JPH1089560A - Mortar filling device for pipe joint to be joined on inner surface - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve work circumstances and productivity by eliminating a special skill and a manual filling work when filling mortar in a pipe joint to be joined on the inner surface. SOLUTION: This device has an annular elastic body 25 disposed from the inner peripheral surface 16 of a pressing ring 10 to the inner peripheral surface of the mortar-lined layer 17 toward the back from the back end surface 7 of a receiving port 3, a butting plate setter 30 for pressing the elastic body 25 on the inner peripheral surface of the pressing ring 10 and the inner peripheral surface 6 of the receiving port 3 in a sealing state and a mortar pump 44 for supplying mortar 42 in a space surrounded by the outer peripheral surface of the pressed elastic body 25, the inner peripheral surface 6 of the receiving port 3, the back end surface 7 of the receiving port 3 and the back end surface 18 of the receiving port side of the pressing ring 10.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mortar filling apparatus for an internally joined pipe joint.

[0002]

2. Description of the Related Art As one type of pipe joint, there is an inner surface joint pipe joint shown in FIG. That is, in FIG.
1 and 2 are a pair of tubes joined together,
A socket 3 is formed at one end of the tube, and an end of the other tube 2 is formed at
An insertion port 4 to be inserted into the receiving port 3 is formed. A tapered sealing material pressing surface 5
And an inner peripheral surface 6 deeper than the sealing material pressing surface 5 and a deeper end surface 7 deeper than the inner peripheral surface 6.

An annular rubber sealing member 8 is disposed between the sealing member pressing surface 5 and the outer peripheral surface of the insertion opening 4. Has a split ring 9
A pressing ring 10 is disposed on a part of the receiving ring 3 farther than the split ring 9. The pressing wheel 10 has a cross section L
It is formed in the shape of a letter, one end of which is arranged between the receptacle openings, and the other end is arranged at a position on the back side of the receptacle 3 with respect to the tip of the insertion opening 4. A plurality of bolts 11 are screwed into the pressing ring 10 in the pipe axis direction as screw bodies in the circumferential direction. The bolt 11 is unscrewed from the pressing wheel 10 and its head 12 presses the back end face 7 of the socket 3 through the connecting rod 13, and at this time, the counterpart provided through the pressing wheel 10 and the split ring 9 is applied. The sealing material 8 is pressed against the pressure contact surface 5 of the receiving port 3 and the insertion port 4 by force.
The sealing material 8 is caused to exhibit a predetermined sealing function by being compressed with the outer peripheral surface of the sealing material 8.

A projection 14 is formed on the outer periphery of the insertion opening 4. The projection 14 hits the end face 15 of the receiving opening 3, so that the tip of the insertion opening 4 stops at an appropriate position in the receiving opening 3. The push wheel 10 is configured so as not to interfere with the other end.

[0005] The inner peripheral surface 16 on the other end side of the pressing wheel 10 has a tube 1,
2 is formed so as to be flush with the inner peripheral surface of the mortar lining layer 17 formed on the inner periphery. And this pressing wheel
In the space surrounded by the rear end face 18 of the receiving port 10, the inner peripheral surface 6 on the rear side of the receiving port with respect to the pressing wheel 10, and the rear end face 7, in order to reduce the flow resistance in the pipe, A mortar filling portion 19 is formed. The mortar filling portion 19 is formed by burying a bolt 11 screwed out from the pressing wheel 10 and a connecting rod 13 and has an inner peripheral surface 20
Is the inner peripheral surface of the mortar lining layer 17 and the inner peripheral surface of the pressing wheel 10.
It is formed flush with 16.

In forming such a mortar filling portion 19, conventionally, the insertion member 4 is inserted into the reception port 3, the sealing material 8 is compressed as described above, and thereafter, the reception port insertion of the joint portion is performed. Perform a water pressure test to see if water leaks between the mouth,
After the completion of the hydraulic test, an operator enters the pipe and fills the mortar by hand.

[0007]

However, such a filling operation performed by a worker requires special skills especially for stabilizing the finish quality and has a problem that the working environment is not good. . In addition, there is a problem that productivity is not high because the work is performed manually.

Therefore, the present invention solves such problems, and does not require special skills for filling the mortar, does not require any manual work, and thus can improve the working environment. It is another object of the present invention to improve productivity.

[0009]

In order to achieve the above object, the present invention provides an annular elastic body disposed from an inner peripheral surface of a pressing wheel to an inner peripheral surface of a receiving port on the back side of the inner end surface. By pressing the elastic body against the inner peripheral surface of the pressing ring and the inner peripheral surface of the receiving port in a sealed state, the outer peripheral surface of the elastic body, the inner peripheral surface of the receiving port, the inner end surface of the receiving port, and the receiving port of the pressing ring are formed. It is possible to form a space surrounded by the back end face, and to be divided between a plurality of circumferentially divided caul plate setters and the circumferentially divided pieces of the caul plate setter, so that the caul plate is A turn buckle for expanding the setter to press the elastic body, an air venting path communicating with the space through the backing plate setter and the elastic body from the inside of the pipe at the top of the pipe, and an air venting path. At a distance in the circumferential direction of the pipe from Is disposed below the position than can path,
And a mortar supply passage that penetrates through the backing plate setter and the elastic body from the inside of the pipe and communicates with the space, and a mortar pump that supplies the mortar into the space through the mortar supply passage.

With such a configuration, the elastic body is pressed in a sealed state by the backing plate setter, so that the portion between the inner peripheral surface of the pressing ring and the inner peripheral surface of the receiving port is sealed, so that the pressing ring and the inner side of the receiving port are sealed. Since an annular space is formed between the mortar and the side end surface, the mortar is supplied to the space by a mortar pump to fill the space. Therefore, it is not necessary to perform a manual operation as in the related art. In addition, since it is only necessary to install the elastic body and the setting plate setter and supply the mortar through the supply path by operating the mortar pump, the working environment is improved, and the mortar is mechanically driven by the mortar pump. Since the filling is performed, productivity at the time of the filling is improved. In addition, only by operating the turnbuckle, the diameter of the backing plate setter is increased and the elastic body is easily pressed, and the degree of pressing can be finely adjusted by the turnbuckle. An air vent path is provided at the top of the pipe, and the mortar supply path is located at a position lower than the top by leaving a distance in the circumferential direction from the top of the pipe, so that the space can be filled with mortar. The air is reliably discharged from the space, and when the filling is completed, by observing that the mortar has been discharged from the air vent passage, it is confirmed that the mortar has been filled into the space without any gap.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, one embodiment of the present invention will be described in detail with reference to FIGS. 1 and 2 where the same members as those shown in FIG. explain.

In FIGS. 1 and 2, reference numeral 25 denotes an annular elastic body made of a foamed resin. The inner peripheral surface 16 of the pressing wheel 10 and the mortar lining layer on the back side of the back end surface 7 of the receiving port 3 are arranged.
It is configured to be able to contact the inner peripheral surface of the 17. The elastic body 25 has a rectangular cross section that is horizontally long along the tube axis direction, and a protrusion 26 is formed on the outer periphery thereof. The protruding portion 26 has an outer peripheral portion for avoiding interference with a rising surface 27 capable of positioning the elastic body 25 in the tube axis direction by being in contact with the receiving end side end surface 18 of the pressing wheel 10 and the head 12 of the bolt 11. Has a tapered surface 28 formed by being soaked.

On the inner peripheral side of the elastic body 25, an annular backing plate setter 30 is arranged. The caul plate setter 30 is formed of a metal plate formed to be thin in the radial direction, and the caul plate setter 30 is positioned in the tube axis direction by cutting into the inner peripheral portion of the elastic body 25 on the outer surface thereof. Letting ridge 31
Are formed along the circumferential direction and the inner surface has reinforcing ribs
32 are formed along the circumferential direction.

As shown in FIG. 2, the backing plate setter 30 comprises:
It is divided into a plurality along the circumferential direction. That is, in the example shown in the drawing, the structure is divided into four portions along the circumferential direction, so that four divided pieces 30A, 30B, 30C, and 30D are provided. The split piece 30A, the split piece 30B and the split piece 30D are engaged with each other so as to be mechanically disassembled. For this mechanical engagement, for example, an engagement projection 33 as shown can be formed. In addition, between the divided piece 30C, the divided piece 30B and the divided piece 30D,
A turnbuckle 34 is provided for each. And
By operating the turn buckle 34, the annular backing plate setter 30 in a state where the divided piece 30A, the divided piece 30B and the divided piece 30D are engaged with each other can be freely expanded and reduced in diameter. If necessary, a turnbuckle 34 can be provided between the split piece 30A, the split piece 30B, and the split piece 30D.

As described above, each of the divided pieces 30A, 30B, 30C, 30
D can be assembled with each other to form an annular patch setter 30, and by reducing the diameter of the patch setter 30 and disassembling the turnbuckle 34, each split piece 30
A, 30B, 30C and 30D can be individually disassembled. Each of the divided pieces 30A, 30B, 30C, 30D can be provided with a handle 35 for operating and transporting the divided pieces as required.

In the illustrated caul plate setter 30, a split piece 30A
Is assembled so that is located at the top of the tube. At this time,
The split piece 30C is located at the bottom of the tube. The divided piece 30A located at the top of the pipe has an air vent path 37 with a valve 36 at the top, and a mortar supply path 39 with a pair of valves 38 disposed at a position slightly below the air vent path 37 with the valve 36. Are provided. That is, the pair of mortar supply paths 39 with valves 38 are provided at positions circumferentially opposite to each other in the circumferential direction from the air vent path 37 with valves 36 at the top. An air vent path 37 with a valve 36 similar to the split piece 30A at the top of the pipe is provided at the bottom of the split piece 30C at the bottom of the pipe.

A hose 40 is detachably connected to the mortar supply path 39 with each valve 38. As shown in FIG. 1, the hose 40 is connected to a mortar pump 44 having a hopper 43 for storing the mortar 42. It is connected. A hose 45 is detachably connected to the air vent passage 37 with the valve 36 of the divided piece 30A at the top of the pipe, and the hose 45 is led to a collection container using a bucket or the like. The end of the valve 36 is open in the air vent passage 37 of the divided piece 30C at the bottom of the pipe.

The air vent path 37 with each valve 36 and each valve 38
Mortar supply path 39
The elastic body 25 penetrates through the elastic body 25 and communicates with a portion of the elastic body 25 on the outer peripheral side.

In such a configuration, when the insertion port 4 is inserted into the reception port 3 and a water pressure test between the reception port insertion ports after the compression of the sealing material 8 is completed, an elastic body is provided on the inner periphery of the portion. 25, and further apply a contact plate setter 30 on the inner periphery of the elastic body 25.
Place. And each divided piece 30 of the backing plate setter 30
A, 30B, 30C, and 30D are assembled in an annular shape, and the diameter of the abutment plate setter 30 is increased by a turn buckle 34. As shown in FIG.
16 and press the outer peripheral surface on the other end
Mortar lining layer 17 deeper than back end face 7
Is pressed against the inner peripheral surface.

At this time, only by operating the turnbuckle 34 in this way, the diameter of the backing plate setter 30 can be easily expanded and the elastic body 25 can be pressed. Further, by operating the turnbuckle 34, it is possible to finely adjust the pressing force at that time. In addition, at this time, as described above, the rising surface 27 of the elastic body 25 contacts the rear end face 18 of the receiving ring 10 of the pressing wheel 10 so that the elastic body 25 is positioned in the tube axis direction. The backing plate setter 30 is positioned in the tube axis direction by the bite 31 into the inner peripheral portion of the elastic body 25. As a result, a portion extending between the inner peripheral surface 16 of the press wheel 10 and the inner peripheral surface of the mortar lining layer 17 of the socket 3 is sealed by the elastic body 25, and the outer peripheral surface of the pressed elastic body 25 and the socket 3 Inner peripheral surface 6, rear end surface 7 of receiving port 3, and rear end face of receiving port of pressing wheel 10
Space surrounded by 18 and annular along the circumferential direction of the pipe
46 will be formed.

Next, a hose 40 from a mortar pump 44 is connected to a mortar supply path 39 with each valve 38, and a hose 45 is connected to an air vent path 37 with a valve 36 at the top of the tube. Then, after all the valves 36 and 38 are opened, the mortar pump 44 is operated, and the mortar 42 in the hopper 43 is
And, it is pressure-fed into the space 46 via the mortar supply path 39.
Then, the air in the space 46 is discharged to the outside from the upper and lower air vents 37 along with the pressure feeding, and the space 46 is reliably filled with the mortar 42 instead.

The mortar 42 filled in the space 46 flows toward the bottom of the tube by the action of gravity, and when the discharge of the air corresponding to the bottom of the tube in the space 46 is completed, the air vent passage 37 in the bottom of the tube is provided. The mortar 42 flows out of the valve 36. Then, after confirming the flow of the mortar 42, the valve 36 at the bottom of the tube is closed. Then mortar 42,
The space 46 is gradually filled from the tube bottom toward the tube top. At this time, air is discharged from the air vent passage 37 at the top of the pipe.

When the entire space 46 is filled with the mortar 42, the mortar 42 is discharged from the air vent passage 27 at the top of the pipe,
This is observed at the tip of the hose 45. Therefore, the operation of the mortar pump 44 is stopped, and the valve 38 of the supply path 39 and the valve 36 of the air vent path 34 are closed.
As described above, since the air is vented by the air vent passage 27 at the top of the pipe, it is possible to discharge all the air in the space 36 and fill the mortar with the air.
Despite supplying mortar into the space 46 from the pair of mortar supply paths 39 disposed at a position slightly lower than 37, by confirming the discharge of mortar from this air vent path 27, Mortar can be filled in 46 without any gap.

After that, after the mortar 42 is hardened, the backing plate setter 30 is disassembled and the elastic body 25 is removed, and a simple spatula finish is performed if necessary.
The filling operation is completed. As a result, a mortar filling portion can be formed similarly to that shown in FIG. 5, and the inner peripheral surface thereof can be flush with the inner peripheral surface of mortar lining layer 17 and inner peripheral surface 16 of pressing wheel 10. The removed backing plate setter 30 and elastic body 25 are transported to the next mortar filling location.

FIGS. 3 and 4 show another embodiment according to the present invention. Here, instead of the above-mentioned split type patch plate setter 30, an integral structure patch plate setter 50 is used. That is, the contact plate setter 50 has a pair of annular plates 51, 51 spaced apart in the pipe axis direction, and the outer diameter of the annular plates 51, 51 is determined by the inner diameter of the mortar lining layer 17 of the pipe 1 and the pressing ring 10 Is formed slightly smaller than the inner diameter of the inner peripheral surface 16 of the inner surface. The annular plates 51 are connected to each other at a plurality of positions in the circumferential direction by a connecting plate 52 in the tube axis direction. Each connecting plate 52 has a bolt in the pipe radial direction.
53 is screwed in a penetrating state, and the tip of the bolt 53 screwed out of the connecting plate 52 presses the inner peripheral surface of the elastic body 25 via the contact plate 54, thereby pressing the elastic body 25. The inner peripheral surface 16 of 10 and the inner peripheral surface of the mortar lining layer 17 of the receiving port 3 are pressed.

At this time, as described above, the outer circumference of the annular plates 51, 51 is the inner circumference of the mortar lining layer 17 of the pipe 1 or the pressing ring 10
Since the elastic body 25 is provided close to the inner peripheral surface 16, only the outer peripheral portion of the elastic body 25 only protrudes radially outward from the outer periphery of the annular plates 51, 51, and the inner peripheral portion is annular. The elastic body 25 is in a state where it can be engaged with the plates 51, 51.
And the backing plate setter 50 are positioned relative to each other in the tube axis direction.

With such a configuration, the mortar can be similarly filled. In addition, backing plate setter 50
Is an integral structure that is not a split type, so that when the caul plate setter 50 is small and lightweight, that is, when it is applied to a pipe having a relatively small diameter, the construction for transportation and installation can be easily performed.

[0028]

As described above, according to the present invention, an annular elastic body disposed from the inner peripheral surface of the pressing ring to the inner peripheral surface of the receiving port on the back side of the inner end surface, and this elastic body is provided on the pressing ring. By pressing the inner peripheral surface and the inner peripheral surface of the receiving port in a sealed state,
It is possible to form a space surrounded by the outer peripheral surface of the elastic body, the inner peripheral surface of the receiving port, the rear end face of the receiving port, and the rear end face of the receiving port of the pressing ring, and a plurality of circumferentially divided patch plate setters. When,
A turnbuckle that is passed between the divided pieces in the circumferential direction of the patch plate setter to expand the diameter of the patch plate setter and presses the elastic body, and the patch from the inside of the pipe at the top of the pipe. An air bleeding passage that penetrates the plate setter and the elastic body and communicates with the space, is disposed at a position below the air bleeding passage at a distance from the air bleeding passage in the circumferential direction of the pipe, and from the inside of the pipe. A mortar supply path that penetrates through the caul plate setter and the elastic body and communicates with the space, and a mortar pump that supplies mortar into the space through the mortar supply path, as in the related art. Eliminates the need for manual work, and only requires the installation of the elastic body and the caul plate setter, and the supply of mortar via the supply path by operating the mortar pump. Because, the working environment can be improved, and since that can fill the mortar by mechanical force using a mortar pump, it is possible to improve productivity at the time of filling. Also, just by operating the turn buckle, the elastic body can be easily pressed by expanding the backing plate setter,
Further, the degree of pressing can be finely adjusted easily by the turnbuckle. An air vent path is provided at the top of the pipe, and the mortar supply path is located at a position lower than the top by leaving a distance in the circumferential direction from the top of the pipe, so that the space can be filled with mortar. Air can be reliably discharged from the space, and when filling is completed, by observing that the mortar has been discharged from the air vent path, it is easy to ensure that the mortar has been filled without gaps in this space. You can check.

[Brief description of the drawings]

FIG. 1 is a schematic sectional view showing a mortar filling apparatus for an internally joined pipe joint according to one embodiment of the present invention.

FIG. 2 is an overall cross-sectional view of a portion shown in FIG.

FIG. 3 is a schematic sectional view showing a mortar filling apparatus for an internally joined pipe joint according to another embodiment of the present invention.

FIG. 4 is an overall cross-sectional view of a portion shown in FIG. 3;

FIG. 5 is a cross-sectional view illustrating an inner surface joint fitting filled with mortar by a conventional method.

[Explanation of symbols]

 3 Receiving port 4 Inserting port 7 Back end face 8 Sealing material 10 Press ring 11 Bolt 18 Receiving port back end face 25 Elastic body 30 Patch plate setter 44 Mortar pump 46 Space 50 Patch plate setter

Claims (1)

[Claims] 1. A back end face of a socket formed at an end of one pipe, and an insertion formed at an end of another pipe joined to the one pipe and inserted into the socket. A push ring is arranged between the tip of the mouth and the tip of a screw body screwed out of the push ring presses the back end face of the socket, so that the push ring compresses the sealing material between the socket openings. A mortar filling device for an internally joined pipe joint, comprising: an annular elastic body disposed from an inner peripheral surface of a press ring to an inner peripheral surface of a receiving port on a deeper side than the inner end surface; and By pressing the inner peripheral surface of the press ring and the inner peripheral surface of the receiving port in a sealed state,
It is possible to form a space surrounded by the outer peripheral surface of the elastic body, the inner peripheral surface of the receiving port, the rear end face of the receiving port, and the rear end face of the receiving port of the pressing ring, and a plurality of circumferentially divided patch plate setters. When,
A turnbuckle that is passed between the divided pieces in the circumferential direction of the patch plate setter to expand the diameter of the patch plate setter and presses the elastic body, and the patch from the inside of the pipe at the top of the pipe. An air bleeding passage that penetrates the plate setter and the elastic body and communicates with the space, is disposed at a position below the air bleeding passage at a distance from the air bleeding passage in the circumferential direction of the pipe, and from the inside of the pipe. An inner joint pipe having a mortar supply passage penetrating the backing plate setter and the elastic body and communicating with the space, and a mortar pump supplying the mortar into the space through the mortar supply passage. Mortar filling equipment for fittings.