JPS585186Y2 - Branch joint - Google Patents

Description

[Detailed description of the invention] The present invention +4-heam duct relates to the structure of a branch joint for connecting a branch pipe to a main pipe made of a ceramic pipe or the like.

When connecting a branch pipe to the main pipe, a short pipe for branch connection is first connected to the main pipe, and then the branch pipe is connected to this short pipe.

In the above, to connect a short pipe for branch connection to the main pipe,
Drill a branch connection hole in the main pipe, and connect the lower end of the short pipe for branch connection.
It fits loosely into the branch connection hole, and a bonding agent is applied between the outer surface of the main pipe around the branch connection hole and the lower end of the short branch connection pipe.

However, 1. In connection with this short branch connection tube, it is difficult to position the short branch connection tube, and the lower end of the short branch connection tube may be eccentric with respect to the center of the branch connection hole.

In this case, the gap between the lower end of the short tube for branch connection and the branch connection hole becomes uneven in the circumferential direction, and the amount of bonding agent becomes uneven in the circumferential direction, resulting in poor connection. Problems such as adhesive falling from parts into the main pipe cannot be avoided.

The branch joint according to the present invention has a structure that can solve the above-mentioned difficulties, and has a branch connection hole drilled in the main pipe, the lower end of the short branch connection pipe loosely fitted into the branch connection hole, and a gap between these. In the joint portion to which the short pipe is bonded with a bonding agent, the short pipe for branch connection is provided with a stopper that locks on the outer surface of the main pipe around the branch connection hole, and the stopper is fixed on the outer surface of the main pipe around the branch connection hole. Moreover, this stopper is characterized in that there is a bonding agent inflow portion that communicates with the gap between the branch connection hole and the lower end of the short branch connection pipe.

Hereinafter, the present invention will be described in detail based on embodiments shown in the drawings.

``Figure 1 shows a vertical cross-sectional view of one embodiment of the present invention, Figure 2 is an enlarged sectional view of the main part thereof, and Figure 3 shows a plan view of the second side of the stopper used in the present invention. , 1 is a short pipe for branch connection, and the lower end of the short pipe for connection 1 has an outer diameter approximately equal to the inner diameter of a branch connection hole 3 bored in a main pipe 2 such as a hume pipe or a ceramic pipe. A flange 4 is formed which protrudes outward, and the outer circumferential surface thereof has flange portions 4 spaced apart from each other in the longitudinal direction as shown in FIGS. 1 and 2. Place (2 steps)
A protrusion 5 is formed on.

As shown in FIG. 2, the lower protrusion 5 extends around the entire circumference, but the upper protrusion 5 is provided only on the right side of the figure.

Note that the protrusions 5 may be provided at a plurality of locations (several stages) at intervals in the longitudinal direction.

6' is a stopper fitted and attached to the short connecting pipe 1 between the protrusions 5 and 5 provided on the short connecting pipe 1;
As shown in FIG. 3, a flat ring-shaped band having long holes 12, 12, . . . is used.

This ring-shaped band has an outer diameter larger than the inner diameter of the connecting hole 3, and as shown in FIG. It is composed of ゜62.

This semicircular arc portion 62°62 has a bent protrusion 63 at its end.
63 is formed.

Therefore, the semicircular arc portions 62 and 62 opened left and right are “closed” and brought into contact with the outer surface of the short connecting pipe 1, and then the bent protruding portions 63,
It is configured such that it can be tightened and fixed to the short connection pipe 1 by means of a bolt nut 1 inserted through the hole 63.

The stopper 76' is engaged with the outer surface of the main pipe around the branch connection hole 3, and the lower end of the short pipe 1 for branch connection is loosely fitted into the branch connection hole 3.

Next, apply a bonding agent such as cement mortar or resin concrete between the short pipe 1 for branch connection and the outer surface of the main pipe.

Since the stop bar 6' is provided with long holes 12, 12..., when the stop bar 6' is locked to the outer surface of the main pipe around the branch connection hole 3, The state of the gap between the long hole 12, 12, . . . and the lower end of the short pipe 1 is
It can be visually observed from

Therefore, the locking and superposition of the stones 4ji, 7, j:' can be adjusted so that the gaps are made uniform in the circumferential direction.

A part of the heaped bonding agent moves into the above-mentioned gap through the bonding agent inflow section 4 and the elongated holes 12. Since the gaps are uniform in the circumferential direction, the welding agent flows uniformly into the gaps.

Therefore, the connecting short pipe can be joined and fixed with uniform strength in the circumferential direction.

, 5 After joining and fixing the connecting short pipe to the main pipe, insert the lower pipe into the annular groove 9 provided on the inner peripheral surface of the upper end of the connecting short pipe 1.
Attach Tsukin 10, 1. Next (, Branch!, 11 yen: By inserting and fixing, the branch pipe 11 and the main pipe 2 can be firmly connected.

Instead of the above stopper 6', a notch 1 shown in FIG.
3. A ring-shaped band 6 having 13... can also be used as a stopper.

Alternatively, a ring-shaped band 14 as shown in FIG. 5 (top view) and FIG. 6 (side view) may be used for the stoppers 2 and L.

As is clear from the plan view of FIG. 5, this band 14 does not completely cover the connection hole 3, so the short connection pipe 1-
The locking state of the stopper 14 can be adjusted so that the gap between the connecting hole 3 and the connecting hole 3 is ← in the circumferential direction.

In the figure, 14a indicates a welded connection.

Note that the protrusions 5 provided at intervals in the longitudinal direction on the outer circumferential surface of the short connection pipe 1 may be protrusions 5 extending around the entire circumference as shown in the first part A. As shown in the figure, the protrusion 5 may be formed at a threshold distance in the circumferential direction.

Furthermore, as shown in FIG. 9, the present invention connects the branch pipe 11 to the main pipe 2.
It can also be used when connecting vertically.

Of course. Furthermore, the above-mentioned stopper 6' also &'! , 6' is an example, and is the circumference of the perforation? Use any suitable skewer-shaped material that satisfies the requirements of being attached to the outer surface of the pipe and allowing the bonding agent to flow into the gap between the branch connection hole and the lower end of the short pipe for branch connection. It can be used.

The present invention has the features described in detail above.1. When constructing the branch connection, is it easy to connect the short pipe for branch connection and determine the ↑9 position in the hole due to the effect of the child trapper? 1. The gap between the lower end of the cicada tube and the connection hole can be reliably made uniform in the circumferential direction.

When applying the adhesive, a portion of the adhesive moves into the gap, and in this gap, the lower end of the short pipe is fixed to the connection hole with a layer of adhesive with a uniform thickness and width. It is possible to prevent bonding defects due to non-uniformity of the amount in the circumferential direction; therefore, 1. Book! According to the plan, the short pipe for branch connection can be connected to the main pipe with good workability and without any variation in the degree of connection.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional view of an embodiment of the present invention, and Fig. 2 is a large-scale sectional view of its main parts. Figure 4 is a plan view of the stopper used in the present invention, Figures 5 and 6 are a plan view of another soot of the stopper used in this invention. The figure shows a plan view and a side view of another example of the store 9 used in the present invention, and Figure 7 shows the shape of the protrusion of the short connecting pipe 9 used in the present invention. 9 are vertical sectional views of other embodiments of the present invention. 1 is a short tube for connecting a branch, 2 is a wood pipe, 3 is a branch connecting hole, and 4 is a collar of the short tube for connecting 1. 5 is a protrusion of the connecting short pipe 1, 6'
and 6 is a stopper, 1 is a bolt nut for tightening the bundt 6, 8 is a bonding agent, 9 is an annular groove for attaching a sealing gasket 10, 10 is a sealing gasket, 11 is a branch pipe, 12 and 13 are stoppers. - Long holes and notches formed at 6' and 6〃, 14 is a stopper.

Claims (1)

[Claims for Utility Model Registration] In the joint portion, a branch connection hole is drilled in the main pipe, the lower end of the short pipe for 4-branch connection is loosely fitted into the branch connection hole, and these are bonded with a bonding agent. Attach a stopper to the short pipe for branch connection on the outer surface of the main pipe around the branch connection hole. The branch joint part is characterized in that there is a bonding agent inflow part that communicates with the gap between the branch connection hole and the lower end of the short pipe for branch connection.