JP3184617U - Water stop plug device - Google Patents

Abstract

[PROBLEMS] To provide a water stop plug device used for repair work of water supply pipes, in which only water distribution branch pipes are closed without closing the water distribution main pipe. Providing a water stop plug device that can be fitted with a new valve and replace the pipe.
A ring-shaped head front 15 and a head rear 16 for sandwiching a water blocking plug 13 made of synthetic rubber. The head rear 16 is drawn and pressed against a shaft portion provided at the center thereof, and the water blocking plug is attached. A tightening nut 19 for pressing and deforming the deformation is screwed, and the water stop plug is detachably attached to the tip of the guide tube for inserting and removing the target position through the head front. Suppose that
[Selection] Figure 1

Description

  The present invention relates to a water stop plug device, in particular, a water stop plug device used for repair work of water supply pipes. It is related with the water stop plug apparatus which can achieve the objectives, such as attachment of a new pipe stopper (capping), a new valve, and pipe replacement.

  Conventionally, when constructing a distribution branch that is branched from the main distribution pipe and connected to the water supply pipe, it is necessary to close the water control valves installed in the main distribution pipe and shut off the main distribution pipe. There is a big negative impact on the construction area.

JP 2013-7232 A

  The problem to be solved by the present invention is that there has been no known water stop plug device that can eliminate the need to shut off the main water pipe when constructing the water distribution branch pipe.

  In order to solve the above-mentioned problems, a water stop plug device according to the present invention has a ring-shaped head front and a head rear that sandwich a water stop plug made of synthetic rubber, and a shaft portion provided at the center thereof. The head rear is pulled and pressed, and a fastening nut for expanding and deforming the water stop plug is screwed, and the water stop plug is inserted into and removed from the target position via the head front. It is characterized in that it is detachably attached to the tip of the guide tube.

  Further, the water stop plug device according to the present invention is characterized in that the above-mentioned detachable attachment is screwed, and the above-mentioned shaft portion is inserted into an insertion hole in which the opening edge of the head front is extended inward. The center of the shaft or the head rear is integrally extended rearward, and the front of the head rear is pushed against the inner wall of the pipe which is pushed and expanded by the head rear to stop water. It is characterized by having a claw body that presses and locks the position within the tube.

  The water stop plug device according to the present invention is configured as described above. For this reason, by using this water stop plug device, even if the control valve of the water main is not closed and the water is not shut off, the water plug temporarily operates to pass water from the water main to the water distribution branch by the action of the water stop plug. The necessary work can be stopped, and the necessary work can be performed. The work can be immediately restored to the initial state upon completion of the work. The impact on the work area is small, and the time and cost of the work can be reduced.

It is a figure which shows the water stop plug apparatus which implemented this invention. It is a figure which shows the 2nd Example of a water stop plug apparatus.

  This was realized by configuring as illustrated in the drawings and described in the examples.

  Next, an example of a preferred embodiment of the present invention will be described with reference to the drawings. In FIG. 1, reference numeral 13 denotes a water stop plug. The water stop plug 13 has a cylindrical shape made of synthetic rubber and is sandwiched between a head front 15 and a head rear 16. The head front 15 and the head rear 16 are formed in a ring shape, and an inner opening edge of the head front 15 extends inward to form a wall 15 a that forms an insertion hole for the center shaft 17. The front end of the wall 15a enters the central hole of the head rear 16 with a surplus space S, and by moving the position of the head rear 16 by this space S, the water stop plug 13 is pressed and compressed to be expanded and deformed. The water flow from the water distribution main is stopped by bringing 13 into close contact with the inner wall of the water distribution branch.

  The center shaft 17 inserted into the insertion hole is protruded at one end toward the head front 15 side, and is tightened to a screw portion 17a engraved on the head front 15 side of the center shaft 17 via the rotation receiving plate 18. A nut 19 is screwed. Reference numeral 20 denotes a retaining nut that is screwed onto the threaded portion 17 a of the center shaft 17 protruding from the tightening nut 19.

  Further, a cylindrical standing wall 21 is integrally formed on the tightening nut 19 side of the head front 15 so as to surround the protruding portion of the center shaft 17 and a part of the tightening nut 19. The distal end of the guide tube 14 for screwing the water stop plug 13 into the target position, particularly into the water distribution branch to be constructed, and pulling it out and removing it is screwed into the formed screw portion 21a. The water stop plug 13 and the guide tube 14 are integrated. The threaded engagement between the threaded portion 21a and the guide tube 14 is not limited to this, and may be airtight pressure fitting or engagement using a hook or a claw, as long as it can be detached. .

  A positioning lock claw mechanism 22 is attached to the protruding portion of the center shaft 17 on the head rear 16 side, and the claw mechanism 22 is supported by a retaining member 23. In this embodiment, the claw mechanism 22 is provided with a pair of claw bodies 24, 24 at symmetrical positions with a pitch of 180 degrees, with the heads being attached to the pivot pins 25, 25 so as to be pivotable. . The side surfaces of the heads of the claws 24, 24 have an arc shape, and are arranged so that a portion closer to the outside contacts the front surface of the head rear 16. Note that the nail bodies 24, 24 are not limited to a pair, and three or more can be provided radially.

  A pair of wing members 26, 26 are provided on the tip side of the claw mechanism 22 corresponding to the claw bodies 24, 24. Guide pins 27, 27 corresponding to guide grooves 24 a formed in the claw body 24 are provided at the protruding end portions of the wing members 26, 26. A coil spring 29 is stretched between the guide pins 27 and 27 and a spring receiver 28 formed on the inner upper side of the claw bodies 24 and 24 of the claw mechanism 22 so that the claw body 24 is always moved in the closing direction. Energized.

  In the water stop plug device according to the first embodiment, when the tightening nut 19 is tightened with a nut driver, the center shaft 17 screwed with the tightening nut 19 is pulled, and the head rear 16 is pushed by the claw mechanism 22. The pressing deformation of the water stop plug 13 is started. At the same time, the outer surfaces of the heads of the claws 24 and 24 are pivoted in pressure contact with the front surface of the head rear 16, and the tips of the claws 24 and 24 are expanded against the urging force of the coil spring 29. The inner wall surface of the water distribution branch that is inserted is pressed against the inner wall surface to be positioned and locked. When the tightening nut 19 is rotated in the reverse direction by the nut driver, the center shaft 17 is pushed, the water stop plug 13 is released from the pressure and restored, and the claws 24 and 24 are also attached to the coil spring 29. It will be in the initial state with the help of power.

  Next, a second embodiment of the present invention will be described with reference to FIG. In the second embodiment, parts common to the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted. In the second embodiment, the central portion of the head rear 30 is integrally extended to the back, the shaft portion 31 is formed by the extension, and the screw portion 31a is engraved on the outer periphery of the shaft portion 31. It has become.

  In addition, a cylindrical hanging wall 32 a is formed at the center portion of the head front 32, and a space S is formed between the hanging wall 32 a and the shaft portion 31 to ensure a movable range of the head rear 30. When the tightening nut 19 is tightened with a nut driver, the shaft portion 31 is drawn, and the head rear 30 presses the water stop plug 13 provided between the head front 32 and is expanded and deformed in the same manner as in the first embodiment. Yes, the cancellation is the same.

  Here, an outline of the repair work of the water distribution branch for using the water stop plug device will be described. Generally, the water distribution branch is branched by joining to a T-shaped pipe provided in the water distribution main. A flange cylinder with a saddle is attached to this water distribution branch, a through hole is drilled in the water distribution branch with a ring cutter through the flange cylinder, a water stopcock is press-fitted from the through hole, and water is passed through the water distribution branch. Stop.

  After confirming the water stop, the water distribution branch is cut at a designated position on the secondary side of the stop cock, and the secondary pipe is removed from the cut location. A short flange pipe is installed in the cut opening of the water distribution branch pipe. In addition, positioning means for positioning and locking the guide pipe 14 of the water stop plug device, for example, a ring body having a cut in part is installed. The guide pipe 14 is positioned and locked by the positioning means, and the water stop plug device is inserted from the cut opening of the water distribution branch pipe. By fixing the positioning means to the short flange tube, the backward movement of the guide tube 14 is also stopped. After the insertion of the water stop plug device, the water stop cock is pulled up to allow the water distribution branch to pass through.

  After insertion of the water stop plug device, a retaining arm is installed behind the T-shaped tube and the guide tube, a cap is put on the rear end of the guide tube 14, and the guide tube 14 can be pushed. The water stop plug 13 can be pushed into the T-shaped pipe to stop the water flow from the water distribution main, and a new valve can be assembled to the water distribution branch, or the water main can be plugged.

DESCRIPTION OF SYMBOLS 13 Water stop plug 14 Guide pipe 15,32 Head front 15a Wall body 16,30 Head rear 17 Center shaft 17a, 21a, 31a Screw part 18 Rotation receiving plate 19 Tightening nut 20 Retaining nut 22 Claw mechanism 23 Retaining member 24 Claw body 24a Guide groove 25 Pivot pin 26 Wing member 27 Guide pin 28 Spring receiver 29 Coil spring 31 Shaft portion 32a Vertical wall S Space

Claims (4)

  A ring-shaped head front and head rear holding a synthetic rubber water stop plug, tightening to pull and press the head rear against the shaft provided at the center, and to expand and deform the water stop plug A nut is screwed, and the water stop plug is detachably attached to the distal end of a guide tube for inserting into and removing from the target position via the head front. Water stop plug device.   The waterproof plug device according to claim 1, wherein the detachable attachment is screwed.   The shaft portion described above is a shaft inserted into an insertion hole in which an opening edge of a head front is extended inward, or a center of a head rear portion is integrally extended rearward. The water stop plug device according to 2.   2. A claw body which is provided in front of the head rear and has a rear end pushed by the head rear to expand, presses against the inner wall of the pipe to stop water, and locks the position in the pipe. The water stop plug device according to claim 1.

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