JP2003074748A - Vertical pipe connection part structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide vertical pipe connection part structure of excellent cut-off performance without the mutual pipe axes being installed breaking in zigzag at a connection part between an upper vertical pipe and a lower vertical pipe. SOLUTION: In this vertical pipe connection part structure, a cut-off ring 132 is mounted to at least one face out of the upper face and lower face of a collar 11 of a cylindrical joint 10 formed as pipe sockets at both end parts and protrusively provided with the ring-like collar on the inside of the center part. One pipe socket 121 of the joint 10 is mounted in the upper end part of the lower vertical pipe 21, and pipe end face of the upper end part of the lower vertical pipe abuts on the collar part 11 of the joint 10 or the cut-off ring 132 mounted to the collar part. The lower end part of the upper vertical pipe 22 is inserted in the other pipe socket 122 of the joint 10, and the pipe end face of the lower end part of the upper vertical pipe 22 abuts on the cut-off ring 132 mounted to the collar part 11 of the joint 10, or the collar part 11. The cut-off ring 132 mounted to the collar part 11 is compressed by the collar part 11 and the end face of the lower end part of the upper vertical pipe 22 by pressing the upper vertical pipe 22 downward.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vertical pipe connecting portion structure in which a lower end of an upper vertical pipe is connected to an upper end of a lower vertical pipe arranged below to form a pipe line, and in particular, The present invention relates to a vertical pipe connection structure which is preferably applied when a vertical resin concrete vertical sewer pipe is laid in a human hole.

[0002]

2. Description of the Related Art Conventionally, large diameter resin concrete (F
When a (RPM) vertical sewer pipe is installed in a human hole, both ends of the vertical pipe arranged below and the vertical sewer pipe stacked on top of the vertical pipe are used as pipe receiving ports. The inside is connected via a cylindrical joint in which a ring-shaped flange capable of simultaneously contacting both the end surface of the upper end portion and the end surface of the lower end portion is provided.

Generally, a large diameter FRPM pipe has a large weight, and when stacking the FRPM pipes to form a vertical pipe line, the upper pipe is hung with a wire or the like, and the guide rail is provided on the inner wall of the human hole. It is lowered along with and inserted into the pipe socket of the joint waiting underneath.

In this case, in order to stop the water, a water stop ring is provided on the outer peripheral surface of each of the lower vertical pipe and the upper vertical pipe, and / or the inner peripheral surface of the pipe receiving port of the joint. At the connection point between the upper vertical pipe and the lower vertical pipe, the pipe axes of the pipes are bent in a zigzag manner due to the pipe swinging or the vertical pipe mounting metal fittings previously attached to the inner wall of the human hole. There was a problem that the water resistance was deteriorated at that location.

That is, since the water stoppage is performed by the water stop ring provided between the side wall surfaces of the pipe and the joint, by any chance, the outlet of the pipe is located in the pipe receiving port of the joint. Even if it descends at an angle, the pipe will be fixed as if it was twisted.

[0006]

DISCLOSURE OF THE INVENTION The present invention, in particular, when installing a large-diameter FRPM vertical sewer pipe in a human hole, at the connecting point of the upper vertical pipe and the lower vertical pipe, mutually The present invention has been made for the purpose of providing a vertical pipe connecting portion structure which is excellent in water-stopping property without being bent and installed in a zigzag manner.

[0007]

The vertical pipe connecting structure of the present invention for solving the above problems connects the lower end of the upper vertical pipe to the upper end of the lower vertical pipe arranged below. A vertical pipe connecting portion structure which forms a pipe line by connecting a lower end portion of an upper vertical pipe to an upper end portion of a lower vertical pipe arranged below. Of the flange of a cylindrical joint, a ring-shaped flange that is capable of contacting both end surfaces of the upper end portion and the end surface of the lower end portion is formed inside the central portion with both end portions serving as pipe receiving ports. A water stop ring is attached to at least one surface of the upper surface or the lower surface, and one pipe receiving port of the joint is inserted into the upper end portion of the lower vertical pipe,
The pipe end face of the upper end of the lower vertical pipe comes into contact with the collar portion of the joint or the water stop ring attached to the collar portion, and the lower end of the upper vertical pipe is inserted into the other pipe receiving port of the joint to form the upper vertical pipe. The pipe end face of the lower end of the pipe comes into contact with the water stop ring or the flange part attached to the flange part of the joint, and pushes the upper vertical pipe downward, so that the flange part is vertically perpendicular to the end face of the lower end part of the upper vertical pipe. A water stop ring that is compressed with the end face of the upper end of the pipe or is attached to the collar part is formed by the end face of the lower end of the upper vertical pipe and the collar, or by the end face of the upper end of the lower vertical pipe and the collar. It is a vertical tube connection structure characterized by being compressed.

The cylindrical joint is a joint in which a groove is provided along the circumferential direction in the central portion of at least one of the upper surface and the lower surface of the flange, and the upper end pipe end surface of the lower vertical pipe or the upper vertical pipe. At least one pipe end face of the lower end pipe of the pipe is equipped with a water stop ring that fits in the groove, the lower pipe receiving end of the joint is inserted into the upper end of the lower vertical pipe, and the upper vertical pipe is The water stop ring may be fitted in the groove by being inserted into the upper pipe receiving port of the joint and pushing the upper vertical pipe downward.

The joint body may have any strength as a joint for connecting pipes having a large diameter and a large weight and excellent corrosion resistance. For example, thermoplastic synthetic resin, fiber reinforced heat Curable synthetic resin (FRP), resin concrete (FRPM), etc. are mentioned.

In any of the inventions, the inlet diameter of the pipe receiving port of the joint is substantially the same as the outer diameter of the vertical pipe and is slightly increased. However, it is desirable that the inner portion is as close as possible to the outer diameter of the pipe. With this configuration, when inserting the pipe end into the joint receiving opening, even if there is some runout in the vertical pipe, it is easy to insert, and when the vertical pipe is inserted all the way into the joint, the pipe axis becomes This is because it coincides with the pipe axis of the joint and there is almost no risk of zigzag. Further, in order to facilitate the insertion of the vertical pipe, the pipe receiving port of the joint may have a tapered shape in which a part of the pipe receiving port is slightly expanded toward the end.

The tsuba is not particularly limited as long as it is strong enough not to buckle and has excellent corrosion resistance even if it is deformed due to the weight of the vertical pipes stacked above it. Resin, fiber reinforced thermosetting synthetic resin (FRP), resin concrete (FRPM) and other synthetic resins; stainless steel, aluminum and other metals;
Examples thereof include elastic materials such as natural rubber, synthetic rubber, and water absorbent rubber.

The water stop ring is deformed by the weight of the vertical pipes stacked on top of it. Any material may be applied as long as it can withstand the weight and keep the water stop, and the water stop ring is not particularly limited. As an example, elastic resins such as polyethylene, polypropylene and nylon; flexible synthetic resins such as fiber reinforced thermoplastic elastic resin and fiber reinforced thermosetting elastic resin; natural rubber, synthetic rubber, elastic bodies such as water absorbent rubber ;copper,
Metals such as brass, aluminum, and stainless steel, and those obtained by elastically processing these; composite materials in which the above materials are used in combination are included. Moreover, the cross-sectional shape is not limited, and may be a normal water-blocking ring having a circular shape, an elliptical shape, or any other shape.

When the water stop ring is used, the collar may be made of the same material as the joint body or a hard material such as metal. When the water stop ring is not used, metals such as stainless steel and aluminum are used. An elastic material such as natural rubber, synthetic rubber, or water-absorbing rubber may be used.

The width of the brim may be appropriately selected and determined depending on the material of the tube, the weight of the vertical tube, the integrated weight, etc., but it is usually made approximately the same as or slightly smaller than the tube thickness of the vertical tube. That is,
This is because, as described above, when the flange is deformed due to the weight of the vertical tubes stacked above, it is desirable that a part of the deformed flange does not protrude in the inner circumferential direction of the vertical tube.

It is desirable that the diameter of the water blocking ring is set so that it does not protrude in the inner circumferential direction of the vertical tubes when deformed by the weight of the vertical tubes stacked above.

The water stop ring is provided on both sides or at least one side of the collar.

A groove may be provided along the circumferential direction at the center of at least one of the upper surface and the lower surface of the collar. At least one pipe end surface of the upper end pipe end surface of the lower vertical pipe or the lower end pipe end surface of the upper vertical pipe is equipped with a water stop ring that fits into the groove, and the lower pipe receiving port of the joint is provided at the upper end portion of the lower vertical pipe. , The upper vertical pipe is inserted into the upper pipe receiving port of the joint, and the upper vertical pipe is pushed downward,
A water stop ring is adapted to fit in the groove.

The brim in this case may be a hard material or an elastic material, but the water blocking ring is made of an elastic material such as natural rubber, synthetic rubber or water absorbent rubber. Desirably, it may be mounted on only one side of the flange or on both sides.

(Operation) In the present invention, the upper vertical pipe and the lower vertical pipe are connected through the joint, and the water stop between the joint and the upper or lower vertical pipe is provided on the inner peripheral surface of the joint. Since the collar or the water stop ring attached to the collar surface is compressed by the tube end surface of each vertical tube, reliable water stop can be achieved. Moreover, since there is no water stop ring on the side of the pipe at the connection part, there is little risk that the pipe and fitting will be fixed in a prying condition, and the inner diameter of the joint pipe receiving port is almost the same as the outer diameter of the vertical pipe. With this, when the pipe end portion of the vertical pipe is inserted into the pipe receiving port of the joint, the pipe axes thereof substantially coincide with each other. Therefore,
The tube axes of the upper and lower vertical tubes do not become zigzag.

[0020]

DETAILED DESCRIPTION OF THE INVENTION The present invention will now be described with reference to the drawings. 1 to 6 are half sectional views showing an example of the embodiment of the present invention.

In FIG. 1, a FRPM cylindrical joint 1
A flange 11 is projectingly provided on the inner peripheral surface of the center of No. 0, both joint ends are pipe receiving ports 121 and 122, and a lower pipe receiving port (12
The upper end of the lower vertical pipe 21 is inserted in 1), and the lower end of the upper vertical pipe 22 is inserted in the upper pipe receiving port (122).

The upper and lower surfaces of the collar 11 can be brought into contact with any of the upper or lower vertical pipes 21 and 22 without a gap, and a water stop ring (the upper water stop ring in FIG. 1) can be attached to one of the faces. 132) is installed. The mounting of the water stop ring is not limited to this example, and may be mounted only on the other surface as shown in FIG. 2 or on both sides as shown in FIG.
It may not be attached as shown in FIG.

The collar 11 is formed at the same time when the joint 10 is manufactured and is integral with the joint 10, but different materials may be used. For example, as shown in FIG. 4, when the water stop ring is not used as shown in FIG. 4, the collar 11 itself may be made of an elastic material such as rubber and fixed at a predetermined position in the joint 10. At this time, convex ridges 111, 1 are formed on the upper and lower surfaces of the collar 11 along the circumferential direction at the center thereof.
12 may be provided and this may be used as a substitute for the water stop ring.

The water blocking rings 131 and 132 are generally made of a general one having a circular cross section, but may have an elliptical, rectangular, trapezoidal or other cross section. Regardless of the shape, the water stop rings 131, 13
It is necessary that 2 and the collar 11 or the pipe end faces of the upper or lower vertical pipes 21 and 22 are in uniform contact with each other over the entire length of the water blocking rings 131 and 132. As described above, the upper and lower side surfaces of the collar 11 are configured to uniformly abut the tube end surfaces of the upper and lower vertical tubes 21 and 22, respectively.
This is because the pipe axis of the joint 101 and the pipe axes of the vertical pipes 21 and 22 will be displaced unless the water blocking rings 131 and 132 are in uniform contact with each other.

The collar 11 and the water stop rings 131 and 132 are
When the upper vertical pipe 22 is pushed downward, the upper vertical pipe 22 is deformed by receiving a compressive force, and the water stop performance is exhibited. When compressed, both the collar 11 and the water stop rings 131 and 132 are deformed so as to project inward in the pipe, but it is not desirable to project into the pipe so that the inner peripheral surface of the pipe is not smooth. Therefore, no protrusion or the amount of protrusion must be minimized.

Therefore, the collar 11 and the water stop rings 131, 1
The inner diameter of 32 takes into consideration the respective materials, the total weight of the vertical pipes stacked above, the amount of sewage flowing down the vertical pipes, the surface pressure of the pipe end face of the vertical pipes, the cross-sectional shape of the water stop ring, etc. These deformation amounts may be individually estimated and appropriately selected and determined according to the site.

FIG. 5 shows a recessed groove 113 into which water stop rings 131 and 132 can be fitted in the central portion of the collar 11 along the circumferential direction.
It is a sectional view of an example in which 114 is provided. In this case, when the upper vertical pipe 22 is pushed downward, the water stop rings 131 and 132 are pushed into the concave grooves 113 and 114, so that the water stop is completely completed, and the water stop rings 131 and 132 are completed.
Even if it is deformed, its position does not shift, so the tube axis does not shift. However, it goes without saying that the concave grooves 113 and 114 must have a shape and a size that can completely store the deformed water blocking rings 131 and 132.

Further, in this case, the material of the collar 11 may be a hard material or an elastic material, but in the case of an elastic material, even if the collar 11 itself deforms, the deformed portion As described above, it must be designed so as not to project into the conduit.

The recessed grooves 113 and 114 into which the water stop rings 131 and 132 can be fitted may be provided on both upper and lower surfaces of the collar 11, or may be provided on only one side of the collar 11, or only on one side. If so, a water stop ring may or may not be used on the opposite side. It goes without saying that when the water stop ring is not used, the collar portion 11 must be made of an elastic material. In addition, in the case where the groove is provided as described above, other than the example illustrated in FIG. 5, the structure of the water stop and the connection can be easily inferred from FIG. 5, and is not illustrated.

As shown in the case of the upper pipe receiving port 122 in FIG. 6, the pipe receiving ports 121 and 122 of the joint 10 have a tapered surface 1221 in which a part of the vicinity of the inlet is slightly expanded toward the end. It may be done. In this case, since the pipe end portion of the upper vertical pipe 22 is easily inserted along the inlet tapered surface 1221 of the pipe receiving port 122 of the joint, and there is no taper after the insertion, the pipe axis of the vertical pipe 22 and the pipe of the joint 10 are not formed. The axis does not shift.

[0031]

As described above, the vertical pipe connecting portion structure of the present invention has an upper vertical pipe and a lower vertical pipe, especially when a large-diameter FRPM vertical sewer pipe is installed in a human hole. Therefore, the pipe axis of each pipe is not bent and installed in a zigzag manner at the connection point with the pipe connection part in the vertical direction, which is excellent in waterproofness.

[Brief description of drawings]

FIG. 1 is a half sectional view showing an example in which a water stop ring is mounted only between an upper vertical pipe and a collar.

FIG. 2 is a half sectional view showing an example in which a water stop ring is mounted only between a lower vertical pipe and a collar.

FIG. 3 is a half cross-sectional view showing an example in which water stop rings are mounted both between an upper vertical pipe and a collar and between a lower vertical pipe and a collar.

FIG. 4 is a half sectional view showing an example in which a water stop ring is not attached.

FIG. 5 is a half cross-sectional view of an example in which a recessed groove into which a water stop ring can be fitted is provided along the circumferential direction in a central portion of a collar.

FIG. 6 is a cross-sectional view showing a part of an example of the structure of a joint pipe receiving port.

[Explanation of symbols]

10 Cylindrical joint 11 Tsuba 111 Collar lower convex ridge 112 Tsuba upper convex ridge 113 Lower collar groove 114 Collar upper groove 121 Lower pipe port 122 Upper pipe port 1221 tapered surface 131 Lower water stop ring 132 Upper water stop ring 21 Downward vertical tube 22 Upper vertical tube

Claims (2)

[Claims] 1. An upper end portion of a lower vertical pipe arranged below,
It is a vertical pipe connecting portion structure that connects the lower end of the upper vertical pipe to a pipe line, and both ends are pipe receiving ports, and either end face of the upper end or the end face of the lower end is inside the central part. Also has a ring-shaped flange that can abut on at least one surface of the upper surface or the lower surface of the flange of the cylindrical joint, and a water stop ring is attached to the upper end of the lower vertical pipe. The receiving end is inserted, the pipe end surface of the upper end of the lower vertical pipe comes into contact with the flange of the joint or the water stop ring attached to the flange, and the lower end of the upper vertical pipe is connected to the other pipe receiving end of the joint. When inserted, the pipe end surface of the lower end portion of the upper vertical pipe comes into contact with the water stop ring or the collar portion mounted on the collar portion of the joint, and the upper vertical pipe is pushed downward, so that the collar portion becomes the upper vertical pipe. A water blocking phosphorus that is compressed by the end face of the lower end and the end face of the upper end of the lower vertical pipe, or is attached to the collar part. But at the end surface and the flange of the lower end of the upper vertical pipe, or vertical direction of the pipe connection portion structure, characterized in that it is compressed between the end surface and the flange of the upper end of the lower vertical pipe. 2. The cylindrical joint is a joint in which a groove is provided along the circumferential direction at the center of at least one of the upper surface and the lower surface of the flange, and the upper end pipe end surface of the lower vertical pipe or At least one of the lower end pipe end faces of the upper vertical pipe is fitted with a water stop ring that fits in the groove, and the lower vertical pipe upper end is fitted with the lower pipe receiving port of the joint. 2. The vertical pipe connection according to claim 1, wherein a lower end portion of the pipe is inserted into an upper pipe receiving port of the joint, and a water blocking ring is fitted into the concave groove by pushing an upper vertical pipe downward. Part structure.