JP2008013986A - Drain pipe joint and cartridge member - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a drain pipe joint which enables a decelerated swirling flow to be imparted to wastewater flowing through a drain stand pipe, without the execution of large-scale piping work, on a site, already subjected to pipe arrangement, such as an existing condominium building and an existing office building, and which enables the performance of the cleaning of the drain stand pipe and a high-water test, without making a guide become a hindrance, or damaging or breaking the guide, and a cartridge member. <P>SOLUTION: This drain pipe joint comprises: a joint body 1 which is provided with a water passing port 1a allowing the passage of falling wastewater, and which is provided with a countersunk opening 1b communicating with a midway portion of the water passing port 1a; and the cartridge member 2 which is insertably/extractably formed in the opening 1b, in which a water channel port 2e is provided so that a water channel continuing into the water passing port 1a can be formed, and in which the guide 2f for imparting the decelerated swirling flow to the falling wastewater is provided in the water channel port 2e. The cartridge member 2 is attached to/detached from the cartridge member 2 according to a use condition. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a drainage pipe joint and a cartridge member for connecting drainage stacks to each other.

  Conventionally, there is a two-pipe drainage system as a drainage system. The two-pipe drainage system is a piping method in which a drainage pipe for passing sewage and miscellaneous drainage and a vent pipe for suppressing fluctuations in the pipe pressure are provided. When the pressure in the drain pipe becomes positive, the vent pipe plays a role of letting the air in the drain pipe escape from the vent pipe to the outside of the system and attenuates the positive pressure. When the pressure in the drain pipe becomes negative, It plays the role of attenuating negative pressure by supplying air from the vent pipe into the drain pipe. In designing such a two-pipe drainage system, even if it is designed appropriately according to the design standards and has a vent pipe diameter that can secure a sufficient ventilation rate, the ventilation rate is actually insufficient for the built structure. There is a fear.

  For example, in a multi-storey building such as a high-rise apartment building or high-rise office building, if a large amount of drainage flows instantaneously into the drainage stack due to extreme simultaneous drainage, the pressure fluctuation in the drainage stack becomes unexpectedly large and the drainage There was a fear that the drainage trap of the sanitary equipment connected to the drainage stack by the side branch pipe was broken. That is, in the upper floor, when a large amount of drainage flows down in the drainage stack on the lower floor side, air is sucked into the lower floor and the drainage stack is in an abnormal negative pressure state. At this time, the air in the drainage horizontal branch pipe is sucked to the drainage stack side, and the trap water in the drainage trap of the sanitary equipment is also sucked to the drainage stack side and broken. On the other hand, on the lower floor, when a large amount of drainage flows from the upper floor side through the drainage stack, the air is compressed and the drainage stack is in an abnormal positive pressure state. At this time, the air in the drainage stack is pushed out to the side of the drainage branch pipe, and the trap water in the drainage trap of the sanitary equipment is also pushed into the room from the drainage port of the sanitary ware and sealed.

  In view of this, there has been proposed a technical means that solves the above-mentioned problem by providing a decelerating swirling flow to the drainage flowing through the drainage stack and securing an air core and improving an allowable drainage load. In other words, by securing an air core in the drainage stack, when the inside of the drainage stack is in a positive pressure state, air is discharged through the air core, and in a negative pressure state, air is taken in through the air core and is in an abnormal positive pressure state. The above-mentioned problem is solved by eliminating the negative pressure state.

  As such technical means, for example, an upper vertical tube connection port, a straight tube body, a taper tube, a main body provided with a first turning guide and a second turning guide, and a lower vertical tube connection port are provided. The main body has an upper mounting seat, a lower mounting seat, and a full water test jig insertion opening formed on the side of the mounting seat. There is always a drainage pipe joint in which a jig insertion port for a full water test is sealed with a sealing lid.

  According to this drainage pipe joint, it is installed in the middle of the drainage stack, can impart swirlability to the draining drainage to secure an air core in the drainage stack, and in addition, can easily perform a full water test (For example, refer to Patent Document 1).

  The above-mentioned full water test means that, for example, a joint having a full water test jig insertion port is interposed in the middle of a connected drainage stack, and a jack-like, for example, is inserted in the full water test jig insertion port. A full water test jig is inserted and drained in a state where the drainage channel is shut off to inspect for leaks in the drainage standpipe. It becomes a part of. In some cases, instead of a jack-shaped full water test jig, a ball-shaped full water test jig that can swell like a balloon is inserted into the tube.

  In addition, as another aspect of the drainage pipe joint that gives a decelerating swirl flow, the cleaning port is opened on the peripheral wall of the substantially cylindrical drainage pipe joint body that is connected to the drainage stack at the upper and lower ends, Drainage whose cleaning port is covered with a lid, and on the inner peripheral surface of the drainage pipe joint body, a swiveling guide is provided at a height position substantially equal to that of the cleaning port, which gives a decelerating swirl to draining water. There are pipe fittings.

  According to this drainage pipe joint, a drainage pipe joint having a cleaning port capable of imparting a deceleration swirlability to drained water can be provided (see, for example, Patent Document 2).

JP-A-11-248070 (first page, FIG. 1) JP 2000-352490 A (first page, FIG. 1)

However, any of the above-described drainage pipe joints has the following problems because the inner wall of the joint body is raised to form a turning guide.
First, if there is a shortage of air flow in existing condominiums or office buildings where pipes are already installed, any of the above drainage pipe joints can be newly installed in the middle part of the drainage stack. Equivalent to re-plumbing the entire pipe, practically impossible.

In addition, since the drainage standpipe needs to periodically remove and clean the deposits in the pipe, a drainage joint provided with a cleaning port is appropriately interposed. As a cleaning method, for example, the cleaning port is closed. Open the lid, insert a cleaning nozzle through the cleaning port, and spray the cleaning liquid to clean the inside of the tube, or use a wire instead of the cleaning nozzle.
Thus, when cleaning the drainage standpipe, it is necessary to insert a cleaning nozzle, a wire, etc. into the pipe. However, in the case of a drainage standpipe incorporating any of the above drainage pipe joints, the above-mentioned guide is an obstacle. Or the guide may be damaged or broken. In addition, the guide may get in the way during the full water test.

  Therefore, the present invention has been made in view of such a situation, and drainage that flows into a drainage standpipe without performing extensive piping work in a place where piping has already been provided, such as an existing apartment or office building. To provide a drainage pipe joint and a cartridge member capable of giving a decelerating swirl flow to the pipe, and cleaning the drainage stack and performing a full water test without disturbing or damaging the guide. With the goal.

In order to achieve the above technical problem, the drainage pipe joint and the cartridge member according to the present invention employ the following technical means.
That is, the drain pipe joint according to claim 1 is provided with a joint body provided with a water passage port through which the fall drainage is passed, and an opening portion communicated with the middle portion of the water passage port, and the opening portion thereof. A cartridge member that is formed so as to be insertable / removable, and that is provided with a water channel port so that the water flow port becomes a continuous water channel, and a guide that provides a decelerating swirling flow to the falling drainage is provided in the water channel port. It is characterized by.

  A drainage pipe joint according to a second aspect of the present invention is the drainage pipe joint according to the first aspect, wherein the guide protrudes from the inner peripheral surface of the water channel opening and is formed in a substantially rib shape inclined at a required angle. .

  A drainage pipe joint according to a third aspect of the present invention is the drainage pipe joint according to the first or second aspect, wherein the guide includes at least two or more and is provided so as to face the inside of the water channel opening.

  A drainage pipe joint according to a fourth aspect of the present invention is the drainage pipe joint according to any one of the first to third aspects, wherein the opening portion is countersunk in a substantially rectangular shape, and the abutting surface of the opening portion is continuous with the abutting surface. A convex portion is formed at or near a corner portion where the lower surface intersects, and the cartridge member is formed with a concave portion that is detachably engaged with the convex portion.

According to a fifth aspect of the present invention, there is provided a cartridge member provided with a water passage port through which the fall drainage is passed, and communicated with a middle portion of the water flow port, and an opening portion or a cleaning portion into which a full water test jig or a full water test ball is inserted. A cartridge member used for a drainage pipe joint provided with a mouth,
A water channel port is formed so as to be detachable from the opening or the cleaning port, and the water flow port is a continuous water channel, and a guide that gives a decelerating swirl flow to the falling drainage is provided in the water channel port. It is characterized by that.

  According to the drainage pipe joint according to the present invention, the cartridge member provided with the guide for decelerating and swirling the drainage is removed from the opening to expose the opening, and the exposed opening serves as the insertion port for the full water test jig. Since there is a guide on the cartridge member side at that time, it is possible to eliminate the possibility that the guide will get in the way during a full water test or cleaning, or the guide may be damaged or damaged .

  According to the drainage pipe joint according to the present invention, a guide for decelerating and swirling the drainage is provided on the cartridge member so as to be freely inserted and removed from the opening, thereby providing the following effects. Conventional drainage pipe joints are provided with a guide that gives a slow swirling flow to the drainage of the inner wall of the joint body, so that the user accidentally causes insoluble foreign matter such as gauze to flow into the drainage standpipe from the sanitary instrument. If there is a problem that obstructs the drainage stack by being caught by the swivel guide, and the drainage function is obstructed, the worker to be recovered can use a jig such as a foreign object to pinch through a narrow cleaning opening. The foreign matter had to be removed by inserting, and workability was very poor. On the other hand, in the drainage pipe joint of the present invention, the guide can be removed from the joint main body together with the cartridge member, and foreign matter can be removed, so that the workability is very good.

  In addition, even if a hard foreign object such as metal has been accidentally infused from a sanitary instrument, the guide has been damaged due to contact with a foreign object whose acceleration has increased significantly due to gravity in the drainage stack. For drainage pipe joints where guides are provided on the inner wall of the joint body, the drainage pipe joint must be replaced, and the replacement work takes a long time and is expensive. In many cases, the drainage pipe joint according to the present invention can be recovered by simply replacing the broken cartridge member with each other, so that the replacement work is also short and the replacement cost can be greatly reduced. effective.

  Furthermore, since it is possible to replace the guide with the cartridge member, there is an effect that the shape of the guide can be easily replaced with a guide having a shape suitable for the characteristics of the water flow of the drainage in the drainage stack.

  According to the cartridge member according to the present invention, a full water test is performed at a time other than a full water test (during normal drainage) when a pipe with a full water test joint is already provided, such as an existing apartment or office building. By inserting a cartridge member in place of the lid that covers the opening for the full water test jig provided on the joint, a slow swirling flow can be added to the drainage that flows through the drainage stack without extensive piping work. Can be given easily.

Next, an embodiment of a drainage pipe joint according to the present invention will be described with reference to the drawings.
A drainage pipe joint A according to the present embodiment includes a joint body 1 and a cartridge member 2.

  As shown in FIGS. 1 to 3, the joint body 1 has an outer shape in which a midway part is formed in a rectangular shape, and the upper and lower sides are formed in a substantially cylindrical shape with the midway part as a boundary. The columnar portion is formed with a water passage port 1a through which the fall drainage is passed, and an opening portion 1b is formed in a substantially rectangular shape so as to communicate with the water passage port 1a on one side surface of the rectangular body portion. Formed.

  The width of the opening 1b is wider than the diameter of the water inlet 1a, and the upper and lower surfaces 1c and 1d of the opening are formed. The opening upper and lower surfaces 1c and 1d serve as contact surfaces for stretching a full water test jig B described later. Further, the surface in the depth direction of the opening 1b, that is, the abutting surface 1e of the opening 1b has a concave shape in plan view.

  Further, a projecting portion 1f is formed at a corner portion where the butting surface 1e of the opening 1b intersects the butting surface 1e and the opening lower surface 1d that is continuous. This convex portion 1f can be fitted into a concave portion provided in the full water test jig B (see FIG. 7) and a concave portion 2c provided in the cartridge member 2 described later. While preventing the reversal of the top and bottom, the plate B is prevented from rotating together when a full water test jig B described later is brought into contact with the joint body 1.

  Further, the joint body 1 is integrally formed with a flange 1g (provided with a mounting hole 1h) to be fastened with a bolt and a bolt fixed to the drainage stack C at both upper and lower ends, A screw hole 1k for fastening a later-described cartridge member 2 with a bolt is provided on the side surface on the part 1b side.

  As shown in FIGS. 3 to 6, the cartridge member 2 is formed in a substantially block shape in which the side surface on the front side is convexly curved along the inner surface shape of the opening portion 1 b, and the side surface on the opening portion 1 b side. And a hook-like projecting portion 2b provided with a communication hole 2a that engages with the screw hole 1k described above, and is formed at a position corresponding to the convex portion 1f provided on the joint body 1. A concave portion 2c that can be fitted to the convex portion 1f is provided. The cartridge member 2 thus formed can be inserted into and removed from the opening 1b and fastened.

  The cartridge member 2 is provided with a water channel port 2d having the same diameter as that of the water flow port 1a so as to be a water channel continuous with the water flow port 1a when the cartridge member 2 is inserted into the opening 1b. Further, a guide 2e for providing a decelerating swirl flow to the fall drainage is provided in the water channel port 2d.

  As shown in FIGS. 3 and 5, the guide 2e intersects the inner wall of each water channel port 2d in a direction orthogonal to the insertion direction of the cartridge member 2 on the center line of the water channel port 2d in a longitudinal sectional view. It is formed in a substantially rib shape that is inclined at a required angle in the vertical direction toward the insertion direction of the cartridge member 2.

  As described above, the guide 2e is a pair provided so as to be opposed to each other in the water channel opening 2d, and each central edge portion 2f of the guide 2e has a concave curved shape centering on the center of the water channel port 2d. Notches are formed. Thus, by forming the central edge portion 2f in a notch shape, it is possible to balance both the drainage deceleration and the drainage turning degree. In addition, the presence or absence of the notch of this center edge 2f is arbitrary.

  In this embodiment, the tilt direction of the guide 2e is tilted so that a counterclockwise vortex is formed, but may be tilted so that a clockwise vortex is formed. Moreover, although the outside of the overhang | projection part 2b is made into a concave shape and the meat stealing is carried out, the presence or absence of the meat stealing is arbitrary.

  The drainage pipe joint A according to the present embodiment configured as described above is connected to the drainage stack C in a so-called mechanical form. That is, the flange is inserted from the pipe end of the drainage stack C so as to be slidable in the pipe axis direction, and the pipe end of the drainage stack C is inserted from the water inlet of the joint body 1 to which the packing is attached. The drainage pipe joint A and the drainage stack C are connected in a watertight manner by tightening the packing with bolts and nuts after the C-side flange and the flange 1g are inserted through the mounting holes 1h. When the piping construction is completed, the cartridge member 2 is inserted into the opening 1b and fastened to the joint body 1 with a bolt to complete the piping construction. In addition, piping construction may be performed in a state in which the cartridge member 2 is fastened to the joint body 1, and the order thereof is arbitrary.

  In this way, when drainage is performed to the drainage system in which the piping construction is completed, the drainage is decelerated by the guide 2e provided in the cartridge member 2, and simultaneously turning, an air core is formed at the center of the drainage, Allowable drainage load can be improved.

  Further, the cartridge member 2 is removed from the opening 1b to expose the opening 1b, and the exposed opening 1b can be used as an insertion hole for the full water test jig B or as a cleaning hole. Since there is the guide 2e on the side, it is possible to eliminate the possibility that the guide 2e gets in the way during a full water test or cleaning, or the guide 2e is damaged or broken.

  Here, the outline of the former full water test among this full water test and pipe cleaning will be described with reference to FIGS. The full water test includes a case where a jack-shaped full water test jig B is used and a case where a ball-shaped full water test jig (test ball) D is used, which will be described in order.

(When using a jack-shaped full water test jig B)
First, the configuration of the full water test jig B will be described with reference to FIG. The full water test jig B is engaged with a column b4 having a drain hole therein, an upper plate b1 screwed to the upper end of the column b4, and a midway portion of the column b4. A water stop valve b3 that shuts off and opens the water port, an adjustment nut b5 that is screwed into a lower portion of the column b4, and that has a communication hole that communicates with a drain hole, and a lower end of the adjustment nut b5. The upper plate b1 and the lower plate b2 are brought into contact with and separated from each other by rotating the adjustment nut b5. Moreover, the above-described water stop valve b3 is used as an operation valve for draining water stored upward after inspection.
Further, the full water test jig B is provided with a concave portion at a position corresponding to the convex portion 1 f provided on the joint main body 1 to prevent the reverse of the top and bottom, and the full water test jig B is attached to the joint main body 1. The plates are prevented from rotating together when they are brought into contact with each other.

  In the full water test using the jack-shaped full water test jig B configured as described above, the cartridge member 2 is first removed from the opening 1b to expose the opening 1b, and then the full water test jig is used. Insert B. When the insertion is completed, the adjustment nut b5 is rotated so that both the upper plate b1 and the lower plate b2 are in contact with and pressed against the upper and lower surfaces 1c and 1d of the opening, and the drain pipe joint A is sandwiched between the upper and lower surfaces. The drainage channel of the drainage standpipe C piped in the above is brought into a communication state via the above-described water passage (for the column b4) and the communication hole (adjustment nut b5). Thereafter, the water stop valve b3 is closed to shut off the drain hole (the water stop valve b3 may be closed in advance).

Then, as shown in FIG. 8, water is passed from either the drainage pipe joint A or the full water test joint according to the present embodiment, which is connected higher than the installed full water test jig B. Check for leaking parts.
When the inspection is completed, the water stop valve b3 described above is opened, the water stored above is released downward, and the full water test jig B is removed from the opening 1b. Furthermore, by attaching the cartridge member 2 to the opening 1b, a series of full water tests are completed.

(When using a ball-shaped full water test jig (test ball) D)
Next, a case where a full water test is performed using the ball-shaped full water test jig D will be described. This ball-shaped full water test jig D is formed by connecting a ball part d1 that can be swelled by compressed air and an air pump d2 via a tube d3, and by operating the air pump d2, The part d1 bulges out.

  First, the cartridge member 2 of the drainage pipe joint A according to this embodiment is removed from the opening 1b to expose the opening 1b, and then, as shown in FIG. Lower to position.

When the ball part d1 is lowered to a predetermined position, the air pump d2 is operated to bulge the ball part d1 and close the drainage channel of the drainage stack C.
Then, in the same manner as described above, water is passed through the drainage pipe joint A according to the present embodiment located above the ball part d1, and the leakage of each connection part is inspected.

  Thus, by using the drainage pipe joint A according to the present embodiment, it is possible to eliminate the possibility that the guide 2e gets in the way during the full water test, or the guide 2e is damaged or broken. The same effect can be obtained in the case of in-pipe cleaning.

  As described above, according to the junction joint according to the present embodiment, the cartridge member 2 provided with the guide 2e that decelerates and turns the drainage is removed from the opening 1b to expose the opening 1b, and the exposed opening 1b is removed. It can be used as an insertion hole for the full water test jig B or as a cleaning hole. In addition, since there is the guide 2e on the cartridge member 2 side, it is possible to eliminate the possibility that the guide 2e will get in the way during a full water test or cleaning, or the guide 2e may be damaged or broken.

  Moreover, in this Embodiment, although illustrated as the drainage pipe coupling A, the structure of only the cartridge member 2 may be sufficient. In this case, it is used for an existing drainage pipe joint provided with a countersink-shaped opening 1b into which a full water test jig B or a full water test ball is inserted or a cleaning hole. That is, the configuration itself is the same as the cartridge member 2 described above, but when a pipe with a full water test joint or the like is already provided, such as an existing apartment or office building, other than the full water test (usually When the cartridge member 2 is inserted in place of the lid that covers the opening 1b provided in the joint for full water test, etc., the drainage standpipe C can be used without carrying out extensive piping work. It is possible to easily give a decelerating swirl flow to the drainage flowing through. Needless to say, the cartridge member 2 is formed in accordance with the shape of the opening 1b provided in the existing full water test joint or the like.

  Furthermore, by preparing several patterns of cartridge members 2 that can produce different deceleration swirl flows by varying the number of guides 2e and the inclination angle, it is possible to select one that can obtain the optimum decelerating swirl flow for each building. Therefore, convenience can be improved.

  As mentioned above, although the drain pipe joint concerning this embodiment was explained, the embodiment mentioned above shows an example of the suitable embodiment of the present invention, and the present invention is not limited to it, Various modifications can be made without departing from the scope of the invention.

It is a longitudinal cross-sectional view of the drain pipe joint concerning this Embodiment. It is a front view (state seen from the opening part side) of a coupling main body. It is a longitudinal cross-sectional view of a decomposition | disassembly state. It is a perspective view of a cartridge member. It is a top view of a cartridge member. It is a front view of a cartridge member. It is a longitudinal cross-sectional view of the jig for a full water test. It is explanatory drawing which shows the outline of a full water test (when using a jack-shaped full water test jig). It is explanatory drawing which shows the outline of a full water test (when using a ball-shaped full water test jig (test ball)).

Explanation of symbols

DESCRIPTION OF SYMBOLS A ... Drainage pipe joint 1 ... Joint main body 1a ... Water flow port 1b ... Opening part 1c ... Opening part upper surface 1d ... Opening part lower surface 1e ... Butting surface 1f ... Protruding part 1g ... Flange 1h ... Mounting hole 1k ... Screw hole 2 ... Cartridge member 2a ... Communication hole 2b ... Overhang 2c ... Recess 2d ... Waterway 2e ... Guide 2f ... Central edge B ... Jack-shaped full water test jig b1 ... Upper plate b2 ... Lower plate b3 ... Water stop valve b4 ... Post b5 ... Adjustment nut C ... Drainage stack D ... Ball-shaped full water test jig (test ball) d1 ... Ball part d2 ... Air pump d3 ... Tube

Claims (5)

A joint body provided with a water passage through which the fall drainage is passed, and provided with an opening communicated with a middle portion of the water passage,
A cartridge member formed in the opening so as to be insertable / removable, provided with a water channel opening so that the water flow port becomes a continuous water channel, and provided with a guide for giving a decelerating swirling flow to the falling drainage in the water channel port; A drainage pipe joint characterized by comprising.   The drainage pipe joint according to claim 1, wherein the guide protrudes from the inner peripheral surface of the water channel opening and is formed in a substantially rib shape inclined at a required angle.   The drainage pipe joint according to claim 1 or 2, wherein the guide comprises at least two or more and is provided so as to face the inside of the water channel. The opening portion is formed in a substantially rectangular shape, and a convex portion is formed at or near a corner portion where the abutting surface of the opening portion and the opening upper and lower surfaces continuous with the abutting surface intersect,
The drainage pipe joint according to any one of claims 1 to 3, wherein the cartridge member is formed with a concave portion that is detachably engaged with the convex portion. A cartridge member used for a drainage pipe joint provided with a water passage port through which falling drainage is passed and having an opening or a cleaning port which is communicated with the middle portion of the water passage and into which a full water test jig is inserted. There,
A water channel port is formed so as to be detachable from the opening or the cleaning port, and the water flow port is a continuous water channel, and a guide that gives a decelerating swirl flow to the falling drainage is provided in the water channel port. A cartridge member.

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