JPH0343511Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention is a pipe joint structure suitable for removably connecting flowmeters, pressure gauges, and various other fluid devices in fluid piping such as water piping. Regarding.

(Prior Art) Conventionally, as a means for connecting fluid equipment such as a flow meter to water pipes, for example, U.S. Patent No.
There is one described in the specification of No. 4516794.

That is, as shown in FIG. 5, in this conventional device, a cylinder chamber 20 is provided at one end side of a mounting holder 1e, which is provided with connection openings 3, 3a for connecting to both ends of the connected pipe bodies 4a, 4b. By setting up
Inside the cylinder chamber 20, a cylindrical slide tube 2 is provided.
1 is inserted into the housing so that it can be reciprocated by a cam mechanism 24.

In this means, the connecting piping parts 9, 9a at both ends of the fluid device 8 are supported by a pair of receiving parts 22, 22a formed at one end of the mounting holder 1e and at the front end of the slide tube 21, respectively. , the slide tube 21 is advanced by the cam mechanism 24 and the fluid device 8 is moved forward.
It is possible to connect and install piping.

(Problems to be Solved by the Invention) In the conventional device, since the piping section 9 of the fluid device 8 and the slide pipe 21 are connected in a state of mere surface pressure contact, the connection between the two is difficult. In order to properly maintain the connection in a watertight state, slide tube 21
It is necessary to constantly apply a relatively large forward force to the Therefore, in the past, the cam mechanism 24 as described above has been employed as a means for pushing the slide tube 21.

However, in the conventional means using the cam mechanism 24, not only the structure of the cam mechanism 24 itself is complicated, but also the configuration of other parts such as the holder 1e, which requires processing and manufacturing work. However, this method is very complicated and has a large problem of high production cost.

Therefore, an object of the present invention is to make it possible to maintain the proper connection state of fluid equipment by simple means without the need to use special operating functions such as conventional cam mechanisms. It is something.

(Means for Solving the Problems) The present invention is designed to maintain the connection between the two by using the fluid pressure in the piping when connecting the fluid equipment to the mounting holder using the fluid pressure in the piping. It was designed to solve the problems of

That is, in the present invention, the cylindrical cylinder 13 is slidably connected to at least one end of the connection piping portions 9, 9a provided at both ends of the fluid device 8, and the connected members are connected. A mounting holder 1 having connection openings 3 and 3a.
, mounting holes 6, 6a are provided for slidingly fitting the distal end of the cylinder 13 or the distal end side of the connecting piping section of the fluidic device 8 so that the fluidic device 8 can be mounted on the mounting holder 1. The inner surface of the cylinder 13 is provided in communication with the connecting openings 3 and 3a, respectively, and facing each other.
This pipe joint structure for fluid equipment is provided with a pressure receiving surface 14 that applies fluid pressure so that when fluid pressure flows into the cylinder 13, the cylinder 13 is pushed and moved forward. .

(Function) Therefore, in the pipe joint structure characterized by the above configuration, the tip sides of both ends of the connection pipe parts 9, 9a of the fluid device 8 are connected to the respective mounting holes 6, 6a of the mounting holder 1. Connect the connecting piping parts 9, 9a at both ends of the fluid device 8 to the mounting holder 1 by moving the cylinder 13 on the fluid device 8 side forward and fitting it into the mounting holes 6, 6a while facing the fluid device 8. It becomes possible.

Then, the cylinder 13 is fitted into the mounting holes 6, 6a of the mounting holder 1, and the fluid device 8 is mounted.
When fluid flows through the inside of the cylinder 13 in a state where the connection is made, the fluid pressure presses the pressure receiving surface 14 formed inside the cylinder 13 and the cylinder 13
produces a forward force, and this forward force acts as long as the fluid flows. Therefore, since the cylinder 13 fits deeply into the mounting holes 6, 6a of the mounting holder 1 and maintains this state, there is a risk that the cylinder 13 may easily come off from the mounting holes 6, 6a. This ensures that a proper water-tight seal is maintained.

Incidentally, since the cylinder 13 is fitted onto the ends of the connecting piping parts 9, 9a of the fluid equipment 8, the cylinder 13 can be easily moved forward.
There is no difficulty in attaching and detaching it. Also,
In the state where the cylinder 13 is connected to the connection holder 1, the pressure receiving surface 14 of the cylinder 13 is placed in a state where no fluid is present inside the cylinder 13.
If the fluid pressure against the cylinder 13 is eliminated, the cylinder 13 can be moved backward, and the fluid device 8 can be easily removed.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.

In Fig. 1, 1 indicates side walls 2, 2 erected at both ends.
Openings 3, 3 for connecting members to be connected are provided on each outer surface side of a.
In this embodiment, as shown in FIG. 2, the openings 3 and 3a are connected to connected members such as water stop valves 4c and 4d and water pipes 4a and 4b.

Mounting holes 6 and 6a are provided in communication with the connection openings 3 and 3a of the mounting holder 1, and these holes are provided on the inner surfaces of the respective side walls 2 and 2a and face each other. 7, 7a are the mounting holes 6, 6a
It shows a receiving part with an arcuate cross section that protrudes from the lower periphery of the holder.

Reference numeral 8 indicates a fluid device such as a flow meter, and connecting piping portions 9 and 9a protruding from both ends thereof include an intermediate pipe 1 having a tubular body portion 10 with a relatively smooth outer peripheral surface.
1 and 11a are screwed together with a gasket 12 interposed therebetween. The tip end of one intermediate pipe 11a is dimensioned so as to be fit into the mounting hole 6a of the mounting holder 1.

Reference numeral 13 denotes a cylinder that is slidably fitted onto the tube body portion 10 on the distal end side of the other intermediate pipe 11, and the inner diameter d ₂ on the rear end side is set larger than the inner diameter d ₁ on the distal end side. A stepped portion is formed approximately at the center. Reference numeral 14 denotes a pressure receiving surface formed on the stepped inner surface of the cylinder 13, and a small diameter portion 13a.
It is set larger than the effective area of the tip face F of. The small diameter portion 13a on the tip side is dimensioned so as to be slidable into the mounting hole 6 on the other side of the mounting holder 1. A drain valve 15 is attached to the outer periphery of the large diameter portion 13b of the cylinder 13, and is used to drain water from inside the cylinder 13. 16,
16a indicates a sealing gasket.

The present embodiment has the above configuration, and an example of its use will be described next.

That is, in order to attach the fluid device 8 to the attachment holder 1 from the state shown in FIG. It is placed on each receiving part 7, 7a of the holder 1.

Next, attach the tip of the intermediate pipe 11a to the mounting hole 6.
a, and as shown in FIG. 2, move the cylinder 13 forward in the direction of arrow B and slide it into the mounting hole 6. Incidentally, since the cylinder 13 is fitted onto the end of the piping section 9 of the fluid device 8,
Even if the mounting holder 1 is installed in a narrow and deep pit where humans cannot enter, the cylinder 13 can be easily pushed forward from the ground using, for example, a rod-shaped tool. can. Further, the cylinder 13 does not need to be inserted deeply into the mounting hole 6, but only needs to be inserted by a small amount.

Therefore, in the above state, the water stop valves 4c, 4
d is opened to allow tap water to flow from the water pipe 4a side to the 4b side, the water pressure P flowing into the large diameter part 13b inside the cylinder 13 acts on the pressure receiving surface 14 inside the cylinder 13, and this This generates a force that pushes 13 forward in the direction of arrow B. At this time, water pressure in the opposite direction acts on the tip surface F of the cylinder 13, but since the area of the pressure receiving surface 14 is larger than the tip surface F, the forward force of the cylinder 13 acts effectively. Further, the forward force of the cylinder 13 acts as a reaction force that pushes the intermediate pipe 11a on the opposite side of the fluid device 8 in the direction of arrow C, and the overall length from the intermediate pipe 11a to the cylinder 13 is further expanded. It will be done.

Therefore, due to the hydraulic action, the cylinder 13
and the other intermediate pipe 11a reach a deep position relative to each mounting hole 6, 6a, and this state will be maintained as long as water pressure exists in the cylinder 13. Therefore, the fluidic device 8 can be reliably mounted on the mounting holder 1.
Note that the force of the water pressure P acting on the end surface portion 17 of one intermediate pipe 11 is also applied as the force for moving the intermediate pipe 11a in the direction of arrow C.

In addition, when removing the fluid equipment 8 installed as described above for repair or the like, first close the water stop valves 4c and 4d, and then open the drain valve 15 provided in the cylinder 13. All you have to do is drain the water inside. By draining the water, the cylinder 13
Since the water pressure on the pressure receiving surface 14 of the pit is eliminated, the intermediate pipe 11 side can be easily pushed into the cylinder 13 side, or the cylinder 13 can be moved backward to shorten its overall length, and then the fluid equipment 8 can be moved into the pit. It can be taken outside.

In the above embodiment, the cylinder 13 is provided with the drain valve 15 so that the fluid can be drained easily and quickly when the fluid device 8 is removed. The drain valve 15 provided is not an essential requirement. However, there is no problem even if a drain valve 15 is provided on the connected members 4a and 4b connected to the mounting holder 1, or a separate water draining means is provided at a position other than the cylinder 13 to drain the fluid from there. Furthermore, it is also possible to close the water stop valve 4c on the upstream side and send all the internal fluid forward to remove the fluid. However, in practice, it is preferable to provide a fluid discharge means directly on the cylinder 13 as in the above embodiment, but this fluid discharge means may be other than a normal opening/closing valve equipped with an opening/closing valve body and a valve seat. Various types of valves can be applied, such as a plug-shaped valve that opens and closes a drainage hole by rotating a predetermined angle.

Further, in the above embodiment, the cylinder 13 is provided only on one side of the connection piping portions 9, 9a of the fluid equipment 8, but the present invention is not limited to this. For example, as shown in FIG. It may be provided on both 9 and 9a. Even in the case of this embodiment, the two cylinders 13, 13 at both ends are attached to the mounting holder 1.
slide it into each mounting hole 6, 6a,
The fitted state can be suitably maintained by the water pressure acting on each pressure receiving surface 14, 14.

Further, in the above embodiment, intermediate pipes 11, 11 are provided at the respective tips of the connection piping portions 9, 9a of the fluid equipment 8.
A is separately screwed on, but this is because threads for screwing are pre-engraved in the connecting piping parts 9 and 9a of commercially available fluid equipment 8, and the cylinder 13 is slid onto this threaded part. This is because it is difficult to fit it externally. Therefore, the cylinder 13 can be directly connected in a slidable state to the connecting piping part 9 of the fluid device 8, and the connecting piping part 9a can be slid into the mounting hole 6a of the mounting holder 1. In this case, the intermediate pipe 1
1 and 11a are unnecessary.

Furthermore, in the present invention, the specific structure of the mounting holder 1 does not necessarily have to be formed as a single piece as in the above embodiment, but may be divided into left and right parts as shown in FIG. 3, for example. Further, it is not necessary to directly connect the water stop valves 4c, 4d to the connection openings 3, 3a at both ends, and the water stop valves 4c, 4d may be provided at other intermediate positions of the water pipes 4a, 4b, for example. good.

In short, the attachment holder 1 according to the present invention has connection openings 3, 3a formed at both ends thereof for connecting the members to be connected, and also allows the fluid equipment 8 to be attached to the attachment holder 1. Attachment holes 6, 6a for slidingly fitting the tip of the cylinder 13 or the tip of the connection piping of the fluid device 8 are provided facing each other and communicating with the connection openings 3, 3a, respectively. It's good if you can. Connection opening 3,
3a and the specific means for forming the mounting holes 6, 6a, etc. can be freely changed in design. It should be noted that pipe bodies such as water pipes, valves, and all other fluid devices can be applied, regardless of the specific type of the connected member to be connected to the connecting openings 3, 3a of the mounting holder 1. Needless to say.

Further, the specific shape of the cylinder 13 according to the present invention is not limited to the above-mentioned embodiments, and the point is that the cylinder 13 itself is pushed on its inner surface by the fluid pressure flowing into the cylinder 13. It is only necessary to provide a pressure receiving surface 14 that applies fluid pressure to move the vehicle forward. The larger the area of the pressure receiving surface 14, the greater the forward pressing force, but the specific area does not matter. Further, the pressure receiving surface 14 is, for example, a fourth
It may be formed in an inclined shape as shown in the figure.

In addition, the present invention allows the design of all the specific configurations of each part to be freely changed within the scope of the present invention, and the specific type of the fluid device 8 is not limited.

(Effects of the invention) As described above, the present invention is capable of slidably connecting a cylinder formed with a pressure-receiving surface for causing fluid pressure to act as a forward force of the cylinder to the end of a piping section for connecting fluid equipment. At least, the cylinder is configured so that both ends of the connection piping section of the fluid device can be connected to the mounting holder by forwardly fitting the cylinder into the mounting hole provided in the mounting holder. , during the connection work, there is no need to keep the cylinder pressed using a complicated cam mechanism as in the past, and the fluid pressure circulating inside the cylinder is applied to the pressure receiving surface. By pushing the cylinder forward to a deep position within the mounting hole, it became possible to maintain an appropriate connection state of the fluid equipment.

As a result, the overall structure of the pipe joint mechanism can be simplified compared to the conventional means using a cam mechanism.
This has resulted in exceptional effects such as improved manufacturability and reduced manufacturing costs.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing an embodiment of a pipe joint structure according to the present invention. FIG. 2 is a sectional view showing a connected state.
3 and 4 show other embodiments of the present invention,
FIG. 3 is a schematic sectional view of the whole, and FIG. 4 is a sectional view of the cylinder. FIG. 5 is a sectional view showing a conventional example. 1... Mounting holder, 3, 3a... Connection opening, 4a, 4b, 4c, 4d... Connected member,
6, 6a... Mounting hole, 8... Fluid device, 9, 9
a... Connection piping section, 13... Cylinder, 14
...Pressure receiving surface.

Claims (1)

[Claims for Utility Model Registration] 1. A fluid device 8 having connection piping portions 9, 9a at both ends is mounted on a mounting holder 1 having connection openings 3, 3a for connecting members to be connected. In this pipe joint structure, a cylindrical cylinder 13 is slidably connected to at least one end of the connecting pipe parts 9, 9a of the fluid equipment 8, and the mounting holder 1 has a pipe joint structure. , a pair of mounting holes 6, 6 for slidingly fitting the distal end of the cylinder 13 or the distal end side of the connecting piping section of the fluidic device 8 so that the fluidic device 8 can be mounted on the mounting holder 1;
a are provided in communication with the connecting openings 3 and 3a, respectively, and the inner surface of the cylinder 13 is provided so that when fluid pressure flows into the cylinder 13, the cylinder 13 is pushed by the fluid pressure. A pipe joint structure for a fluid device, characterized in that it is provided with a pressure-receiving surface 14 that applies fluid pressure to move the fluid device forward. 2. The piping joint structure for a fluid device according to claim 1, wherein the cylinder 13 is provided with a fluid discharge means for discharging the fluid that has flowed into the inside to the outside. 3. The piping joint structure for fluid equipment according to claim 1, wherein the mounting holder 1 has water stop valves 4c, 4d connected to its connection openings 3, 3a.