JPH051753Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a piping connection structure that allows convenient installation and removal of a control unit for controlling water supply for domestic use.

(Prior Art) The applicant of the present application first developed a water supply control unit as disclosed in, for example, Japanese Utility Model Publication No. 59-20458, as a means for properly supplying water.

By using the above-mentioned control unit, the backflow of tap water can be prevented and the amount of tap water supplied can be stabilized, and the trouble of burying water meters, various valves, etc. individually underground can be saved. However, in the past, when connecting this to external water pipes buried underground, etc., a flange-type joint was used and tightened with bolts, etc. Ta.

(Problems to be Solved by the Invention) However, with the above-mentioned conventional control unit mounting means, the tightening of bolts, etc. is complicated and the installation work is difficult, and the control unit must be periodically removed after installation. Also, in the case of sudden repairs or maintenance inspections, the removal work is as complicated as the installation, and there are major difficulties in workability and handling. In particular, such problems become more serious when this type of control unit is buried in a narrow pit excavated deep underground.

The present invention was devised in view of the conventional problems as described above, and its purpose is to connect a water supply control unit to external piping in a detachable manner by a simple means. be.

(Means for Solving the Problems) The present invention has been constructed to achieve the above objectives and to solve the problems of the conventional methods. A piping joint 6, which is formed by reciprocatingly connecting a slide pipe 10 to the distal end side of the joint body 7, is interposed between both the control unit 1 and the external pipe body 5. One side of the two is connected to the rear end side of the joint body 7, and the other side of both 1 and 5 is connected to the distal end of the slide tube 10 so that it can be freely moved toward and away from the slide tube 10 by reciprocating the slide tube 10. It is at the point where it becomes.

(Function) Therefore, in the pipe connection structure of the water supply control unit characterized by the above configuration, the control unit 1
The work of attaching and detaching the piping to and from the external pipe body 5 can be accomplished by simply moving the slide pipe 10 of the pipe joint 6 back and forth to bring it into contact with and separating from the control unit 1 or the external pipe body 5.

(Example) Examples of the present invention will be described below.

In Fig. 1, reference numeral 1 indicates a water supply control unit, and the control unit 1 includes various water supply systems such as a stop valve 3, a strainer 3a, a water meter 3b, a check valve or a constant flow valve 3c in a box 2. The various water supply equipment 3, 3a, etc. are connected together in a series with elbow pipes and housed in a compact manner, and the connection between each of the various water supply equipment 3, 3a... is similar to the pipe joint 6 described later. It is used. Reference numerals 4 and 4a indicate short receiving pipes protruding from both sides of the box 2, which are connected to the internal piping of the box 2. Reference numerals 5 and 5a indicate external pipe bodies for supplying tap water and for receiving water, respectively.

Reference numerals 6, 6 indicate piping joints provided between the outer pipe bodies 5, 5a and the receiving pipes 4, 4a, and the joints 6
The configuration will be explained with reference to FIG.

Reference numeral 7 indicates a hollow joint main body having a connecting opening 8 at the rear end for screwing onto the distal end of the tube body 5, and on the distal end side of the joint main body 7,
A slide tube 10 having a connecting opening 9 that can be tightly fitted into one of the receiving tubes 4 of the control unit 1 is slidably inserted therein. Reference numeral 11 denotes a guide piece having a semicircular arc cross section and projecting from the lower part of the tip of the slide tube 10. Reference numeral 12 denotes a ball-shaped valve seat 14, which is seated on valve seat seats 14, 14 provided in the flow path 13 in the slide tube 10, and allows the flow path 13 in the slide tube 10 to be opened and closed by rotation of the valve shaft 15. The valve body is shown. Reference numeral 16 indicates an arm whose one end is attached to the upper part of the valve shaft 15, and the arm 16 is attached to a cam pin 18 which is revolved by the rotation of an operating knob 17 attached to the upper part of the joint body 7. The valve shaft 15 is thus pushed and rotated. That is, at the position of the arm 16 shown in FIG.
As shown in the figure, when the arm 16 and the valve shaft 15 are rotated 90 degrees clockwise, the flow path 13 is in an open state. Reference numeral 19 denotes a cam body fixed to the upper part of the slide tube 10, and the cam body 19 is designed to close the flow path 13 when the arm 16 is rotated to the position shown in FIG. The end face 20 of the arm 16 is configured to prevent further counterclockwise rotation of the arm 16.
It has a stopper surface portion 21 that comes into contact with the stopper surface portion 21. Also,
The cam body 19 moves from the state shown in FIG.
When pushed in this direction, the slide tube 10 is moved backward as shown in FIG. Further, when the cam body 19 rotates the cam pin 18 clockwise from the retracted state shown in the figure, the cam pin 18 comes into contact with the locking surface portion 23 of the cam body 19, so that the arm 16 is not moved in any way. It is configured so that it can be advanced to its original position without rotation.

The various devices 3, 3a in the control unit 1 according to this embodiment are connected to a pipe joint 6a similar to the pipe joint 6 having the above structure, that is, a slide pipe 10a is reciprocatably connected to the joint main body 7a. Piping connections are made using joints. Furthermore, for the sake of convenience, the structure of the pipe joints 6 and 6a shown in FIG. 1, such as the attachment of the valve body 12, is omitted.

Since this embodiment has the above-described configuration, first, when installing the control unit 1, each of the pipe joints 6, 6 is connected to the external pipe bodies 5, 5a which have been installed in a fixed state in advance as shown in FIG. The rear side of the joint main body 7 is screwed together and provided in a fixed state. At this time, the slide tube 10 is in a retracted state as shown in FIG.
It is in a water-stop state where the water is cut off by.

Next, the receiving tubes 4, 4a of the control unit 1 are placed on the guide pieces 11 of the pipe joints 6, 6, so that the slide tube 10 faces each receiving tube 4, 4a. Therefore, by moving the cam pin 18 of each pipe joint 6 and advancing the slide tube 10, the slide tube 10 is tightly fitted into each receiving tube 4, 4a as shown in FIG. Can perform piping installation work. Thereafter, by rotating the arm 16 to the state shown in FIG. 3 and rotating the valve shaft 15, the flow path 13 in the slide pipe 10 can be opened, thereby allowing tap water to be supplied.

Furthermore, when repairing each device 3, 3a, etc. in the control unit 1 after the installation work, the slide pipes 10 of the pipe joints 6, 6 are moved back and received by reversing the operation procedure described above. It is only necessary to detach it from the pipes 4, 4a, and by this detachment operation, the control unit 1 can be easily taken out. Note that the slide tube 1 changes from the state in which the slide tube 10 is advanced and the flow path 13 is opened to the initial state shown in FIG.
When retracting the valve 0, the arm 16 and the valve shaft 15 are rotated 90 degrees by the cam pin 18, and the flow path 13 in the slide tube 10 is automatically cut off. This makes it possible to reliably prevent unreasonable water leakage from both the water supply external pipe 5 and the water receiving external pipe 5a during removal.

Furthermore, when replacing individual parts of the various devices 3, 3a, etc. after removing the control unit 1, these various devices can be easily attached and detached by moving the slide pipe 10a of the piping joint 6a back and forth. It becomes.

In the above embodiment, the pipe joint 6 is equipped with a valve body 12 for closing the flow path in the slide pipe 10, but the pipe joint 6 having such a function is , for example, as shown in FIG. 6 also exists.

That is, what is shown in the figure includes a plug provided at the rear of the slide tube 10 fitted into the joint body 7 for opening the rear opening 25 of the slide tube 10 when the slide tube 10 moves forward and closing it when the slide tube 10 moves backward. A body 26 is provided facing the rear opening 25,
Moreover, the plug body 26 is made reciprocally movable so as to be pushed rearward by the slide tube 5 while maintaining the closed state of the rear opening 25 when the slide tube 5 retreats. In the same figure, 27 is a cam pin that is engaged in a groove 29 carved in the outer peripheral wall of the slide tube 10 in order to reciprocate the slide tube 10 by rotational movement, and 28 is a cam pin that is attached to the front of the plug body 26. Each of the springs shown in FIG.

Therefore, in this pipe joint, when the slide tube 10 is advanced and connected to the control unit 1 as shown in the figure, the rear opening 25 of the slide tube 10 is in an open state. From this state, slide tube 10 is opened as shown in Fig. 7A.
When the pipe is moved slightly backward to remove it from the control unit 1, the rear opening 25 first comes into contact with the plug body 26 and is closed, so that water in the pipe joint 6 is immediately stopped. In addition, the plug body 26
Even if the plug body 26 is further pushed rearward by the slide tube 10, the plug body 26 moves back together with the slide tube 10, and maintains the closed state of the rear opening 25. Therefore, even when the slide tube 10 is moved back greatly and completely separated from the control unit 1 as shown in FIG. Therefore, unnecessary fluid leakage from the slide tube 10 to the outside is preferably avoided.

However, the specific configuration of the pipe joint 6 according to the present invention is by no means limited to the above-mentioned embodiment, and it is not an essential requirement to have a water-stopping function when the slide pipe 10 is retracted. In short, it is sufficient that the slide tube 10 is connected to the distal end side of the joint body 7 so as to be reciprocally movable. However, for practical purposes, it is preferable that the pipe joint 6 has a water-stopping function.

Further, in the above embodiment, the piping joint 6 is attached to the external pipe body 5 side, but conversely, the piping joint 6 is attached to the control unit 1 side, so that the slide pipe 10 is attached to the external pipe body 5 side. There is no problem even if it is made to be able to move toward and away from the tube body 5.

Furthermore, in the above embodiment, various devices 3, 3
a... is attached to and detached from the external pipe body 5 while still being accommodated in the box 2. However, in the present invention, as shown in FIG. There is no problem even if the joint main body 7 is provided in a fixed state, and the control unit 1 consisting of the various devices 3, 3a, . Incidentally, as is clear from this embodiment, the present invention can be applied to various devices 3 and 3a.
Not only does it not need to be integrally attached to the box 2, but the box 2 is used for the purpose of protecting the various devices 3, 3a..., and is not necessarily essential to the present invention. do not have. For example, various equipment 3,
3a... are integrally connected with piping, etc., the box 2 may not be provided.

Furthermore, the control unit 1 according to the present invention is not limited to the specific type or number of the water supply devices 3, 3a, etc., and may be any combination of stop valves, constant flow valves, strainers, safety valves, or other devices as required. In addition, when connecting these water supply devices 3, 3a, etc., if a pipe joint equipped with a slide pipe 10 is used as in the above embodiment, the handling becomes easier.
Such a measure is not essential either.

In addition, the design of the specific configuration of each part of the present invention can be changed within the scope of the present invention.

(Effects of the invention) As described above, the present invention has a pipe joint in which a slide pipe is provided so as to be able to move back and forth with respect to the joint body, and the pipe joint is interposed between the water supply control unit and the external pipe body. Since the control unit and the external tube can be attached and detached by the reciprocating movement of the tube, conventionally bolts or the like have been used to tighten the control unit and the outer tube. There is no need to perform complicated bolt tightening work, etc.
A very simple operation of simply moving the slide tube back and forth has resulted in an exceptional effect that can be performed easily and quickly.

Therefore, according to the present invention, the installation and removal work of the control unit is simplified, and even when the control unit is buried deep underground, the maintenance of various devices constituting the control unit is easy. There is a practical benefit of simplifying inspection management.

[Brief explanation of drawings]

FIG. 1 is a schematic plan view of essential parts showing an embodiment of a piping connection structure for a control unit according to the present invention. Figure 2 shows an embodiment of a pipe joint, in which A is a front sectional view, B is a sectional view taken along the line A-A in I, and C is a sectional view taken along the line B-B in A in the figure. . Figures 3 and 4 show its operating state, with Figure 3 being a sectional plan view of the main part when the flow path is open, Figure 4 A being a sectional plan view of the main part when the slide tube is retracted, and Figure 4 RO. is a front sectional view of the slide tube when it is retracted. FIG. 5 is a schematic plan view showing the state before the control unit is installed. Fig. 6 and Fig. 7 show other embodiments of the pipe joint, Fig. 6 A is a front sectional view, Fig. 6 B is a sectional plan view of the main part, and Fig. 7 A and B are front cross sections showing the operating state. figure. FIG. 8 is a schematic sectional view of main parts showing another example of use. 1... Water supply control unit, 3, 3a... Water supply equipment, 5... External piping, 6... Piping joint, 7...
...Joint body, 10...Slide tube.

Claims (1)

[Scope of utility model registration request] Multiple water supply equipment such as water meters and constant flow valves 3, 3
In a pipe connection structure in which a water supply control unit 1 consisting of a... is connected to an external pipe body 5, the tip of the joint body 7 is disposed between the external pipe body 5 and the water supply control unit 1. A pipe joint 6 formed by reciprocatingly connecting a slide pipe 10 is interposed on the side, and either one of the external pipe body 5 and the water supply control unit 1 is connected to the rear of the joint body 7. Piping for a control unit for water supply, characterized in that the other side of both 5 and 1 is connected to the tip of the slide pipe 10 so as to be able to come into contact with and separate from it by reciprocating the slide pipe 10. Connection structure.