JP4083025B2 - Septic tank piping joint - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention includes a cylindrical member having a screw portion formed on the outer periphery, a flange portion integrally formed with the cylindrical member, and a nut screwed into the screw portion, and an opening formed in the wall of the septic tank. The present invention relates to a pipe joint of a septic tank that is attached in such a manner that a wall of the septic tank is sandwiched by a clamping force from a flange part and a nut part by inserting the cylindrical member into a screw part and screwing a nut into a screw part.
[0002]
[Prior art]
Conventionally, as a technique related to a pipe joint of a septic tank configured as described above, a pipe fixture (a pipe of the present invention) including a screw cylinder with a flange and a nut screwed into a male screw cylinder of the screw cylinder. Joint). In this conventional technique, a screw cylinder is inserted into a through-hole formed with a partition wall (wall body of the present invention), a sealing material is sandwiched between the flange portion of the screw cylinder and the partition wall, and a nut is screwed into the screw cylinder. The pipe fixing tool is supported by the partition wall, and an O-ring is disposed between the pipe inserted through the screw cylinder and the screw cylinder (for example, see Patent Document 1).
[0003]
[Patent Document 1]
JP-A-11-104661 (paragraph numbers [0022] to [0027], FIG. 2)
[0004]
[Problems to be solved by the invention]
Considering piping that communicates with the internal space of the septic tank, for example, piping that supplies sewage to the septic tank and piping that discharges treated water that has been purified in the septic tank are fixed to the outer wall of the septic tank. . Then, between the pipe and the outer wall of the septic tank, a seal material is disposed in the same manner as that described in Patent Document 1, so that water from the outside of the pipe enters or leaks out of the pipe. Configured to prevent.
[0005]
Also, in the case of fixing the pipe to the outer wall portion of the septic tank via the pipe joint, considering the sealing performance between the pipe and the outer wall portion of the septic tank, this sealing performance is not only related to the structure of the pipe joint but also the performance of the sealing material. It depends on you. Therefore, it is desired to use a sealing material that prevents water from entering the outside of the pipe or leaks out of the pipe in an optimal form. Therefore, it is conceivable to reliably close the space through which water passes by using a sealing material having relatively high fluidity. However, as in Patent Document 1 described above, a structure in which a wall is sandwiched between a flange and a nut. When a sealant having high fluidity is used, the pressure applied when tightening with a nut flows out of the pipe joint, leading to a disadvantage that the seal performance is lowered.
[0006]
The objective of this invention exists in the point which comprises rationally the piping joint of the septic tank which can improve the sealing performance of a piping joint and the wall of a septic tank.
[0007]
[Means for Solving the Problems]
The features, functions and effects of the piping joint of the septic tank according to claim 1 of the present invention are as follows.
〔Characteristic〕
A cylindrical member having a screw portion formed on the outer periphery, a flange portion integrally formed with the cylindrical member, and a nut screwed to the screw portion, and the cylindrical shape in an opening formed in the wall of the septic tank inserting the member, in a septic tank of the pipe joint mounted in a form sandwiching the wall of the septic tank by clamping pressure from the flange portion and the nut and by tightening by screwing the nut onto the threaded portion, at the time of tightening, the flange the outer peripheral side of at least one of the nip-pressing surface of the part and the nut is close to the wall side, to set the shape of the I cormorant nip-pressing surface inner peripheral side of the pressing surface is spaced apart from the wall, the inner peripheral side of the nip-pressing surface The sealing material is arranged in a space separated from the wall body .
[0008]
[Action / Effect]
According to the above features, by inserting the tubular member into an opening formed in the wall of the septic tank, by performing a tightening operation by screwing the nut to the threaded portion, and disposed between the pressing surface and the wall Pressure is applied to the sealing material to fill the gap with the sealing material to improve the sealing performance.In addition, when tightening, the outer peripheral side of the pressing surface is close to the wall, and the inner periphery of the pressing surface Since the side is formed in a shape that is separated from the wall, the sealing material is stored in a state of being confined on the inner peripheral side of the pressing surface when the outer peripheral side of the pressing surface is in contact with the wall. As a result, even if there is a gap between the pipe joint and the wall, the pipe joint of the septic tank that reliably fills the gap with the sealing material and reliably maintains this filled state is configured rationally. It was done.
[0009]
The features, functions and effects of the pipe joint of the septic tank according to claim 2 of the present invention are as follows.
〔Characteristic〕
A cylindrical member having a screw portion formed on the outer periphery, a flange portion integrally formed with the cylindrical member, and a nut screwed to the screw portion, and the cylindrical shape in an opening formed in the wall of the septic tank inserting the member, in a septic tank of the pipe joint mounted in a form sandwiching the wall of the septic tank by clamping pressure from the flange portion and the nut and by tightening by screwing the nut onto the threaded portion, the flange portion and the nut The washer member is disposed on the side of at least one of the clamping surfaces, and when tightening, the outer peripheral side of the clamping surface of the washer member is close to the wall body, and the inner peripheral side of the clamping surface is separated from the wall body. The shape of the clamping surface of the member is set , and the sealing material is arranged in a space separated from the wall on the inner peripheral side of the clamping surface .
[0010]
[Action / Effect]
According to the above characteristic, by the tubular member inserted into an opening formed in the wall of the septic tank, performing at least one of arranged to tighten operating the washer member to the side of the nip-pressing surface of the flange portion and the nut, Pressure is applied to the sealing material arranged between the clamping surface and the wall body, and the inside of the gap is filled with the sealing material to improve the sealing performance, and at the time of tightening, the outer peripheral side of the clamping surface is Since the inner peripheral side of the pressing surface is close to the wall body and is shaped to be separated from the wall body, the sealing material is stored on the inner peripheral side of the pressing surface when the outer peripheral side of the pressing surface is in contact with the wall body It becomes. As a result, even if there is a gap between the pipe joint and the wall, the pipe joint of the septic tank that reliably fills the gap with the sealing material and reliably maintains this filled state is configured rationally. It was done.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
As shown in FIGS. 1 and 2, the raw water inlet In is formed at one end of the upper position of the case-shaped main body A, and the outlet Ex is formed at the other end of the main body A. The first partition wall B1, the second partition wall B2, and the third partition wall B3 are disposed in this order from the raw water inlet In side to the outlet port Ex side, and the partition wall is disposed inside the main body A. A septic tank is formed by forming an anaerobic treatment tank N, an aerobic treatment tank E, a treated water tank T, and a disinfection tank Q in a space defined by B (the upper concept of the first, second, and third partition walls). Has been.
[0012]
This septic tank is installed under the ground, and in order to perform inspections and maintenance in a state where it is installed under the ground, an upper lid of the main body A is opened upward and an openable lid is provided. A plurality of manhole portions H are formed.
[0013]
The main body A and the partition wall B are each made of FRP using SMC (sheet molding compound) as a molding material. The SMC is formed by impregnating a glass fiber as a reinforcing material with an unsaturated polyester resin, a filler, or other additives to form a sheet, and this SMC is formed into a convex mold and a concave mold. Then, the main body A and the partition wall B are formed by a pressurization and heat treatment process using a press machine.
[0014]
In this septic tank, the raw water pipe 1 is supported by the pipe joint J fixedly supported at the raw water inlet In, and the discharge pipe 1 is supported by the pipe joint J fixedly supported by the discharge port Ex. . This pipe joint J is a characteristic part of the present invention, and details thereof are shown in FIGS. Moreover, this pipe joint J is not only applied to the septic tank of the structure shown in FIG.1 and FIG.2, but is applicable also to the septic tank of a different structure.
[0015]
That is, the wall body 2 constituting the main body A of the septic tank is formed in an inclined posture, and an opening 2A having a circular shape with a pair of engagement pieces 2T projecting from the inner periphery of the wall body 2 is formed. A pipe joint J is supported to the opening 2A. Each of the pipe joints J has basically the same structure, and is formed of a resin-made tubular member 5 having a screw portion 5A formed on the outer periphery and a flange portion 5B integrally formed, and an outer surface of the tubular member 5. The pipe joint J is configured by including a resin washer member 6 to be fitted and a resin nut 7 screwed into the screw portion 5A. When the pipe 1 is supported by the pipe joint J, an adhesive is applied to at least one of the inner surface of the cylindrical member 5 and the outer surface of the pipe 1, and then the pipe 1 is connected to the inner surface of the cylindrical member 5. It becomes the form which inserts and fixes to.
[0016]
In order to support the pipe 1 in a horizontal posture by setting the axis X of the cylindrical member 5 in a horizontal posture, the cylindrical member 5 is arranged so as to follow the inclined posture of the wall body 2. It is formed in a posture in which the whole is inclined with respect to the axis X. Further, a stopper portion 5C is integrally formed at the inner end position of the inner surface of the cylindrical member 5, and a pair of groove portions 5G are formed along the axis X in the screw portion 5A. As shown in FIGS. 5 and 6, the washer member 6 is entirely fitted to the orthogonal surface 6 </ b> V and the shaft core X in a state of being fitted to the tubular member 5 and orthogonal to the shaft core X of the tubular member 5. And a pair of engaging pieces 6T that engage with the groove 5G are integrally formed on the inner peripheral surface. The nut 7 is integrally formed with a thread surface (female thread) 7A that is screwed into the threaded portion 5A of the cylindrical member 5 and a plurality of operated pieces 7B that receive a rotational operation force.
[0017]
In the flange portion 5B, the pressing surface 5P facing the wall body 2 and the inclined surface 6P of the washer member 6 have an outer peripheral side close to the wall body side, and the inner peripheral side of the pressing surface 5P, 6P is the wall. Each of them is formed on the inner surface of the horn so as to be separated from the body 2.
[0018]
Since the pipe joint J is configured as described above, when the pipe joint J is supported on the wall 2 of the septic tank, the opening 2A formed on the wall 2 of the septic tank is first associated with the opening 2A. The joining piece 2T is inserted through the tubular member 5 in a state where the groove portion 5G is engaged, and then the engaging piece is inserted into the groove portion 5G of the screw portion 5A of the tubular member 5 in a state inserted through the opening 2A. The washer member 6 is fitted in a state where 6T is engaged, and the screw portion 7A of the nut 7 is screwed into the screw portion 5A of the cylindrical member 5. Thus, in the state where the cylindrical member 5 is inserted into the opening 2A, the engaging piece 2T of the opening 2A and the groove portion 5G of the cylindrical member 5 are engaged with each other. On the other hand, it is supported in a non-rotatable state, and the engaging piece 6T of the washer member 6 is engaged with the groove portion 5G of the cylindrical member 5, so that the washer member 6 cannot rotate with respect to the cylindrical member 5. Supported.
[0019]
Thus, in the state in which the screw portion 7A of the nut 7 is screwed to the screw portion 5A of the cylindrical member 5, the pinching surface 6P of the washer member 6 is interposed between the pinching surface 5P of the flange portion 5B and the wall body 2. The sealing material S is injected into the space between the wall 2 and the wall 2 as shown in FIG. As the sealing material S to be injected in this way, an epoxy resin type or a polyurethane resin type that is cured by mixing the main agent and the curing agent is used, and injection is performed by mixing two liquids of the main agent and the curing agent at the time of injection. A dispenser or the like is used.
[0020]
Next, after the injection of the sealing material S is finished, a tightening operation is performed by rotating the nut 7, so that as shown in FIG. 6B, between the pressing surface 5P of the flange portion 5B and the wall body 2, and The pressure acts on the sealing material 2 existing in the space between the pinching surface 6P of the washer member 6 and the wall body 2, and between the respective pinching surfaces 5P, 6P and the wall body 2, The sealing material S enters the fine space between the inner periphery of the opening 2A and the outer periphery of the cylindrical member 5, and at the same time, the wall 2 is formed by the flange portion 5B and the washer member 6 of the cylindrical member 5 when the tightening operation is completed. The pipe joint J is supported by pressing. In this supported state, the inner peripheral sides of the respective pressing surfaces 5P and 6P are sufficiently separated from the surface of the wall body 2, and the sealing material S is stored in a state in which the sealing material S is enclosed in the space formed by the separation. As a result, a good sealing state appears without the lack of the sealing material S.
[0021]
Thereafter, an adhesive is applied to the inner surface of the cylindrical member 5 or the outer surface of the pipe 1 or to each of them, and the pipe is inserted to a position where it comes into contact with the stopper portion 5C with respect to the inner surface of the cylindrical member 5. Therefore, the pipe 1 is firmly supported with respect to the pipe joint J.
[0022]
As described above, in the present invention, by setting the shape of the clamping surfaces 5P and 6P that sandwich the wall body 2, the pipe joint J is reliably supported with respect to the wall body 2, and at the same time, between the pipe joint J and the wall body 2. In addition to not only preventing the leakage of water from the inside of the septic tank to the external space of the septic tank at the site of this pipe joint J, the sealing material S is surely pressurized and sealed even for minute gaps formed in It prevents water from entering the septic tank from outside the septic tank. In particular, as shown in the embodiment of the present invention, the flange 5B formed on the cylindrical member 5 is formed in an inclined posture, and the washer member 6 having the inclined surface 6P is used to make the inclined posture in the main body A of the septic tank. The pipe 1 can be supported in a horizontal posture with respect to the wall 2 portion.
[0023]
In addition, the present invention provides, for example, as the sealing material S, a plastic material that can be freely deformed when pressure is applied, such as a putty-like material, or a resin ( An elastomer or the like) can be formed in a ring shape and set so as to be externally fitted to the cylindrical member 5, and the pipe joint J of the present invention can be used against the partition wall B inside the septic tank. It can also be used to support piping.
[0024]
[Another embodiment]
In addition to the above-described embodiment, the present invention can be configured as follows (in this other embodiment, those having the same functions as those of the above-described embodiment have the same numbers and symbols as those of the embodiment) Is attached).
[0025]
(A) As shown in FIG. 7, the pipe joint J includes a resin tubular member 5 having a screw portion 5A formed on the outer periphery and a resin nut 7 screwed into the screw portion 5A. To do. The pipe joint J forms a flange portion 5B so that the clamping surface 5P is positioned on a virtual plane inclined with respect to the axis X of the cylindrical member 5, and has an axis perpendicular to the virtual plane. The threaded portion 5A having Y as an axis is formed in the cylindrical member 5, and the flange portion 5B is formed in this way, so that the washer member shown in the embodiment of the invention can be dispensed with. ing. When the pipe joint J is supported by the wall body 2, the tubular member 5 is inserted into the opening 2 </ b> A of the wall body 2, and the nut 7 is screwed into the screw portion 5 </ b> A of the tubular member 5. Thus, a positional relationship is reached in which the wall body 2 is sandwiched between the pressing surface 5P facing the wall body 2 in the flange portion 5B and the pressing surface 7P facing the wall body 2 in the nut 7. Each of the pressing surfaces 5P and 6P is configured such that the outer peripheral side is close to the wall 2 and the inner peripheral sides of the pressing surfaces 5P and 7P are separated from the wall 2.
[0026]
With this configuration, after the seal S is filled between the clamping surfaces 5P and 7P and the wall body 2, the pipe joint J is securely supported to the wall body 2 only by tightening by rotating the nut 7. The fine gap formed between the pipe joint J and the wall body 2 is reliably pressurized and sealed with the sealing material S, and the internal space of the septic tank is sealed at the site of the pipe joint J. This not only prevents water leakage from the inside of the septic tank to the external space, but also prevents water from entering the inside of the septic tank from outside the septic tank.
[0027]
(B) As shown in FIG. 8, the pipe joint J includes a resin tubular member 5 having a screw portion 5A formed on the outer periphery and a resin nut 7 screwed into the screw portion 5A. To do. The pipe joint J is formed by forming the flange portion 5B on the plane perpendicular to the axis X of the cylindrical member 5 so that the pressing surface 5P of the flange portion 5B is located. By forming 5B, the washer member shown in the embodiment of the invention can be dispensed with. When the pipe joint J is supported by the wall body 2, the tubular member 5 is inserted into the opening 2 </ b> A of the wall body 2, and the nut 7 is screwed into the screw portion 5 </ b> A of the tubular member 5. Thus, a positional relationship is reached in which the wall body 2 is sandwiched between the pressing surface 5P facing the wall body 2 in the flange portion 5B and the pressing surface 7P facing the wall body 2 in the nut 7. Each of the pressing surfaces 5P and 6P is configured such that the outer peripheral side is close to the wall 2 and the inner peripheral sides of the pressing surfaces 5P and 7P are separated from the wall 2.
[0028]
This configuration is intended for a septic tank in which the wall 2 is in a vertical posture, and only the posture of the flange portion 5B and the axis of the screw portion 5A are different from those of the other embodiment (A). The basic configuration is the same. Accordingly, the pipe joint J is tightened by rotating the nut 7 after the seal S is filled between the pressing surfaces 5P and 7P and the wall body 2 in the same manner as in the other embodiment (A). The sealing material S is surely pressure-filled and sealed even in a minute gap formed between the pipe joint J and the wall body 2. In the region, leakage of water from the inside of the septic tank to the internal space and the external space of the septic tank is prevented, and entry of water from the outside of the septic tank to the inside of the septic tank is prevented.
[Brief description of the drawings]
[Fig. 1] Longitudinal side view of septic tank [Fig. 2] Transverse plan view of septic tank [Fig. 3] Disassembled perspective view of pipe joint [Fig. 4] Cross-sectional view of pipe joint disassembled [Fig. 5] State supported on wall FIG. 6 is a cross-sectional view showing a state where a sealing material is injected into the clamping surface and supported by a wall body. FIG. 7 is a cross-sectional view showing a pipe joint according to another embodiment (A). ] Cross-sectional view showing a pipe joint of another embodiment (b) [Explanation of symbols]
2 Wall 2A Opening 5 Tubular member 5A Screw part 5B Flange part 5P Clamping surface 6 Washer member 6P Clamping surface 7 Nut

Claims (2)

A cylindrical member having a screw portion formed on the outer periphery, a flange portion integrally formed with the cylindrical member, and a nut screwed to the screw portion, and the cylindrical shape in an opening formed in the wall of the septic tank inserting the member, a septic tank of the pipe joint mounted in a form sandwiching the wall of the septic tank by clamping pressure from the flange portion and the nut and by tightening by screwing the nut onto the threaded portion,
During tightening, the outer peripheral side of at least one of the nip-pressing surface of the flange portion and the nut is close to the wall side, to set the shape of the I Cormorant nip-pressing surface inner peripheral side of the pressing surface is spaced apart from said wall, said A piping joint of a septic tank, wherein a sealing material is arranged in a space separated from the wall body on the inner peripheral side of the clamping surface . A cylindrical member having a screw portion formed on the outer periphery, a flange portion integrally formed with the cylindrical member, and a nut screwed to the screw portion, and the cylindrical shape in an opening formed in the wall of the septic tank inserting the member, a septic tank of the pipe joint mounted in a form sandwiching the wall of the septic tank by clamping pressure from the flange portion and the nut and by tightening by screwing the nut onto the threaded portion,
The washer member is arranged on at least one side of the nip-pressing surface of the flange portion and the nut, when tightened, close to the outer peripheral side the wall of the pressing surfaces of the washer member, the inner peripheral side the walls of the nip-pressing surface A piping joint of a septic tank , wherein the shape of the pressure-clamping surface of the washer member is set so as to be separated from the body, and the sealing material is arranged in a space separated from the wall body on the inner peripheral side of the pressure-clamping surface .

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