JP5528185B2 - Fitting means applied to drainage trough - Google Patents

Description

  The present invention includes a water seal elbow for deodorization, an elbow with a backflow prevention valve for backflow prevention, an orifice for adjusting flow rate, or a filter for removing foreign matter, and a device attached to the inside of the drainage and the outside. With regard to the fitting means to be attached to the above-mentioned pipe to connect the drain pipe to the fluid communication, in particular, the fitting connection outlet of the joint means has a double pipe structure and the attachment to the drain pipe is provided on the outer circumference of the double pipe. The present invention relates to a joint means that realizes a space-saving and high-seal that can be mounted in a liquid-tight manner while suppressing protrusion from an inner wall surface with respect to a resin drainage drain having a thin-walled side wall, etc. by performing with a flange wall. In the present specification, the term “drainage mass” is used as a general term for a general resin mass or intermediate mass including sewage, storm water, traps, and the like.

  The drainage basin may be equipped with a device such as an elbow for water sealing, an elbow with a backflow prevention valve, an orifice or a filter for the purpose of deodorization, backflow prevention, flow rate adjustment or removal of foreign matter. Since these instruments need to be in fluid communication with the external drain pipe, they are usually attached to the drain side or the inside of the opening provided on the side wall of the vertical pipe or the inside of the receiving port. In addition, since it is necessary to periodically inspect and clean the drainage, these instruments are usually detachably attached.

  As a connecting means for attaching an instrument such as a water seal elbow, an elbow with a backflow prevention valve, an orifice, or a filter in a drain, it is described in, for example, Patent Document 1 (Japanese Patent Laid-Open No. 10-18405). As described above, there is known a means for attaching an outflow pipe to a through-hole opened in a side wall of a drainage basin and mounting an instrument such as a backflow prevention device using an end portion (differential port) of the outflow pipe.

  However, this type of connecting means requires that the end (outlet) of the outflow pipe protrudes into the drainage drain as a connection allowance, so that the remaining space for mounting the equipment becomes small and relatively large. There was a problem that internal instruments could not be connected or could not be applied to small-diameter drainage.

  In addition, in the case of the connection means as described in Patent Document 1, the outflow pipe cannot be attached unless it is drained with a side wall having a certain thickness or more, such as a concrete drain. There is a problem that it cannot be applied to a drainage basin having a thin side wall such as a resin drainage basin. Furthermore, the attachment of the outflow pipe using the thickness of the side wall requires that a through hole sufficiently larger than the outflow pipe be opened in advance in the side wall. Even if it is injected and fixed, there is a problem that high sealing performance cannot be obtained between the outflow pipe and the side wall, and workability is also poor.

  Therefore, in recent years, a dedicated connection space has been prepared in order to save space and increase the sealing of the connection means between a water sealing elbow and a drainage basin. A drainage basin equipped with a drainage basin or a connection means using a drainage basin has been developed.

  For example, in Patent Document 2 (Japanese Utility Model Laid-Open No. 60-80188), a drainage with a trap that secures a connection space with an internal device such as a turning pipe by bulging a body wall portion of the drainage to the outside. It has been disclosed.

  However, since this type of drainage drain must be prepared with a dedicated trap drainage with the body wall bulging outward, there is a problem that the overall size of the drainage increases and its manufacturing cost becomes extremely high. there were.

  Patent Document 3 (Japanese Patent Laid-Open No. 9-242174) discloses a reservoir with an elbow type trap provided with a dedicated connection means instead of the opening. This type of connection means is provided with a flange on the outer peripheral surface of the connection end of the water sealing elbow, and is used for water sealing by inserting and removing it into the pocket formed on the inner peripheral surface of the flange. The elbow can be connected to the outlet, and the protrusion to the inside is suppressed.

  However, the connection means described in Patent Document 3 must prepare a dedicated reservoir in which a pocket for attaching an instrument such as a water seal elbow is prepared. Since a flange-like flange has to be provided, there are problems that the storage cost and the manufacturing cost of the device become extremely high. In addition, the appliance provided with the bowl-shaped flange has a disadvantage that it cannot be attached to another drain.

  In addition, this type of connection means is required to move the water-seal elbow up and down in the pocket, so that the water-seal elbow or the O-ring provided around the entire outlet of the reservoir There was also a problem that the sealing member could not be sufficiently pressed, and as a result, the sealing performance was lower than that of the structure in which the sealing member was directly attached to the outlet / receiving port.

  As other types of connection means, in Patent Documents 4 and 5 (Japanese Patent Laid-Open Nos. 7-259174 and 7-268945), a concentric and different diameter pipe fitting is attached to the trap receptacle. A trap with a water seal U-trap or elbow attached to the opening is disclosed. This type of connecting means has a mounting structure in which the outlet of concentric and different diameter pipe fittings extends from the receiving port to the inside of the trap, not from the inner wall surface, so the required length of the connecting port is maintained. The trap has a feature that the length of the protrusion to the inside can be suppressed. In addition, since the pipe joint can be attached in close contact with the trap receptacle by using a concentric and different diameter pipe structure, high sealing performance can be obtained between the pipe joint and the receptacle.

  However, since this type of connecting means is premised on attachment to a receiving port provided in advance on the side wall of the trap, a pipe line for eliminating the displacement of the connection position with the external drain pipe at the construction site. There is a problem that laying is necessary and the work load on the site increases. In addition, since most of the depth of the receptacle must be used for connection to the fitting, the remaining depth should be used to absorb all protrusions of the fitting's outlet into the receptacle. There was a problem that could not be placed.

  Further, as another type of connecting means, in Patent Document 6 (Japanese Patent Laid-Open No. 3-59226), a manhole pipe joint having a double pipe structure is attached to a through hole opened in a side wall of the manhole, A manhole pipe joint in which a pipe part in a manhole is joined to a connecting portion is disclosed. This type of connection means has a double pipe structure consisting of a small diameter cylinder part and a large diameter cylinder part as the structure of the connection part, and a connection end (receiving port) of piping parts in the manhole in a ring-shaped space formed between them By being able to be inserted and joined, while maintaining the function and necessary length as a pipe joint connecting portion, the connecting portion is driven to the outside of the manhole and the protrusion into the manhole is suppressed.

  However, in the case of the connecting means as described in Patent Document 6, the manhole pipe joint is a concrete manhole having a side wall having a certain thickness or more as with the outflow pipe described in Patent Document 1. Since it is designed on the assumption that it can be attached, there is a problem that it cannot be attached to a drainage basin having a thin side wall such as a resin drainage basin. Furthermore, since fitting of a pipe joint using the thickness of the side wall in this way requires a through hole sufficiently larger than the pipe joint in advance on the side wall, a filler or the like is injected around the pipe joint after insertion. Even if it is fixed, there is a problem that high sealing performance cannot be obtained between the pipe joint and the side wall, and workability is poor.

Japanese Patent Laid-Open No. 10-18405 Japanese Utility Model Publication No. 60-80188 Japanese Patent Laid-Open No. 9-242174 JP-A-7-259174 JP-A-7-268945 Japanese Patent Laid-Open No. 3-59226 JP 2001-56083 A

  Therefore, the present invention is a device installed inside the drainage drain, such as a water seal elbow for deodorization, an elbow with a backflow prevention valve for backflow prevention, an orifice for adjusting flow rate or a filter for removing foreign matter. In connection with the fitting means to be connected to the above-mentioned in order to connect the drainage pipe and the external drain pipe in fluid communication, especially for resin drainage with a thin side wall, etc. An object of the present invention is to provide a joint means that realizes space saving and high sealing.

  Accordingly, the present inventors have made extensive studies on the joint means to be attached to the above-mentioned basin in order to connect the equipment installed inside the drainage basin and the external drainage pipe in fluid communication. It has been found that the above-mentioned object can be achieved by using a flange wall provided on the outer periphery of the double pipe, and the present invention has been completed.

  That is, a feature of the present invention is that the device installed inside the drainage basin and the external drainage pipe of the basin are connected in fluid communication with each other so as to pass through the opening provided in the side wall of the trough or the vertical pipe. And the cylindrical joint means attached to the surrounding side wall, Comprising: The said joint means is connected with the said drainage pipe for the instrument connection outlet for connecting with the said instrument provided with the socket for joint connection An inner cylinder provided with a drain pipe connecting portion, an outer cylinder arranged concentrically with a certain gap in an outer region of the instrument connecting outlet of the inner cylinder, and A ring-shaped bottom wall extending from the inner cylinder toward the outer cylinder so as to seal the gap at a position away from the distal end of the instrument connection outlet, and a flange curved along the side wall By adhering or pressing the wall onto the wall of the side wall And a flange-shaped flange wall extending radially from the outer cylinder for liquid-tightly fixing the outer cylinder to the side wall, and the outer cylinder to the side wall via the flange wall By fixing, all or a part of the instrument connecting outlet of the inner cylindrical body is supported so as to be displaced from the inside or the outside of the vertical pipe to the outside.

  As a result, the fitting connection outlet of the joint means according to the present invention can suppress the protrusion from the inner wall surface while securing a connection allowance necessary for connecting the fixture. For this reason, according to the present invention, it is possible to save the space for connecting the appliance to the inside of the drainage basin, etc., and to make effective use of the internal space such as the drainage basin to the maximum. Since the remaining space that can be used for attaching and detaching the device becomes large, the attachment and detachment of the device and the maintenance of the mud reservoir bucket disposed under the drainage can be facilitated.

  The outer cylinder of the coupling means according to the present invention includes a flange-shaped flange wall extending radially from the outer cylinder, which is curved along the side wall of the drainage or standpipe. For this reason, the outer cylinder of the joint means is not drained or by the mouth edge (end face) of the opening provided in the side wall of the vertical pipe, but by drainage or by bonding or pressure welding to the wall of the side wall of the vertical pipe Since it is supported, the joint means can be fixed to the side wall in a fluid-tight manner without depending on the drainage or the thickness of the side wall of the vertical pipe. Further, since the outer cylinder of the joint means protrudes slightly on the bonding side beyond the flange wall, the protrusion of the outer cylinder drains when attaching the joint means. Since it abuts, the holding becomes easy.

  In addition, since the joint means of the present invention can be attached to the surrounding side wall through an opening provided at any position on the side wall of the drainage pipe or the vertical pipe, it is necessary to manufacture and prepare a dedicated drainage drainage. In addition, there is an advantage that the connection with an external drain pipe at the construction site becomes easy and the load on the operator is greatly reduced.

  In the present invention, as a coupling means, by tightening a nut facing the flange wall provided on the outer peripheral surface of the coupling means, the drainage or the opening provided in the vertical pipe can be passed through and attached to the surrounding side wall. It is possible to adopt a basic structure of a nut-clamping type branch pipe attached to the pipe.

  As the nut clamping type branch pipe, for example, a basic structure of a synthetic resin nut clamping type branch pipe as disclosed in Patent Document 7 (Japanese Patent Laid-Open No. 2001-56083) can be adopted. In the case of this type of nut-clamped branch pipe, an instrument connection outlet is provided from the inside to the flange wall that supports the branch main body in cooperation with the outer nut, and the branch main body is connected to the inner cylinder and the outer cylinder. The object is achieved by a double tube structure comprising a body and a bottom wall connecting them. Further, the opening of the drainage basin or the side wall of the vertical pipe can be easily provided by using a known hole saw or the like.

  Thus, when the coupling means according to the present invention is a nut-clamped branch pipe, drainage or adhesion of the flange wall to the side wall of the vertical pipe is not required, and the working time is greatly shortened and the installation is further simplified. Therefore, the work load on the construction site is greatly reduced.

  In the present invention, the internal device connected to the joint means is not particularly limited, but in general, a water seal elbow for deodorization, an elbow with a backflow prevention valve for backflow prevention, an orifice for flow rate adjustment or The joint means according to the invention can be used for instruments such as filters for removing foreign substances. In particular, an elbow having a backflow prevention valve or the like having a movable part inside is preferable because the operation status of movable parts such as a backflow prevention valve can be easily confirmed and inspected by making all or part of the outside transparent.

  The joint means according to the present invention comprises a fitting groove for fixing an O-ring on the outer peripheral surface of the instrument connection outlet, and an engagement protrusion provided on the inner peripheral surface of the joint connection receptacle of the instrument. A guide groove engaged with and in communication with the fitting groove, and an elastically deformable O-ring mounted in the fitting groove, wherein the guide groove of the joint means includes the instrument. After receiving the engagement protrusion for removably attaching to the joint means, to guide the engagement protrusion so that the end of the joint connection receiving port of the instrument comes into contact with the O-ring of the joint means After the contact with the first vertical wall extending along the tube axis direction of the tube, the end of the joint connection socket presses the O-ring by rotating the joint connection socket in the circumferential direction. While extending in an oblique direction with respect to the tube axis for guiding the engaging protrusion so as to move forward. After the second vertical wall and the end of the joint connection receptacle pass over the O-ring, the joint connection receptacle is further rotated in the circumferential direction so that the instrument is removed from the joint means. A third vertical wall extending in a direction perpendicular to the tube axis for holding the engaging protrusion so as not to be disengaged, and the circumferential direction of the joint connection receiving port to stop the rotation in the circumferential direction; A continuous guide wall composed of a fourth vertical wall extending along the tube axis direction for locking the engagement protrusion may be included on at least one side.

  In this case, on the outer peripheral surface of the connecting means (equipment connection outlet) of the joint means attached to the drainage drain or the side wall of the standpipe, the first to fourth verticals that are different from each other in the plane angle between adjacent walls are provided. A guide groove is provided which includes a wall and communicates with a fitting groove for fixing the O-ring. Therefore, when the receptacle of the instrument is pushed into the outlet of the joint means so that the engaging projection engages with the guide groove of the joint means, (1) the receptacle of the instrument is along the tube axis direction of the joint means. It is guided and abuts on the O-ring mounted in the fitting groove of the joint means or rides a little on the O-ring and receives a strong frictional resistance to stop its advance (the effect of the first vertical wall).

  (2) When the receptacle of the instrument that has stopped moving forward is rotated in the circumferential direction, the instrument advances with rotation in an oblique manner with respect to the longitudinal direction of the O-ring, and passes while pressing the O-ring. 2 vertical wall effect). As described above, in the present invention, since the receptacle of the instrument advances in an oblique direction with rotation, the end of the receptacle damages the O-ring or removes the O-ring from the ring groove. There is no. In addition, since the reaction force from the second vertical wall via the engaging projection also acts on the forward movement with the rotation described above, even if the forward movement is accompanied by a large deformation of the O-ring and a large pressing resistance, the operation is performed with a small force. be able to. As a result, according to the joint means of the present invention, sufficiently large elastic deformation can be imparted to the O-ring, and reliable and high sealing performance can be obtained.

  (3) After the distal end of the receptacle of the instrument has passed over the O-ring, when the receptacle is further rotated in the circumferential direction, the instrument stops moving forward in the tube axis direction and is pulled out along the tube axis direction. Even if a force is generated, it is guided to a position where it does not leave the joint means (the effect of the third vertical wall).

  (4) Then, the rotation without the advancement of the receptacle of the instrument is stopped when the engagement protrusion of the instrument comes into contact with the fourth vertical wall of the guide groove, and at that time, a large frictional force also works with the O-ring. Therefore, it is securely locked in that position (the effect of the fourth vertical wall). In order to maintain the balance of the locking force, it is preferable to provide at least two attachment / detachment mechanisms symmetrically with respect to the tube axis, such as a pair of upper and lower arrangements.

  In the present invention, since the guide groove including the first to fourth vertical walls described above communicates with the fitting groove for fixing the O-ring, the O-ring attached to the fitting groove is substantially In particular, it functions as a “fifth wall” for restricting the movement of the receptacle of the instrument or its engaging projection, and also functions as an “elastic wall” for locking them by frictional force. For this reason, in the present invention, due to their synergistic effect in which the receptacle of the instrument or its engaging projection, the guide groove of the joint means and the O-ring are linked, reliable locking of the instrument such as a water seal elbow, A reliable and high sealing performance can be obtained between the instrument and the joint means. Further, since the guide groove and the fitting groove are integrally formed, there is an effect that the joint means can be easily molded and processed and the manufacturing cost is reduced.

  As another form according to the present invention, the effect of facilitating processing and reducing the manufacturing cost by integrating the guide groove and the fitting groove cannot be obtained. By providing the guide groove on the inner peripheral surface of the joint connection receiving port of the instrument, the respective parts on which the engaging protrusion and the guide groove are formed can be replaced.

  That is, in the present invention, the feature of this embodiment is that the joint means according to the present invention has a fitting groove for fixing the O-ring on the outer peripheral surface of the instrument connection outlet, and further on the instrument connection side. An engagement protrusion engaging with a guide groove provided on an inner peripheral surface of the instrument, and an elastically deformable O-ring mounted on the fitting groove, the guide groove of the instrument being The engagement protrusion is adapted so that the end of the joint connection receiving port of the instrument comes into contact with the O-ring of the joint means after receiving the engagement protrusion for detachably attaching the instrument to the joint means. After the contact with the first vertical wall extending along the tube axis direction for guiding the joint, the joint connection receiving port is rotated in the circumferential direction so that the end of the joint connection receiving port is Guiding the engaging protrusion to advance while pressing the O-ring After the second vertical wall extending obliquely with respect to the tube axis and the end of the joint connection port pass over the O-ring, the joint connection port is further rotated in the circumferential direction. A third vertical wall extending in a direction perpendicular to the tube axis for holding the engaging projection so that the instrument does not detach from the joint means, and the joint connection receptacle. A continuous guide wall including a fourth vertical wall extending along the tube axis direction for locking the engagement protrusion so as to stop the rotation in the circumferential direction is included at least on one side. .

  In this case, on the inner peripheral surface of the connection portion (joint means connection receiving port) of the instrument such as a water seal elbow, the first to fourth continuous first to fourth different plane angles of the adjacent walls as described above are different. A guide groove is provided that includes a vertical wall and is in communication with a mating groove for securing the O-ring. Therefore, when the receptacle of the instrument is pushed into the joint port of the joint means so that the guide groove engages with the engagement protrusion of the joint means, the first to fourth vertical walls cause (1) to (1) as described above. The effect of (4) can be obtained.

  Further, as described above, when the engagement protrusion is provided on the outer peripheral surface of the fitting connecting outlet of the joint means and the guide groove is provided on the inner peripheral surface of the fitting connecting outlet of the fixture, the first to fourth The guide groove including the vertical wall cannot be communicated with the fitting groove provided in the joint means for fixing the O-ring. However, even in this case, due to the synergistic effect of the joint of the receptacle of the instrument and the O-ring of the joint means, it is possible to securely lock the instrument such as a water seal elbow and to secure the joint between the instrument and the joint means. For the purpose of obtaining a high sealing performance, the O-ring mounted in the fitting groove functions as a “fifth wall” for substantially restricting the movement of the receptacle of the instrument, and it is caused by friction. It is also necessary to function as an “elastic wall” for locking.

  Therefore, in this type of configuration, a fitting groove for fixing the O-ring is provided at a position away from the tip of the instrument connection outlet from the engagement protrusion, and the tip of the receptacle of the instrument is the O-ring of the joint means. The above-mentioned problem is solved by arranging so as to be in direct contact with each other.

  According to the present invention, the fixture connecting outlet of the joint means can suppress the protrusion from the inner wall surface while securing a necessary connection allowance. For this reason, according to the present invention, it is possible to save the space for connecting the appliance to the inside of the drainage basin, etc., and to make effective use of the internal space such as the drainage basin to the maximum. Since the remaining space that can be used for attaching and detaching the device becomes large, the attachment and detachment of the device and the maintenance of the mud reservoir bucket disposed under the drainage can be facilitated.

  Further, according to the present invention, the outer cylinder of the joint means includes a flange-like flange wall extending radially from the outer cylinder, which is curved along the drainage drain or the side wall of the vertical pipe. For this reason, the outer cylinder of the joint means is not drained or by the mouth edge (end face) of the opening provided in the side wall of the vertical pipe, but by drainage or by bonding or pressure welding to the wall of the side wall of the vertical pipe Since it is supported, the joint means can be fixed to the side wall in a fluid-tight manner without depending on the drainage or the thickness of the side wall of the vertical pipe. Further, since the outer cylinder of the joint means protrudes slightly on the bonding side beyond the flange wall, the protrusion of the outer cylinder drains when attaching the joint means. Since it abuts, the holding becomes easy.

  In addition, since the joint means of the present invention can be attached to the surrounding side wall through an opening provided at any position on the side wall of the drainage pipe or the vertical pipe, it is necessary to manufacture and prepare a dedicated drainage drainage. In addition, there is an advantage that the connection with the external drain pipe at the construction site is facilitated and the load on the operator is greatly reduced.

  Furthermore, in the joint means according to the present invention, one of the connected parts is provided with an engaging protrusion, and the other connected part is engaged with the engaging protrusion and the part on the side to be attached presses the O-ring. Applying an attachment / detachment mechanism with a special guide groove that guides it so that it moves forward with a predetermined movement, it is possible to securely and detachably attach a device mounted inside the drainage to the joint means. In addition, a reliable and high sealing performance can be obtained between these instruments and the joint means.

It is a top view of the elbow for water sealing with a joint means and a backflow prevention valve concerning one embodiment by the present invention attached to the side wall of a drain. It is AA sectional drawing of the Example shown by FIG. It is a perspective view of the joint means of the Example shown by FIG. It is a top view of the joint means of the Example shown by FIG. It is sectional drawing of the elbow for water seals with a backflow prevention valve shown by FIG. It is the top view to which the C section of the Example shown by FIG. 4 was expanded. It is sectional drawing for description which expanded the B section of the Example shown by FIG. It is the schematic which shows the usage method of the attachment / detachment mechanism of the Example shown by FIG.

  Hereinafter, a joint means according to an embodiment of the present invention, which is attached to the basin in order to connect a device attached to the inside of a drain basin and the like and an external drain pipe in fluid communication, will be described in detail with reference to the drawings. To do. The present invention is not limited to the examples shown below, and various modifications can be made without departing from the technical idea of the present invention.

  In FIG. 1, there are shown a joint means 2 according to an embodiment of the present invention attached to a receiving port 13 of a drainage basin 1 and a water seal elbow 3 with a backflow prevention valve connected to the joint means 2. A plan view is shown. 2 shows a cross-sectional view taken along the line AA of the embodiment shown in FIG. Although not shown, an opening / closing lid is detachably mounted on the upper portion of the drainage main body 10 so that the water sealing elbow 3 can be inspected and attached.

  As shown in FIGS. 1 and 2, the drainage basin 1 to which the coupling means 2 of the present embodiment is attached contains a cylindrical drainage basin body 10 and a mud reservoir bucket (not shown). In order to do this, it comprises a bottom 11 connected to the lower part thereof. And the opening parts 15 and 16 are provided in the mutually opposing surface on the same axis | shaft of the side wall 12 of the drainage main body 10, The joint means 2 of a present Example is penetrated to the surrounding side wall 12 through the one opening part 16. By attaching and attaching the branch pipe 14 to the surrounding side wall 12 through the other opening 15, it can be used as a drainage tank 1 having a water sealing function.

  That is, in the drainage basin 1, the branch pipe 14 and the joint means 2 are used as the drainage inlet and outlet, and the sealing water is sealed so that the tip 31 of the water sealing elbow 3 attached to the joint means 2 is immersed in water. By accumulating in the bottom part 11, the water sealing function is exhibited.

  As shown in FIG. 2, the joint means 2 is a tubular body having a double-pipe structure having a flange-like flange wall 25 on the outer periphery, and the flange wall 25 is provided on the side wall 12 of the drainage 1. The joint means 2 is fixed to the drainage basin 1 by passing through the opening 16 and adhering to the surrounding side wall 12. Further, the openings 15 and 16 of the side wall 12 of the drainage basin 1 can be easily provided by using a known hole saw or the like.

  On the other hand, the water sealing elbow 3 with a backflow prevention valve attached to the joint means 2 is a so-called 90 ° elbow that converts the flow of drainage from the vertical direction to the horizontal direction, and the joint end of the joint means 2 is an instrument. It has a joint connection receiving port 30 that fits into the connection differential port 22 and further has a cantilevered support that operates so that it opens when the drainage flow is forward flow and closes when reverse flow. A backflow prevention valve 32 is provided (see FIGS. 2 and 8). In addition, as understood with reference to FIG. 1, the flow passage cross-sectional area in the drainage main body 10 is not narrower than the flow passage cross-sectional area of the water sealing elbow 3 so that water passage is not hindered. Designed to be

  In FIG. 3, the perspective view (a) which looked at the joint means 2 of the present Example shown by FIG. 1 from the drain pipe connection side (front side), and the perspective view which looked from the instrument connection side (back side) ( b) is shown. 4 shows a plan view of the joint means 2 of the embodiment shown in FIG. 3 as viewed from above.

  As understood with reference to FIGS. 3 (a), 3 (b) and 4, the inner cylinder 20 of the joint means 2 is connected to a drain pipe connecting portion (receiving port) 23 for connecting an external drain pipe. It includes an instrument connection port 22 for connecting the water seal elbow 3. In addition, an outer cylindrical body 21 is arranged concentrically with a certain gap in the outer region of the instrument connecting outlet 22 of the inner cylindrical body 20, and the inner cylindrical body 20 and the outer cylindrical body 21 are separated from each other. They are connected by a ring-shaped bottom wall 26 arranged so as to seal the gap between the two cylinders at a position away from the tip of the connecting differential port 22. Further, a flange-like flange wall 25 that is curved along the side wall 12 of the drain 1 and extends radially from the outer cylinder 21 is formed on the outer peripheral surface of the outer cylinder 21.

  Therefore, in this embodiment, the outer cylinder 21 connected to the side wall 12 of the drainage wall 1 is fixed to the side wall 12 by adhering the flange wall 25 to the side wall 12. The inner cylindrical body 20 connected by the wall 26 is indirectly fixed to the side wall 12, and as a result, the joint means 2 of the present embodiment penetrates the opening 16 provided in the side wall 12 to the surrounding side wall 12. Fixed. For this reason, the joint means 2 of the present embodiment is provided with the joint connection receiving port 30 (of the water sealing elbow 3 between the outer tube 21 and the outer region of the instrument connection outlet 22 of the inner cylinder 20. (See FIG. 5) While holding the space (gap) necessary for receiving (see FIG. 3 (b)), all or part of the instrument connecting outlet 22 of the inner cylinder 20 protrudes from the inner wall of the drainage. So that the drainage can be displaced from the inside to the outside.

  As a result, the fixture connecting outlet 22 of the joint means 2 of the present embodiment can suppress the protrusion from the inner wall surface while securing a connection allowance necessary for connecting the water sealing elbow 3 (FIG. 1 and 2). For this reason, according to the present invention, it is possible to save the space for the drainage basin or the outlet for connecting the appliances in the vertical pipe, and it is possible to effectively use the internal space such as the drainage basin to the maximum. At the same time, the remaining space that can be used for attaching and detaching an instrument such as a water sealing elbow is increased, so that the attachment and detachment of the instrument and the maintenance of the mud reservoir bucket disposed below the drainage can be facilitated.

  Further, the outer cylinder 21 of the joint means 2 of the present embodiment includes a flange-like flange wall 25 that is curved along the side wall 12 of the drain 1 and extends radially from the outer cylinder 21. Therefore, the outer cylinder 21 of the joint means 2 is supported not by the opening cross section (thickness) of the side wall 12 of the drainage basin 1 but by adhesion or pressure contact on the wall surface of the side wall 12 of the basin 1. Regardless of the thickness of the side wall 12 of the drain 1, the joint means 2 can be fixed to the side wall 12 in a liquid-tight manner without difficulty. Further, since the outer cylindrical body 21 of the joint means 2 slightly protrudes to the bonding side beyond the flange wall 25 (see FIG. 4), when the joint means 2 is attached, the outer cylinder 21 protrudes. Since it abuts against the cross section of the opening of the side wall 12 of the main body 10, the drainage can be easily held.

  Moreover, since the joint means 2 of the present embodiment can be attached to the surrounding side wall 12 through the opening 16 provided at an arbitrary position of the side wall 12 of the drainage 1, There is no need to prepare, and there is also an advantage that the connection with an external drain pipe at the construction site becomes easy and the load on the operator is greatly reduced.

  Although not shown, the joint means having a double pipe structure according to the present invention is attached to and detached from the surrounding side wall through the opening by tightening a nut facing the flange wall provided on the outer peripheral surface of the joint means. It is possible to adopt the basic structure of a nut-clamping type branch pipe that can be freely attached.

  As the nut clamping type branch pipe, for example, a basic structure of a synthetic resin nut clamping type branch pipe as disclosed in Patent Document 7 (Japanese Patent Laid-Open No. 2001-56083) can be adopted. In the case of this type of nut-clamped branch pipe, an instrument connection outlet is provided from the inside to the flange wall that supports the branch main body in cooperation with the outer nut, and the branch main body is connected to the inner cylinder and the outer cylinder. The object is achieved by a double tube structure comprising a body and a bottom wall connecting them. Further, the opening of the drainage basin or the side wall of the vertical pipe can be easily provided by using a known hole saw or the like.

  Thus, when the coupling means according to the present invention is a nut-clamped branch pipe, drainage or adhesion of the flange wall to the side wall of the vertical pipe is not required, and the working time is greatly shortened and the installation is further simplified. Therefore, the work load on the construction site is greatly reduced.

  FIG. 5 shows a cross-sectional view of the water seal elbow 3 with a backflow prevention valve connected to the joint means 2 of the present embodiment, taken along a vertical plane including the tube axis. As can be understood with reference to FIG. 5, the water sealing elbow 3 is a so-called 90 ° elbow for converting the flow of the drainage from the vertical direction to the horizontal direction. A joint connection receiving port 30 that fits into the differential port 22 is provided, and inside thereof, a cantilever-supported backflow prevention that operates to open when the drainage flow is forward flow and close when it is reverse flow is provided. A valve 32 is provided. Moreover, in order to make attachment / detachment with the coupling means 2 easy, the handle 33 is provided in the upper part.

  In the present invention, the internal device connected to the joint means 2 is not particularly limited. Generally, a water seal elbow for deodorizing, an elbow with a backflow prevention valve for preventing backflow, and an orifice for adjusting flow rate are used. Or the joint means 2 by this invention can be used with respect to instruments, such as a filter for a foreign material removal. In particular, an elbow 3 with a backflow prevention valve having a movable part inside is preferable if all or a part of the outside is made transparent, since it becomes easy to check and check the operating status of movable parts such as a backflow prevention valve.

  In this embodiment, the joint connection receiving port 30 of the water seal elbow 3 can be securely and detachably attached to the instrument connection outlet 22 of the joint means 2, and when mounted, the water seal elbow 3 and the joint For the purpose of enabling high sealing performance with the means 2, an engagement protrusion is provided on the inner peripheral surface of the joint connection receiving port 30 of the water-sealing elbow 3, A special guide is provided on the outer peripheral surface of the connection outlet 22 to engage with the engaging protrusion and guide the water sealing elbow 3 to move forward with a predetermined movement while pressing the O-ring of the joint means 2. An attaching / detaching mechanism 4 is provided with a groove (see FIGS. 1, 2 and 3).

  Therefore, in order to explain the attachment / detachment mechanism 4 applied to the present embodiment, in FIG. 6, a portion C of the instrument connecting outlet 22 of the inner cylindrical portion of the joint means 2 shown in FIG. 4 is shown. An enlarged plan view is shown. Further, FIG. 7 shows an enlarged sectional view for explaining the portion B of the present embodiment shown in FIG. Furthermore, in FIG. 8, the usage method of the attachment / detachment mechanism 4 is shown step by step by the schematic diagrams (a) to (b).

  As shown in FIG. 6, a fitting groove 40 for fixing an O-ring on the outer peripheral surface of the instrument connection outlet 22 of the joint means 2 and an engagement protrusion of the water seal elbow 3 A guide groove 41 is formed which engages with 42 (see FIG. 7) and communicates with the fitting groove 40.

  As will be understood with reference to FIG. 6, the guide groove 41 of the joint means 2 receives the engagement protrusion 42 for detachably attaching the water seal elbow 3 to the joint means 2 and then the water seal elbow. A first vertical extending along the tube axis direction 24 for guiding the engagement protrusion 42 so that the end of the joint connection receptacle 30 of the joint 3 abuts against an O-ring (not shown) of the joint means 2. After the contact with the wall 401, the joint connection receiving port 30 of the water sealing elbow 3 is rotated in the circumferential direction so that the end of the joint connection receiving port 30 moves forward while pressing the O-ring. After the second vertical wall 402 extending obliquely with respect to the tube shaft 24 for guiding the mating protrusion 42 and the end of the joint connection receiving port 30 pass over the O-ring, the joint connection receiver is further received. By rotating the mouth 30 in the circumferential direction, the water sealing elbow 3 is not detached from the joint means 2. A third vertical wall 403 extending in a direction perpendicular to the tube axis 24 for holding the engagement protrusion 42 and an engagement so as to stop the rotation of the joint connection receiving port 30 in the circumferential direction. A continuous guide wall 400 including a fourth vertical wall 404 extending along the tube axis direction 24 for locking the protrusion 42 is included on one side. A mark 43 indicating the position of the engagement protrusion 42 is attached to the outer surface of the joint connection port 30 of the water seal elbow 3 so that the engagement protrusion 42 can be easily inserted into the guide groove 41. (See FIG. 8).

  In the present embodiment, the first through fourth vertical walls 401, 402, 403, 404, which are adjacent to each other and have different plane angles, are communicated with the fitting groove 40 for fixing the O-ring. As a result of arranging the guide groove 41 as described above, the receiving port 30 of the water-sealing elbow 3 is pushed into the differential port 22 of the joint means 2 so that the engaging projection 42 engages with the guide groove 41 of the joint means 2. 7 and 8, as shown in FIGS. 7 and 8, (1) The receiving port 30 of the water sealing elbow 3 is guided along the direction of the tube axis 24 of the joint means 2 and is mounted in the fitting groove 40 of the joint means 2. The O-ring 5 (refer to FIG. 7), or a little on the O-ring 5 to receive a strong frictional resistance to stop its advance (the effect of the first vertical wall 401, FIG. 8 (a), (See (b)).

  (2) When the receptacle 30 of the water-sealing elbow 3 that has stopped moving forward is rotated in the circumferential direction, the water-sealing elbow 3 moves forward in an oblique manner with respect to the longitudinal direction of the O-ring 5, and The O-ring 5 passes while being pressed (the effect of the second vertical wall 402, see FIGS. 8B and 8C). As described above, in this embodiment, the receiving port 30 of the water sealing elbow 3 advances in an oblique direction with rotation, so that the end of the receiving port 30 may damage the O-ring 5 or fit the O-ring 5. There is no removal from the joint groove 40. Further, since the reaction force from the second vertical wall 402 via the engagement protrusion 42 acts on the forward movement with the rotation described above, even if the forward movement is accompanied by a large deformation of the O-ring 5 and a large pressing resistance, a small force is required. Can be operated with. As a result, according to the attachment / detachment mechanism 4 of the present embodiment, a sufficiently large elastic deformation can be given to the O-ring 5, and a reliable and high sealing performance can be obtained (see FIG. 7A).

  (3) After the tip of the receiving port 30 of the water sealing elbow 3 passes over the O-ring 5, when the receiving port 30 is further rotated in the circumferential direction, the water sealing elbow 3 moves forward in the direction of the tube axis 24. And is guided to a position where it does not disengage from the joint means 2 even if a pulling force is generated along the direction of the tube axis 24 (see the effect of the third vertical wall 403, see FIG. 8C).

  (4) The rotation of the water sealing elbow 3 without the advancement of the receiving port 30 is stopped by the engagement protrusion 42 of the water sealing elbow 3 coming into contact with the fourth vertical wall 404 of the guide groove 41. At that time, a large frictional force is also exerted between the O-ring 5 and it is securely locked in that position (the effect of the fourth vertical wall 404, see FIGS. 7A and 8C). In addition, it is preferable to arrange at least two attachment / detachment mechanisms symmetrically with respect to the tube axis in order to maintain the balance of the locking force. In this embodiment, two attachment / detachment mechanisms are provided symmetrically with respect to the tube axis 24 in the vertical direction. 4 is arranged. In addition, in each of the attachment / detachment mechanisms 4, in order to facilitate the insertion of the engagement protrusion 42 into the guide groove 41, a mark 43 indicating the position of the engagement protrusion 42 is provided on the joint connection receiving port 30 of the water sealing elbow 3. Attached to the external surface.

  In addition, as understood with reference to FIG. 6, in this embodiment, the guide groove 41 including the first to fourth vertical walls 401, 402, 403, 404 is a fitting for fixing the O-ring 5. Since the O-ring 5 attached to the fitting groove 40 is in communication with the groove 40, the “fifth” for substantially restricting the movement of the receiving port 30 of the water-sealing elbow 3 or its engaging protrusion 42. It also functions as an “elastic wall” for locking them by frictional force. For this reason, in this embodiment, the water sealing elbow is formed by the synergistic effect of the receiving port 30 of the water sealing elbow 3 or its engaging projection 42 and the guide groove 41 and the O-ring 5 of the joint means 2 in cooperation. 3, and reliable and high sealing performance between the water sealing elbow 3 and the joint means 2 can be obtained. Further, since the guide groove 41 and the fitting groove 40 are integrally formed, there is an effect that the joint means 2 can be easily molded and processed, and the manufacturing cost is reduced.

  As another embodiment of the attachment / detachment mechanism, it is impossible to obtain the effects of facilitating processing and reducing the manufacturing cost by integrating the guide groove 41 and the fitting groove 40 as in this embodiment. By providing the mating protrusion 42 on the outer peripheral surface of the fitting connecting port 22 of the joint means 2 and the guide groove 41 on the inner peripheral surface of the joint connecting receiving port 30 of the water sealing elbow 3, The respective parts in which 42 and the guide groove 41 are formed can be replaced as shown in FIG.

  In this case, on the inner peripheral surface of the joint means connection receiving port 30 of the water sealing elbow 3, the first to fourth vertical walls 401 and 402 which are different from each other in the plane angle between the adjacent walls as described above. , 403, 404 are provided. Therefore, when the receiving port 30 of the water sealing elbow 3 is pushed into the differential port 22 of the joint means 2 so that the guide groove 41 engages with the engaging projection 42 of the joint means 2, the first to fourth vertical walls are provided. Thus, the effects (1) to (4) as described above can be obtained.

1 ······································ 10 ··· Side wall 14 ···························································································· Joint means 20 ·································· 21 ··························································· Water seal elbow with backflow prevention valve
30 ········· Joint receiving port 32 ····································································································· ································································································· No. 1 vertical wall 402 ・ ・ ・ ・ ・ ・ ・ ・ ・ 2nd vertical wall 403 ・ ・ ・ ・ ・ ・ ・ ・ ・ 3rd vertical wall 404 ・ ・ ・ ・ ・ ・ ・ ・ ・ 4th vertical wall 5 ... O-ring

Claims (6)

In order to connect the equipment installed inside the drainage basin and the external drainage pipe of the basin in fluid communication, a cylindrical shape that is attached to the surrounding side wall through the opening provided in the side wall of the basin or the vertical pipe A joint means, wherein the joint means comprises:
An inner cylinder body provided with an appliance connection outlet for connecting to the appliance provided with a joint connection receptacle, and a drain pipe connecting portion for connecting to the drain pipe;
An outer cylinder disposed concentrically with a certain gap in the outer region of the instrument connection outlet of the inner cylinder;
A ring-shaped bottom wall extending from the inner cylinder toward the outer cylinder so as to seal the gap at a position away from the tip of the instrument connection outlet, and curved along the side wall A flange-like flange wall extending radially from the outer cylinder for liquid-tightly fixing the outer cylinder to the side wall by bonding or pressure-contacting the flange wall onto the wall surface of the side wall; ,
The inner cylinder is fixed to the side wall via the flange wall by fixing the outer cylinder connected to the inner cylinder via the bottom wall, so that the instrument connection outlet of the inner cylinder is obtained. The joint means is characterized in that all or a part of the joint is displaced and supported so as to cross the side wall of the pipe or the vertical pipe.   The said joint means is a nut clamping type branch pipe which penetrates the said opening part and is detachably attached to the surrounding side wall by clamping | tightening the nut which opposes the said flange wall. Fitting means.   2. The joint means according to claim 1, wherein the instrument is a water seal elbow for deodorization, an elbow with a backflow prevention valve for backflow prevention, a flow rate adjusting orifice or a foreign matter removing filter. . The joint means is engaged with a fitting groove for fixing an O-ring on the outer peripheral surface of the instrument connection outlet and an engagement protrusion provided on the inner peripheral surface of the joint connection receptacle of the instrument. And a guide groove in communication with the fitting groove, and an elastically deformable O-ring attached to the fitting groove,
The guide groove of the joint means receives the engaging protrusion for detachably attaching the instrument to the joint means, and then the end of the joint connection receiving port of the instrument contacts the O-ring of the joint means. A first vertical wall extending along the tube axis direction for guiding the engaging protrusion so as to come into contact, and after contact, by rotating the joint connection receiving port in the circumferential direction, A second vertical wall extending obliquely with respect to the tube axis for guiding the engaging projection so that the end of the receptacle advances while pressing the O-ring; After the end portion passes over the O-ring, a tube shaft for holding the engagement protrusion so that the fitting is not detached from the joint means by further rotating the joint connection port in the circumferential direction. A third vertical wall extending in a direction orthogonal to the front and A continuous guide wall composed of a fourth vertical wall extending along the tube axis direction for locking the engagement protrusion so as to stop the rotation of the joint connection receiving port in the circumferential direction is at least on one side. The joint means according to claim 1, comprising: The joint means is engaged with a fitting groove for fixing the O-ring on the outer peripheral surface of the instrument connecting outlet, and a guide groove provided on the inner peripheral surface of the instrument on the instrument connecting side. A mating engaging protrusion, and an elastically deformable O-ring mounted in the fitting groove,
The guide groove of the instrument receives the engagement protrusion for detachably attaching the instrument to the joint means, and then the end of the joint connection receiving port of the instrument contacts the O-ring of the joint means. After the contact with the first vertical wall extending along the tube axis direction for guiding the engaging projection, the joint connection receiving port is rotated in the circumferential direction, thereby allowing the joint connection receiver to rotate. A second vertical wall extending obliquely with respect to the tube axis for guiding the engaging projection so that an end of the mouth advances while pressing the O-ring; and an end of the joint connection receiving port After the portion passes over the O-ring, the joint connection receiving port is further rotated in the circumferential direction, so that the pipe shaft for holding the engagement protrusion is prevented from being detached from the joint means. A third vertical wall extending in a direction orthogonal to the At least one side includes a continuous guide wall including a fourth vertical wall extending along the tube axis direction for locking the engagement protrusion so as to stop the circumferential rotation of the connection receiving port. The joint means according to claim 1, wherein   Drain which is equipped with the joint means according to any one of claims 1 to 5 on the side wall of the drain or the vertical pipe.

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