port space 116 Receiving portion 116a Receiving portion 117 Drainage portion 117a Downstream connection port 120 Cover body 121 Wall portion 122 Louver portion 123 Blade portion 123a Inclined surface 124 Through hole 125 Removable opening d Outlet and receiving port Distance w Through hole width

Claims (8)

An indirect drainage joint installed in the drainage path to indirectly drain the drainage from the equipment to the drainpipe,
An inflow portion for inflowing wastewater from the device, a receiving portion for receiving wastewater from the inflow portion, a drainage portion communicating with the receiving portion to discharge wastewater to the drainage pipe, and the inflow portion and the receiving portion A joint body provided with a peripheral wall portion that defines an outlet space inside by providing an opening on the side,
A cover body provided with a through hole formed so as to prevent the intrusion of foreign matter into the inside through the opening and capable of discharging the drained water flowing backward from the drain pipe,
The indirect drainage joint, wherein the cover body is detachably attached to the peripheral wall portion from the side so as to cover the opening.   The cover body is provided with a detachable opening that is divided in the circumferential direction to open to the side and that can be elastically expanded, and is allowed to pass through the peripheral wall portion in a state in which the detachable opening is expanded. The indirect drainage joint according to claim 1.   The cover body includes a louver portion including a plurality of blade portions arranged in parallel vertically, the through hole is defined between the plurality of blade portions, and the blade portion is inclined so that an outer edge is lowered. The indirect drainage joint according to claim 1, wherein the joint has a surface.   The indirect drainage joint according to any one of claims 1 to 3, wherein the cover body is transparent or translucent to such an extent that the internal state is visible. An inflow portion for receiving wastewater from the device, a receiving portion for receiving wastewater from the inflow portion, a drainage portion communicating with the receiving portion for discharging wastewater to the drainage pipe, and the inflow portion and the receiving portion. A cover body that is connected to a joint body for indirect drainage that includes a peripheral wall portion that is connected and has an opening on the side to define a drain outlet space inside,
It has a through hole formed so that foreign matter can be prevented from entering through the opening, and drained water flowing back from the drain pipe can be discharged, and can be attached to and detached from the side of the peripheral wall so as to cover the opening. A cover body characterized by being.   6. A detachable opening that is divided in the circumferential direction to open laterally and elastically expands, and further allows passage of the peripheral wall portion in a state where the detachable opening is expanded. The cover body described in 1.   It further includes a louver portion composed of a plurality of blade portions arranged in parallel vertically, the through hole is defined between the plurality of blade portions, and the blade portion has an inclined surface inclined so that an outer edge is lowered. The cover body according to claim 5 or 6, wherein the cover body is provided.   The cover body according to any one of claims 5 to 7, wherein the cover body is transparent or translucent so that the internal state is visible.

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