JPS6346793Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Technical Field) The present invention relates to a connection structure between a fiber-reinforced partition pipe and a curved pipe suitable for a drainage pipe or ventilation pipe installed inside a building.

(Prior art) Conventionally, a large number of drainage pipes have been installed inside buildings, occupying a considerable amount of indoor space, so in order to simplify this, it is not necessary to provide drainage pipes for each individual device. In some cases, a single drain pipe is commonly used to drain water from multiple devices, such as a bath and a toilet. However, in this case, depending on the water pressure difference, the waste water from one device may flow back into the other device, causing an inconvenience.

In order to solve the above problems, recently, partition pipes made of plastic, aluminum, etc., which divide a single drainage pipe into a plurality of compartments in the cross-sectional direction, have been manufactured. The reason why materials such as plastic and aluminum are used for such partition pipes is that these materials have good extrusion moldability. However, among the above-mentioned pipes, although plastic pipes are inexpensive and have excellent corrosion resistance and workability, they have the disadvantage that they are flammable and can burn in the event of a fire, producing toxic gas. In order to make it fireproof, for example, a fireproof coating could be considered, but the processing was complicated. Although aluminum pipes are durable, they are expensive, have poor workability, and are susceptible to rust and limescale build-up on the inside, as well as dew condensation on the outside. Furthermore, when connecting the above partition pipe to a bent pipe such as an elbow or Y-shaped pipe,
Since the tube is made of extruded material, it is a butt type. For this reason, even if a pipe is externally fitted to the connecting portion, there is a drawback that the bending strength of the connecting portion is insufficient.

(Purpose of the invention) The purpose of the invention is to have fire resistance, corrosion resistance, and dew resistance.
Another object of the present invention is to provide a simple and reliable connection structure between a partition pipe (hereinafter referred to as a mortar pipe) made of a hydraulic cement-based material and a curved pipe, which is inexpensive and has excellent workability.

(Structure of the invention) The above object is a connection structure between a fiber-reinforced mortar pipe and a curved pipe such as a fiber-reinforced mortar elbow or Y-shaped pipe having the same inner diameter as the mortar pipe, which n fitting grooves are formed along the longitudinal direction, and partition walls constituting n compartments are integrally formed within the curved pipe, and the ends of each partition wall are connected to the curved pipe. protrude from the end of the
For connection, the end of the protruding partition wall is inserted into the fitting groove of the adjacent mortar pipe, and the fitting groove has n longitudinal edges to be fitted into the fitting groove, and the mortar pipe A partition plate shorter than the length of the bent pipe by the protruding length of the bent pipe end is inserted, and the opposing ends of the partition wall and the partition plate are brought into contact with each other, so that the adjacent mortar pipe and the bent pipe are mutually connected. This is achieved by a connection structure between a partitioned mortar pipe and a curved pipe, which are formed into n communicating compartments.

(Example) 1 is a mortar tube double-reinforced by wrapping a mortar layer containing glass fibers in a spiral shape around a core mold (not shown) via a vinylon net, and usually has an outer diameter of 60~ It is formed to be 180mm long, 2000mm long, and 7.5 to 9mm thick. In the case of FIG. 1, two diametrically opposed fitting grooves 2 having a rectangular cross section are formed in the inner wall of the mortar tube 1 by the above-mentioned core mold along the tube's longitudinal direction. Also, the mortar tube may be extruded, but in that case vinylon net is not used.

Reference numeral 3 denotes a long partition plate made of a corrosion-resistant metal or a plastic material such as PVC, and both longitudinal edges 4 of the partition plate 3 are inserted into the fitting grooves 2 and locked into the mortar tube 1. The locking position is set inward by a length corresponding to the protruding length of the bent pipe end, which will be described later.

The mortar tube 1 shown in FIG. 4 has four fitting grooves 2 formed at 90° intervals on its inner wall, into which partition plates 3 having a cross-shaped cross section are fitted.

In Fig. 3, there are two compartments in the mortar pipe 1.
Also, in FIG. 4, four compartments are constructed. It is also possible to make the cross section of the partition plate 3 Y-shaped to form three compartments within the mortar pipe.

The mortar pipe 1 is water resistant by itself, but when complete water resistance or open storage is required, the inner and outer surfaces of the pipe are coated with ethylene vinyl acetate copolymer, epoxy resin, etc.
A water-resistant coating is applied by treating with an emulsion or solution of polyester resin.

Next, the connection structure between the mortar pipe and the bent pipe will be described with respect to the mortar pipe shown in FIG.

The bent pipe 5 shown in FIG. 5 (the figure shows an elbow) has the same inner diameter as the mortar pipe 1. As shown in the figure, the curved pipe 5 has a partition wall 6 having both ends 6A projecting from both ends 5A of the curved pipe, and divides the inside of the curved pipe 5 into two parts.
It is divided into individual compartments. The partition wall 6 is made of plastic or metal material and is formed integrally with the curved pipe 5 made of fiber-reinforced mortar material.
The integral formation can be easily achieved by cutting a curved pipe into a gutter shape with a semicircular cross section, making it by injection molding, etc., and joining the two pieces together by sandwiching the partition wall.

When connecting the mortar pipe 1 and the curved pipe 5, insert the protruding end 6A of the partition wall 6 into the fitting groove 2 of the mortar pipe 1.
Insert the partition plate 3 into the fitting groove 2 and bring the opposite ends of the partition plate and the partition wall into contact with each other,
Two compartments are formed in the mortar pipe 1 and the bent pipe 5, which communicate with each other. After connection, apply sealant to the outer circumferential surface of the connection part.

In the above embodiment, a two-section system was described, but a three-section system or a four-section system can be implemented in the same manner. It is also possible to connect a mortar pipe and a Y-shaped pipe in the same way.

(Effects of the invention) As explained above, according to the invention, not only is the partition wall excellent in fire resistance, corrosion resistance, and dew resistance, but also the partition wall is formed integrally with the curved pipe when connecting with the mortar pipe. The connection is made by inserting the end of the mortar pipe into the fitting groove of the mortar pipe, so there is no need for any other connecting tool, and the advantage is that the construction is easy, the connection is reliable, and the strength of the connection is high. There is.

[Brief explanation of the drawing]

Figures 1 to 3 are perspective views of the partition pipe used in the present invention, Figures 1 and 2 are exploded views, Figure 3 is an assembled view, and Figure 4 is an exploded view of the partition pipe used in the present invention. FIG. 5 is a perspective view of a partition pipe, and FIG. 5 is a schematic explanatory diagram showing an embodiment of the present invention. 1... Mortar pipe, 2... Fitting groove, 3... Partition plate, 4... Long edge of partition plate, 5... Bent pipe, 5A
... end of bent pipe, 6 ... partition wall, 6A ... end of partition wall.

Claims (1)

[Scope of utility model registration request] A connection structure between a fiber-reinforced mortar pipe 1 and a curved pipe 5 such as an elbow or Y-shaped pipe made of fiber-reinforced mortar having the same inner diameter as the mortar pipe, wherein n pieces are arranged along the longitudinal direction on the inner wall of the mortar pipe. A fitting groove 2 is formed, and partition walls 6 constituting n compartments are integrally formed in the curved pipe, and the end 6A of each partition wall is connected from the end 5A of the curved pipe. The end portion 6A of the partition wall that protrudes and connects
is inserted into the fitting groove 2 of an adjacent mortar pipe, and the fitting groove 2 has n longitudinal edges 4 to be fitted into the fitting groove, and the length of the curved pipe end protrusion is longer than that of the mortar pipe. A short partition plate 3 corresponding to the length is inserted, and the opposite ends of the partition wall and the partition plate are brought into contact with each other, thereby forming n compartments that communicate with the adjacent mortar pipe and the bent pipe. A connection structure between a partitioned mortar pipe and a bent pipe.