JP3254182B2 - Consolidated water pipe facility - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention mainly relates to a backflow of water in a water supply piping system which is interposed at a required position in a water supply piping system for supplying fire extinguishing water to a fire extinguishing system for a building such as a building. The present invention relates to a connected water pipe system having functions such as prevention, air removal, and temporary drainage.

[0002]

2. Description of the Related Art Generally, a firefighting facility for extinguishing a fire at an early stage when a fire starts is installed in a high-rise building. In other words, a water storage tank for storing fire extinguishing water at all times is installed on the roof of the building.
When a fire breaks out on more than one floor, the fire extinguishing water in the water storage tank is discharged from the water discharge hose provided for each floor so that the fire can be extinguished in the early stage of the fire. When replenishing water to the water storage tank, connect the water discharge hose of a fire pump car to the water outlet of a water pipe (generally referred to as a water outlet) that is set up outdoors, and activate the fire pump to activate the building. Water is supplied to the water storage tank through the water supply piping system inside. In addition, the above-mentioned water supply piping system is branched to each floor and connected to water discharge equipment provided with a water discharge hose or the like, respectively. Fire extinguishing water can be supplied to the water discharge facility on the required floor through the facility.

[0003] It is required by standards that the above-mentioned water supply piping system be provided with a connection water supply pipe facility. This connection water supply pipe system is provided with a drain valve, a check valve, and a water stop valve, and these valves are inserted and connected to a water supply piping system and housed in an outer body box.

[0004]

However, installation of the conventional connection water pipe system has a problem that it takes a complicated and time-consuming operation or the like, and takes too much construction time. That is, first, a place to be installed is excavated to form an installation recess having a required shape, and then a peripheral wall formed of a concrete block wall or a concrete wall is formed along the inner peripheral surface of the installation recess. In building the box, it takes time to stack concrete blocks or to assemble a form for injecting concrete milk, and in each case, to form a concrete milk box. I have to wait for the drying.

Further, when assembling a drain valve, a check valve, a water stop valve, and the like, a pipe is cut in accordance with the dimensions of the outer body box made as described above, and connecting pipes are connected to both ends of the pipe. The flange is fixed by welding, and a mounting hole is drilled on the side of the pipe, a socket is fixed to the mounting hole by welding, and a drain valve is connected to the socket. It is performed in a procedure in which these are united through a water stop valve unit. Therefore, since necessary parts are assembled and assembled at the construction site, complicated operations such as adjustment of necessary parts and dimensional adjustment are required. In addition, an outer body case is constructed in advance, and each part is assembled. Therefore, work with poor workability in a narrow space is forced, and the work time is inevitably long. In addition, if necessary parts are missing or defective at the site, construction troubles occur. As described above, when the operation time is long, the installation cost increases as the number of operation steps increases. Further, the length of the piping system becomes large, and it is difficult to reduce the size.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a compact water supply piping system which can be easily installed in a very short time and is compact.

[0007]

In order to achieve the above object, the present invention relates to a connecting water supply piping system comprising an upstream short pipe, a check valve unit having a check valve in the short pipe, and a check valve in the short pipe. A water shutoff valve unit having a water shutoff valve, a downstream short pipe, a joint connecting these short pipes, and a water passage attached to at least one of the joints and formed in the short pipe. A drain valve is provided.

According to the present invention, if the upstream short pipe, the check valve unit, the water shutoff valve unit, and the downstream short pipe are manufactured in advance as standard products of different sizes, it is possible to meet the installation site. Select the upstream short pipe, check valve unit, water stop valve unit and downstream short pipe of the dimensions, connect them with a joint, and attach a drain valve to one of the joints. The valve unit mechanism can be assembled. Further, this valve unit mechanism can be housed in a housing case or the like manufactured in advance as a standard. Therefore, it is possible to easily and reliably install the connection water supply piping equipment in a very short time.

Further, according to the present invention, since the drain valve is attached to one of the joints, the overall length of the valve unit mechanism can be shortened, and the equipment can be made compact.

[0010] In the above invention, the short pipe is provided with an engaging ridge on the outer periphery of the connection end, the joint is a holding ring comprising a pair of semicircular rings, and an annular packing provided on the inner circumference of the holding ring. A pair of locking grooves which are provided on the left and right ends of the inner periphery of the holding ring and which are locked to the engaging ridges. Each of the short pipes is sealed by the annular packing, and the short pipes are connected to each other by the joint in a state in which the engaging ridge of the short pipe is held by the locking groove. The pipes can be connected very quickly, and the short pipes are connected flexibly to dimensional errors due to the flexibility of the annular packing, so that the work of disposing the pipes in the housing case or the like becomes extremely easy.

In the above invention, at least one of the joints is characterized in that a drainage passage communicating with the outside is formed in an annular packing, and a drainage valve mounting portion communicating with the drainage passage is provided on a holding ring. With such a configuration, the joint can be manufactured at low cost despite having both the original function of the joint and the function of the drain valve mounting portion.

In the above invention, the upstream short pipe, the check valve unit, the water stop valve unit, the downstream short pipe, and the drain valve are housed in the housing case, and the housing case is provided on the opposite side surface of the case main body. In addition, an insertion portion for the downstream short tube is formed, and the upper end opening of the case main body is covered with a lid so as to be freely opened and closed.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 and FIG. 2 show a connected water supply piping system according to an embodiment of the present invention, and FIG.
FIG. 2 is a longitudinal sectional front view thereof. In these figures, the connection water supply piping system is composed of a valve unit mechanism 1, a storage case 2 of the valve unit mechanism 1, and a lid 3 covering an upper end opening of the storage case 2. I have. The valve unit mechanism 1 is provided at a predetermined position in a water supply pipe system for supplying fire-extinguishing water from a water supply port A to a water storage tank B installed on the roof of a building, and is located upstream of the water supply port A side. The short pipe 7, the check valve unit 9 having the check valve 9b in the short pipe 9a, the water stop valve unit 11 having the water stop valve 11b in the short pipe 11a, and the downstream short pipe on the water storage tank B side. 13
It has. 1 and 2, 5 is a drain valve, 5a is an operation handle of the drain valve 5, and 11c is a water stop valve 1.
Reference numerals 1b, 31 and 32 denote short tube insertion portions provided on the side wall of the main body of the housing case 2.

The upstream short pipe 7 and the check valve unit 9 are connected by a joint 8 to which the drain valve 5 is attached, and the check valve unit 9 and the water stop valve unit 11 are connected by a joint 10 to form a water stop valve. The unit 11 and the downstream short pipe 13 are connected by a joint 12.

At the outer periphery of both ends of each short pipe 7, 9a, 11a, 13 an engaging ridge 14 made of a C-shaped metal wire is disposed around and fixed to each short pipe 7, 9a, 11a, 13 by welding. ing. As shown in FIG. 3, the joint 10 includes a holding ring 21 made of a pair of upper and lower semicircular metal half rings 21a and 21b, and a rubber annular packing 22 divided into upper and lower parts. 21a, 21b
Are detachably connected by bolts and nuts 23. A pair of locking grooves 24 for locking the engaging ridges 14 are provided on the inner periphery of the holding ring 21 at left and right ends thereof, and the annular packing 22 is press-fitted at the center thereof. A packing holding groove 25 for holding in a fitted state is provided around. As shown in FIG. 3, the annular packing 22 held in the packing holding groove 25 is formed in a cross-sectional horizontal C shape, and both sides 22a are pressed against the short pipes 9a and 11a, and a water supply passage is formed in the inner space 22b. It is configured so that the water introduced from through the gap is filled. At the connection
The short tubes 9a and 11a are opposed to each other with a gap therebetween, and this gap is sealed by the annular packing 22.
The short pipes 9a and 11a are connected to each other by the joint 10 while the engaging ridge 14a is held by the locking groove 24. FIG. 3 shows a case in which the check valve unit 9 and the water stop valve unit 11 are connected using the joint 10, but the short pipe 11 a of the water stop valve unit 11 and the downstream short pipe 1 are connected.
3 is connected using the joint 12 as in the case shown in FIG.

The upstream short pipe 7 and the short pipe 9 of the check valve unit 9
a, which is basically the same as the joints 10 and 12, but forms a drain passage 26 in the annular packing 22 and holds the annular packing 22 as shown in FIGS. It is characterized in that a screw hole (drain valve mounting portion) 27 for mounting the drain valve 5 on the ring 21 is provided. The drain valve 5 is screwed into the screw hole 27, and the water in the water supply passage is guided to the drain valve 5 through the inner space 22 b of the annular packing 22, the drain passage 26, and the screw hole 27. Have been.

The present invention can be configured in various modes in addition to the above embodiment. For example, the water shutoff valve unit 11
The structure of the joint 12 connecting the short pipe 11a and the downstream short pipe 13 has a drain passage 26 and a screw hole 27 as shown in FIGS. Or the second drain valve can be attached when necessary by closing the screw hole 27 with a plug.

[0019]

According to the present invention, it is possible to provide an installation work which can be carried out quickly and a compact connecting water pipe system.

[Brief description of the drawings]

FIG. 1 is a partially broken plan view showing an embodiment of the present invention.

FIG. 2 is a longitudinal sectional front view thereof.

FIG. 3 is a partially broken perspective view showing a joint.

FIG. 4 is a longitudinal sectional front view showing a joint to which a drain valve can be attached.

FIG. 5 is a partially broken side view.

[Explanation of symbols]

 2 Housing case 3 Lid 5 Drain valve 7 Upstream short pipe 8 Joint 9a Short pipe 9b Check valve 9 Check valve unit 10 Joint 11a Short pipe 11b Water stop valve 11 Water stop valve unit 12 Joint 13 Downstream short pipe 14 Protrusions for engagement 21 Retaining ring 22 Annular packing 24 Locking groove 26 Drain passage 27 Drain valve mounting part

Claims (4)

(57) [Claims] An upstream short pipe, a check valve unit having a check valve in the short pipe, a water stop valve unit having a water stop valve in the short pipe, a downstream short pipe, A connection water supply pipe system comprising: a joint for connecting a pipe; and a drain valve attached to at least one of the joints and communicating with a water passage formed in the short pipe. 2. The short pipe has an engaging ridge on the outer periphery of the connection end, and the joint has a holding ring composed of a pair of semicircular rings, an annular packing provided on the inner periphery of the holding ring, and a holding ring. And a pair of locking grooves which are provided on the left and right ends of the inner circumference of the inner pipe to lock the engaging ridges. 2. The connected water pipe system according to claim 1, wherein the short pipes are connected to each other by the joint while being sealed by packing, and the engagement ridges of the short pipes are held by the locking grooves. 3. . 3. At least one of the joints is characterized in that a drain passage communicating with the outside is formed in an annular packing, and a drain valve mounting portion communicating with the drain passage is provided on a holding ring. The connected water pipe system according to claim 2. 4. An upstream short pipe, a check valve unit, a water stop valve unit, a downstream short pipe, and a drain valve are housed in a housing case,
The housing case is configured such that an upstream short pipe and a downstream short pipe insertion portion are formed on opposing side surfaces of the case main body, and an upper end opening of the case main body is covered with a lid so as to be freely opened and closed. The connected water pipe system according to any one of claims 1 to 3, wherein: