JP2017172130A - Seal member for pit mounting table - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a seal member for a pit mounting table that readily and securely seals a gap between a groove part formed on a pit mounting table mounted on a buried valve base and a pipe joint inserted into the groove part.SOLUTION: A seal member for a pit mounting table comprises a plate-form first member 2 fitted on a surface of a groove part formed on a pit mounting table mounted on a base body of a buried valve base, and a plate-form second member 3 fitted on a surface of the first member 2. A first opening 4 for inserting a pipe joint is formed on the first member 2, while a second opening 5 for inserting the pipe joint is formed on the second member 3. A diameter of the first opening 4 is larger than a diameter of the second opening 5, and the diameter of the second opening 5 equals an outer diameter of the pipe joint. The second opening 5 has a sleeve 6 formed facing outward, for inserting the pipe joint.SELECTED DRAWING: Figure 1

Description

  The present invention seals a gap between a pit mounting table sealing member, in particular, a groove formed in a pit mounting table mounted on a buried valve base and a pipe joint passed through the groove. The present invention relates to a sealing member for a pit mounting table.

  A conventional installation structure of a fire hydrant as an embedded valve buried underground will be described with reference to the drawings.

  FIG. 8 is a plan view showing a conventional installation structure of a fire hydrant, FIG. 9 is a cross-sectional view showing the conventional installation structure of a fire hydrant, FIG. 10 is a view taken in the direction of arrow A in FIG. It is process drawing.

  8 to 10, 21 is a fire hydrant, and is configured so that water is discharged from a hose (not shown) connected to the water outlet 23 by rotating the valve opening / closing operation shaft 22 protruding from the top. Has been.

  Reference numeral 24 denotes a pipe joint, and a water pipe 25 as an embedded pipe is connected to both ends of the pipe joint. The fire hydrant 21 is connected to a start-up pipe 26 that is branched and connected to a pipe joint 24. The periphery of the pipe joint 24 is hardened by concrete 28 placed on the foundation 27 to prevent the hydrant 21 from being displaced or damaged during an earthquake or the like.

  Reference numeral 29 denotes a pit constructed around the fire hydrant 21 via a bottom plate 31, 30 denotes a receiving frame installed on the pit 29, and 32 denotes an iron lid fitted into the receiving frame 30.

  As shown in FIG. 11, the fire hydrant 21 was installed through the following steps (1) to (13).

(1) The fire hydrant 21 is connected to the pipe joint 24 connected to the water pipe 25 piped in the cut groove (fire hydrant connection process) via the rising pipe 26.
(2) Temporary construction of pits around the fire hydrant 21 (pit temporary construction process).
(3) Temporarily installing an iron lid in the pit (iron lid temporary installation step).
(4) Backfill the cut groove (backfill step).
(5) A restoration work is performed so that a vehicle or the like can travel on the road surface on the fire hydrant 21 (a restoration process).
(6) At a later date, the area around the fire hydrant 21 is excavated again (re-excavation process).
(7) A earth clasp is installed around the fire hydrant 21 (a soil retaining installation process).
(8) Install a formwork (formwork installation process).
(9) The concrete 28 is placed in the mold (concrete placing step).
(10) The bottom plate 31 is installed on the concrete 28 (bottom plate installation step).
(11) Build pits 29 on the bottom plate 31 (pit building step).
(12) The receiving frame 30 into which the iron lid 32 is fitted is installed on the pit 29 (receiving frame installation process).
(13) The periphery of the receiving frame 30 is backfilled and paved (paving process).

  The fire hydrant 21 was constructed through the steps (1) to (13) described above, but had the following problems.

  After connecting the fire hydrant 21 to the water pipe 25 via the rising pipe 26 as in the step (1), a pit is temporarily constructed around the fire hydrant 21 as in the step (2). After temporarily installing an iron lid in the pit as in (3), and then backfilling the cut groove as in step (4), and then performing a recovery operation as in step (5) Since it was necessary to excavate again at a later date as in the step (6), it took a lot of time and labor to construct the fire hydrant 21.

  If the steps (2) to (6) can be omitted, the construction time of the fire hydrant 21 can be greatly shortened, but this is because the road must be closed for a long time. I can't do it.

  In addition, a great deal of time and labor is required for the process performed after the re-excavation process of the process (6), the earth retaining installation process of the process (7), the form installation process of the process (8), and the concrete placing process of the process (9). Needed.

  Therefore, when a buried valve such as a fire hydrant buried underground is connected to a buried pipeline such as a water pipeline, a large amount of concrete placement process is not required in the formwork. An embedded valve base that can be carried out easily and in a short time has been proposed.

  As shown in FIG. 12, this embedded valve base A is composed of a base body 33 and a pit mounting table 34 which are mounted on a foundation 27 constructed below the embedded valve described later.

  As shown in FIG. 13, the base body 33 is made of metal, concrete, or resin, has a circular shape, and includes a plurality (three in this example) of base pieces 35. Since the base body 33 is composed of a plurality of base pieces 35, each base piece 35 can be connected independently, so that the foundation 27 on which the base body 33 is installed has some unevenness. The base body 33 can be stably installed on the foundation 27. In addition, by configuring the base body 33 with the plurality of base pieces 35, the base body 33 can be easily transported and loaded onto the foundation 27. The base pieces 35 are independent from each other, but the base pieces 35 may be connectable.

  The pit mounting table 34 is formed in a cylindrical shape and mounted on the base body 33. An inverted U-shaped groove 36 is formed on the peripheral wall of the pit mounting table 34 so as to be opposed thereto. The pit mounting table 34 is made of metal, concrete, or resin. The pit mounting table 34 is divided into two parts and can be connected to each other by bolts and nuts 37. By dividing the pit mounting table 34 so as to be connectable, the weight is reduced, and operations such as transportation of the pit mounting table 34 and installation on the base body 33 can be easily performed.

  Next, a case where a fire hydrant is constructed by the above-described buried valve base A will be described with reference to the drawings, taking a fire hydrant as an example of the buried valve.

  FIG. 14 is a front view showing a state in which the pipe joint is arranged above the base body, and FIG. 15 is a side view showing a state in which the pit mounting base is placed on the base body having the pipe joint. Fig. 17 is a plan view showing a state in which concrete is placed in the pit mounting table, Fig. 17 is a front view showing a state in which concrete is placed in the pit mounting table, and Fig. 18 is a lower pit on the pit mounting table. FIG. 19 is a partial cross-sectional view showing a fire hydrant that has been completed.

  14 to 19, reference numeral 21 denotes a fire hydrant provided with a valve opening / closing operation shaft 22, a water discharge port 23, and the like. Reference numeral 24 denotes a pipe joint disposed through the groove portion 36 of the pit mounting table 34. A water pipe 25 is connected to the pipe joint 24 (see FIG. 14). Reference numeral 26 denotes a rising pipe connected to the pipe joint 24. The base body 33 and the pipe joint 24 are integrated by concrete 28 placed in the pit mounting table 34. By integrating the base main body 33 and the pipe joint 24 with the concrete 28, it is possible to prevent displacement and damage of the fire hydrant 21 during an earthquake or the like.

  An example of the construction method of the fire hydrant 21 will be described below.

  First, the base body 33 is suspended on the foundation 27 constructed under the road surface of the construction site. Since the base body 33 is composed of a plurality of base pieces 35, this operation can be easily performed and the base body 33 can be stably placed on the foundation 27 even if the foundation 27 has some irregularities. Can be installed.

  Next, the pipe joint 24 is suspended above the base body 33 by a crane or the like (see FIG. 14).

  Next, water pipes 25 are connected to both ends of the pipe joint 24 (see FIG. 14).

  Next, the pit mounting table 34 is mounted on the base body 33 with the pipe joint 24 being passed through the groove 36 (see FIG. 15).

  Next, the fire hydrant 21 is connected to the rising pipe 26 of the pipe joint 24 (see FIGS. 16 and 17).

  Next, concrete 28 as a filler is placed in the pit mounting table 34, and the base body 33 and the pipe joint 24 are integrated. The filler may be other than concrete 28 (see FIGS. 16 and 17).

  Next, the pit 29 is constructed from the lower stage on the pit mounting table 34 (see FIGS. 18 and 19). The pit 29 can be easily constructed because it is sufficient to simply place the pit 29 on the pit mounting table 34.

  Next, the receiving frame 30 into which the iron lid 32 is fitted is installed on the pit 29 (see FIG. 19).

  And if the circumference | surroundings of the receiving frame 30 are backfilled and paved, installation of the fire hydrant 21 will be completed.

  The above is the case where a fire hydrant is connected to a water pipe using a buried valve base, but when a gate valve, air valve or drain plug as a buried valve is connected to a water pipe, Basically the same.

  According to the above buried valve base A, a temporary pit construction process, an iron lid temporary installation process, a backfill process, a recovery process, a re-excavation process, a earth retaining installation process, a formwork installation process, a concrete placing process, and a bottom plate installation process As a result, the installation of a buried valve such as a fire hydrant can be performed easily and in a short time.

  Further, according to this embedded valve base A, the base body 33 is constituted by a plurality of base pieces 35, so that the base 27 on which the base body 33 is installed has a slight unevenness. The base body 33 can be stably installed on the foundation 27.

  Further, according to the embedded valve base A, the base body 33 is configured by the plurality of base pieces 35, so that the base body 33 can be easily transported and loaded onto the foundation 27.

  Further, according to the embedded valve base A, the pit mounting table 34 is divided so as to be connectable, so that the pit mounting table 34 can be easily transported and loaded onto the base body 33.

  When installing the buried valve such as the fire hydrant 21 by the buried valve base A, the pit placing table 34 is placed on the base body 33 and the pipe joint 24 is passed through the groove 36. It is necessary to seal the gap (S) between the groove 36 and the pipe joint 24 (see FIGS. 12 and 15) to prevent the concrete 28 from flowing out of the pit mounting table 34.

  As a method for sealing the gap (S) between the groove 36 and the pipe joint 24, it is conceivable to fill the gap (S) with asphalt or the like, and this method takes time and labor.

  Accordingly, an object of the present invention is to easily and reliably seal a gap between a groove formed in a pit mounting table mounted on a buried valve base and a pipe joint passed through the groove. Another object is to provide a seal member for a pit mounting table.

  The present invention has been made to achieve the above object, and is characterized by the following.

  The invention according to claim 1 seals a gap between a groove formed in a pit mounting table mounted on the base body of the embedded valve base and a pipe joint passed through the groove. The pit mounting table sealing member comprises a plate-like first member attached to the surface of the groove and a plate-like second member attached to the surface of the first member. A first opening through which the pipe joint is passed is formed, and a second opening through which the pipe joint is passed is formed in the second member, and the first opening is larger than a diameter of the second opening, The diameter of the second opening is equal to the outer diameter of the pipe joint, and a sleeve into which the pipe joint is inserted is formed outwardly in the second opening. .

  The invention described in claim 2 is characterized in that, in the invention described in claim 1, the first member and the second member are made of resin.

  The invention according to claim 3 is characterized in that, in the invention according to claim 1 or 2, the first member is formed with a first slit reaching the first opening.

  The invention according to claim 4 is characterized in that, in the invention according to claim 1 or 2, the second member is formed with a second slit reaching the second opening.

  The invention described in claim 5 is characterized in that, in the invention described in claim 1 or 2, the first member is divided so as to be connectable to a plurality of members.

  The invention described in claim 6 is characterized in that, in the invention described in claim 1 or 2, the second member is divided so as to be connectable to a plurality of members.

  The invention according to claim 7 is characterized in that, in the invention according to any one of claims 1 to 6, the first member is mounted on the surface of the groove portion by being attached. .

  According to an eighth aspect of the present invention, in the invention according to any one of the first to sixth aspects, a hook is provided on a back surface of the first member, and the first member is interposed via the hook. It is characterized by being mounted on the surface of the groove.

  The invention according to claim 9 is the invention according to any one of claims 1 to 8, wherein the second member is mounted on a surface of the first member by attaching the sleeve to the pipe joint. Is characterized by

  According to this invention, the clearance gap between the groove part formed in the pit mounting base of the base for embedded valves, and the pipe joint penetrated in this groove part can be sealed easily and reliably.

  According to the present invention, the second member is formed to have a smaller diameter than the first member, and the diameter of the first opening of the first member is made larger than the diameter of the second opening of the second member, whereby the tube in the groove portion It is possible to cope with the displacement of the joint.

  Further, according to the present invention, since the first member can be expanded and the pipe joint can be passed by forming the first slit in the first member, the first to the surface of the groove portion through which the pipe joint 24 is passed is provided. The member can be easily mounted. Note that the first member can be easily mounted on the surface of the groove portion through which the pipe joint is passed by dividing the first member to be connectable.

  Further, according to the present invention, since the second member can be expanded and the pipe joint can be passed by forming the second slit in the second member, the second member can be passed through the surface of the first member through which the pipe joint has been passed. Two members can be easily mounted. The second member can be easily mounted on the surface of the groove portion through which the pipe joint 24 is passed by dividing the second member so as to be connectable.

  Further, according to the present invention, a sleeve is formed outwardly in the second opening of the second member, and the sleeve is affixed to the pipe joint with an adhesive tape or the like, thereby filling concrete or the like from the pit mounting table. The outflow of the material can be more reliably prevented.

  Further, according to the present invention, by providing the hook that engages with the groove on the back surface of the first member, the first member can be easily attached to the surface of the groove.

It is a perspective view which shows the sealing member for pit mounting bases of this invention. It is the perspective view which looked at the 1st member of the sealing member for pit mounting bases of this invention from the front side. It is the perspective view which looked at the 2nd member of the sealing member for pit mounting bases of this invention from the front side. It is the perspective view which looked at the 2nd member of the sealing member for pit mounting bases of this invention from the back side. It is a perspective view which shows the state which mounted | wore the surface of the groove part of the pit mounting base with the 1st member of the sealing member for pit mounting bases of this invention. It is a perspective view which shows the state which mounted | wore the surface of the 1st member with the 2nd member of the sealing member for pit mounting bases of this invention. It is a reverse view which shows the state which mounted | wore the groove part with the sealing member for pit mounting bases of this invention through the hook. It is a top view which shows the conventional installation structure of a fire hydrant. It is sectional drawing which shows the conventional installation structure of a fire hydrant. It is A arrow directional view of FIG. It is a standard construction process diagram of a fire hydrant. It is a perspective view which shows the state which installed the pipe joint in the base for buried valves. It is a perspective view which shows the base main body of the base for embedded valves. It is a front view which shows the state which has distribute | arranged the pipe joint above the base main body. It is a side view which shows the state which mounted the pit mounting base on the base main body which has arrange | positioned the pipe joint. It is a top view which shows the state which laid concrete in the pit mounting base. It is a front view which shows the state which laid concrete in the pit mounting base. It is sectional drawing which shows the state which installed the lower stage pit on the pit mounting base. It is a fragmentary sectional view which shows the fire hydrant which construction was completed.

  Next, an embodiment of the pit mounting table sealing member of the present invention will be described with reference to the drawings.

  FIG. 1 is a perspective view showing a sealing member for a pit mounting table according to the present invention, FIG. 2 is a perspective view of the first member of the sealing member for a pit mounting table according to the present invention as viewed from the front side, and FIG. The perspective view which looked at the 2nd member of the sealing member for pit mounting tables from the front side, FIG. 4 is the perspective view which looked at the 2nd member of the sealing member for pit mounting tables of this invention from the back side, and FIG. The perspective view which shows the state which mounted | wore the surface of the groove part of the pit mounting base with the 1st member of the sealing member for pit mounting bases, FIG. 6 shows the 2nd member of the sealing member for pit mounting bases of this invention on the surface of a 1st member It is a perspective view which shows the state mounted | worn to.

  As shown in FIG. 1, a pit mounting table sealing member 1 according to the present invention includes a plate-like first member 2 and a plate-like second member 3 mounted on the surface of the first member 2. The first member 2 and the second member 3 are made of resin, for example.

  The first member 2 is mounted on the surface of the groove portion 36 formed in the pit mounting table 34 mounted on the base body 33 of the embedded valve base A (see FIG. 5). The embedded valve base A has the same configuration as the embedded valve base shown in FIG. The second member 3 has a smaller diameter than the first member 2 and is attached to the surface of the first member 2 (see FIG. 6). For mounting the first member 2, for example, an adhesive tape is used.

  As shown in FIG. 7, a hook 9 that also serves as a reinforcement is provided on the back surface of the first member 2 to be engaged with the groove portion 36, and the first member 2 is attached to the surface of the groove portion 36 via the hook 9. Also good.

  The first member 2 is formed with a first opening 4 through which the pipe joint 24 is passed, and the second member 3 is formed with a second opening 5 through which the pipe joint 24 is passed.

  The diameter of the first opening 4 is larger than the diameter of the second opening 5, and the diameter of the second opening 5 is equal to the outer diameter of the pipe joint 24. By making the diameter of the first opening 4 larger than the diameter of the second opening 5, it is possible to cope with the displacement of the pipe joint 24.

  In the second opening 5, a sleeve 6 into which the pipe joint 24 is inserted is formed outward. In this way, the sleeve 6 is formed in the second opening 5, the sleeve 6 is attached to the pipe joint 24 with an adhesive tape or the like, and the second member 3 is mounted on the surface of the first member 2, thereby providing a pit mounting table. The outflow of the filler such as concrete 28 from inside 34 can be more reliably prevented.

  A first slit 7 reaching the first opening 4 is formed in the first member 2, and a second slit 8 reaching the second opening 5 is formed in the second member 3.

  By forming the first slit 7 in the first member 2, the first member 2 can be easily mounted on the surface of the groove portion 36 through which the pipe joint 24 is passed. Further, by forming the second slit 8 in the second member 3, the second member 3 can be easily attached to the surface of the first member 2 through which the pipe joint 24 is passed.

  Note that the first member 2 can be easily attached to the surface of the groove portion 36 by, for example, dividing the first member 2 into two parts and fitting the pipe joints 24 therebetween. Similarly, for the second member 3, the second member 3 can be easily connected to the surface of the groove portion 36 by dividing the second member 3 into two parts, for example, by sandwiching the pipe joint 24. .

  According to the pit mounting table sealing member 1 of the present invention, the gap (S) between the groove portion 36 formed in the pit mounting table 34 and the pipe joint 24 passed through the groove portion 36 as follows. Can be sealed.

  First, as shown in FIG. 5, the 1st member 2 is affixed on the surface of the groove part 36 with which the pipe joint 24 was passed with an adhesive tape. At this time, since the first slit 2 is formed in the first member 2, the first member 2 can be expanded and the pipe joint 24 can be passed through even after the pipe joint 24 is installed. The first member 2 can be attached to the surface of the groove 36.

  Next, as shown in FIG. 6, the second member 3 is brought into close contact with the surface of the first member 2 and attached to the pipe joint 24 so as to surround the pipe joint 24, and the sleeve 6 is attached to the pipe joint 24 with an adhesive tape or the like. . As a result, the outflow of the filler such as concrete 28 from the pit mounting table 34 can be more reliably prevented. Since the second slit 8 is formed in the second member 3 when the first member 2 is mounted, the second member 3 can be expanded and the pipe joint 24 can be passed through like the first member 2. Thus, the second member 3 can be easily attached to the surface of the first member 2.

  The second member 3 is smaller in diameter than the first member 2, and the diameter of the first opening 4 of the first member 2 is larger than the diameter of the second opening 5 of the second member 3. 2 is affixed to the surface of the groove portion 36 of the pit mounting table 34, and the second member 3 is fixed to the pipe joint 24 with an adhesive tape. Even if there is, there is no gap between the first member 2 and the second member 3, and this can be dealt with without impairing the sealing function.

  In this way, the gap (S) between the groove portion 36 and the pipe joint 24 passed through the groove portion 36 is surely sealed by the pit mounting table sealing member 1. It is possible to more reliably prevent the filler such as the concrete 28 from flowing out.

  Note that the buried valve base A may be backfilled before placing a filler such as concrete 28 in the pit placing table 34. In this case as well, backfill soil into the pit placing table 34 may be filled. Inflow can be reliably prevented.

  As described above, according to the present invention, the gap (S between the groove portion 36 formed in the pit mounting base 34 of the embedded valve base A and the pipe joint 24 passed through the groove portion 36 (S ) Can be easily and reliably sealed.

  Further, according to the present invention, the second member 3 is formed with a smaller diameter than the first member 2, and the diameter of the first opening 4 of the first member 2 is made larger than the diameter of the second opening 5 of the second member 3. Therefore, it is possible to cope with the positional deviation of the pipe joint 24 in the groove 36.

  Further, according to the present invention, by forming the first slit 7 in the first member 2, the first member 2 can be expanded and the pipe joint 24 can be passed therethrough, so that the groove 36 through which the pipe joint 24 is passed is formed. The first member 2 can be easily attached to the surface. The first member 2 can be easily mounted on the surface of the groove 36 through which the pipe joint 24 is passed by dividing the first member 2 so as to be connectable.

  According to the present invention, the second slit 8 is formed in the second member 3 so that the second member 3 can be expanded and the pipe joint 24 can be passed therethrough. Therefore, the first member through which the pipe joint 24 is passed. The second member 3 can be easily attached to the surface of 2. Note that the second member 3 can be easily attached to the surface of the groove 36 through which the pipe joint 24 is passed by dividing the second member 3 so as to be connectable.

  In addition, according to the present invention, the sleeve 6 is formed outwardly in the second opening 5 of the second member 3 and the sleeve 6 is attached to the pipe joint 24 with an adhesive tape or the like, so that the inside of the pit mounting table 34 is It is possible to more reliably prevent the filler such as concrete 28 from flowing out from.

  Moreover, according to this invention, by providing the hook 9 engaged with the groove part 36 on the back surface of the first member 2, the first member 2 can be easily attached to the surface of the groove part.

1: Seal member for pit mounting table 2: First member 3: Second member 4: First opening 5: Second opening 6: Sleeve 7: First slit 8: Second slit 9: Hook 21: Fire hydrant 22: Valve Opening / closing operation shaft 23: Water outlet 24: Pipe joint 25: Water pipe 26: Startup pipe 27: Foundation 28: Concrete 29: Pit 30: Receiving frame 31: Bottom plate 32: Iron lid 33: Base body 34: Pit mounting base 35: Base piece 36: Groove 37: Bolt / Nut

Claims (9)

In the seal member for the pit mounting table that seals the gap between the groove formed in the pit mounting table mounted on the base body of the embedded valve base and the pipe joint passed through the groove,
It consists of a plate-shaped first member mounted on the surface of the groove and a plate-shaped second member mounted on the surface of the first member, and the first member through which the pipe joint is passed. An opening is formed, and the second member is formed with a second opening through which the pipe joint is passed. The first opening is larger than the diameter of the second opening, and the diameter of the second opening is A seal member for a pit mounting table, characterized in that a sleeve into which the pipe joint is inserted is formed outwardly in the second opening, which is equal to the outer diameter of the pipe joint.   The pit mounting table sealing member according to claim 1, wherein the first member and the second member are made of resin.   The pit mounting table sealing member according to claim 1, wherein the first member has a first slit reaching the first opening.   The pit mounting table sealing member according to claim 1, wherein the second member is formed with a second slit reaching the second opening.   The pit mounting table sealing member according to claim 1, wherein the first member is divided so as to be connected to a plurality of members.   3. The pit mounting table sealing member according to claim 1, wherein the second member is divided so as to be connectable to a plurality of parts. 4.   The pit mounting table sealing member according to any one of claims 1 to 6, wherein the first member is attached to a surface of the groove portion by pasting.   The back surface of the first member is provided with a hook, and the first member is attached to the surface of the groove portion via the hook. The sealing member for pit mounting tables as described.   The pit mounting table seal according to any one of claims 1 to 8, wherein the second member is attached to a surface of the first member by attaching the sleeve to the pipe joint. Element.

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