JP3789273B2 - Sewage tank pipe connection structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a pipe connection structure for a sewage basin, and more particularly to a structure for connecting a drain pipe to an outlet of the sewage basin.
[0002]
[Prior art and problems to be solved by the invention]
Various methods are used to connect the outlet of the sewage basin provided at the junction of the sewage pipe and the drain pipe, but the short pipe protruding from the sewage basin outlet and the end of the drain pipe A structure for fitting a male and female via a packing with a receiving port formed in a wide area is widely used.
[0003]
However, when the short pipe and the drain pipe are simply fitted via the packing, the connection angle between the short pipe and the drain pipe can be changed in any direction with the packing portion as a fulcrum, so the drain pipe is reversed. Sometimes it became a gradient.
[0004]
Therefore, the present invention is capable of reliably connecting the drain pipe at a predetermined connection angle, and is capable of adjusting the connection angle in the horizontal direction while preventing the drain pipe from being connected at a reverse gradient, so that the drain connection pipe can be connected. The purpose is to provide.
[0005]
[Means for Solving the Problems]
In order to achieve the above-described object, the pipe connection structure of the sewage tank according to the present invention is a pipe connection structure for connecting a drain pipe to a sewage tank outlet, and a drain pipe is disposed on the outer periphery of the tip of a short pipe protruding from the outlet. In addition to providing a packing mounting part for mounting packing that seals between the pipes, the outer diameter in the vertical direction corresponds to the inner diameter of the distal end of the drain pipe on the outer periphery of the short pipe on the base side from the packing mounting part. A rib having a smaller outer diameter in the direction than the inner diameter of the tip of the drain pipe is provided.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is a longitudinal sectional view showing an embodiment of the sewage tank pipe connection structure of the present invention, and FIG. 2 is a sectional view of a short pipe of the sewage tank pipe connection structure shown in FIG. First, as shown in FIG. 1, this sewage dredger 10 is provided with an invert 12 at the bottom of the dredged main body 11 opened upward, and communicates with the invert 12 to the inlet 13 and the outlet on the side wall of the dredged main body 11. 14 is provided. An enlarged diameter receiving port 15 is provided at the upper portion of the main body 11, the lower end of the cleaning tube is connected to the expanded diameter receiving port 15 via a rubber ring, and the upper end of the cleaning port tube is a lid. (Not shown).
[0008]
The inflow port 13 is provided with an enlarged diameter receiving port 16, and the end portion of the inflow side drain pipe 17 is inserted into and connected to the enlarged diameter receiving port 16. Further, a short pipe 18 projects from the outlet 14, and an enlarged diameter receiving port 20 provided in a drain pipe 19 on the outflow side is extrapolated to the tip of the short pipe 18 so that the sewage tank 10 and the drainage are discharged. The tube 19 is connected.
[0009]
Three ribs 21, 22, 23 are provided on the outer periphery of the short pipe 18, and the two ribs 21, 22 on the distal end side have an outer diameter that is an enlarged diameter receiving port at the distal end of the drain pipe 19. A groove mounting portion 25 having a groove shape for mounting the packing 24 is formed between the ribs 21 and 22. The packing 24 is provided with a plurality of projecting pieces 24a on the outer periphery, and is formed in a groove formed between the projecting pieces 24a so that the water-expandable rubber 26 can be attached as necessary. .
[0010]
As shown in FIG. 2 , the rib 23 on the base side from the packing mounting portion 25 sets the shape of the rib 23 so that the outer diameter A in the vertical direction corresponds to the inner diameter of the enlarged diameter receiving port 20 and is horizontal. The outer diameter B in the direction is formed in an oval shape or an ellipse shape in which the outer diameter B is set smaller than the inner diameter of the enlarged diameter receiving port 20, and by forming in this way, only the connection angle in the horizontal direction can be adjusted. Can do .
[0012]
That is, when the short pipe 18 and the drain pipe 19 are connected via the packing 24, the rib 23 having the above-described shape is in contact with the rib 23 at the upper and lower sides of the enlarged diameter receiving port 20, and the side portion and the rib. 23, a gap exists, so that the axis of the short pipe 18 and the axis of the drain pipe 19 can be displaced in the horizontal direction around the packing 24 portion, but in the vertical direction, the rib 23 and Displacement is prevented by contact with the inner surface of the enlarged diameter receiving port 20.
[0013]
Therefore, when connecting the drain pipe 19 to the dirty Mizumasu 10, while preventing the drainage tube 19 is reversed gradient, it is possible to adjust the connection angle in the horizontal direction.
[0014]
Furthermore, by providing the rib as shown in the above embodiment , it is possible to prevent earth and sand from entering the pipe connection portion and the packing 24 portion, and to improve the strength of the short pipe 18. Further, the packing mounting portion 25 can be formed as a concave groove without providing a rib on the outer surface of the short tube 18, but the flat strength of the short tube 18 is formed by forming the packing mounting portion 25 with the ribs 21 and 22. Can be further increased.
[0015]
The drain pipes 17 and 19 are rib pipes having high flat strength, but ordinary pipes can also be used. In addition, the packing 24 also has a plurality of protruding pieces 24a to increase the water-stopping property and can be fitted with the water-expandable rubber 26. However, a normal rubber packing can also be used.
[0016]
【The invention's effect】
As described above, according to the pipe connection structure of the sewage tub according to the present invention, the drain pipe is connected in the horizontal direction while preventing the drain pipe from being reversely inclined by providing an oval or elliptical rib. The angle can be adjusted. In addition, the strength of the short pipe connecting the drain pipe with the rib can be improved, and prevention of earth and sand can be prevented.
[Brief description of the drawings]
Figure 1 is a longitudinal sectional view showing an embodiment of a tube connecting structure sewage chambers of the invention.
FIG. 2 is a cross-sectional view of a short pipe of the sewage tank pipe connection structure shown in FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 ... Sewage basin, 11 ... Saddle main body, 12 ... Invert, 13 ... Inlet, 14 ... Outlet, 15 ... Expanded receiving port, 16 ... Expanded receiving port, 17 ... Drain pipe, 18 ... Short tube, 19 ... Drain pipe, 20 ... Diameter expansion receptacle, 21, 22, 23 ... Rib, 24 ... Packing, 25 ... Packing mounting part, 26 ... Water-expandable rubber

Claims (1)

In the pipe connection structure for connecting the drainage pipe to the sewage discharge outlet, a packing mounting part is provided on the outer periphery of the tip of the short pipe protruding from the outlet for mounting the packing that seals the gap between the drainage pipe In addition, a rib formed on the outer periphery of the short pipe on the base side from the packing mounting portion, the outer diameter in the vertical direction corresponds to the inner diameter of the tip of the drain pipe, and the outer diameter in the horizontal direction is smaller than the inner diameter of the tip of the drain pipe A pipe connection structure for a sewage basin characterized by a protruding structure.

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