KR200268456Y1 - Device for connecting pipe in manhole - Google Patents

Abstract

The purpose of the present invention is to provide a watertight connection to the manhole pipe connection regardless of the outer diameter of the sewer pipe, and to easily connect the sewer pipe to the pipe connection without using cement mortar, filler, or adhesive. It is to provide a manhole pipe connecting device that improves the convenience of construction.

The present invention is a mandrel pipe connecting device including an elastic member positioned outside the sewer pipe and connected to the sewer pipe and the sewer pipe, and expansion means for expanding the outer diameter of the elastic member to closely contact the pipe connection with the sewer pipe. to provide.

Description

Device for connecting pipe in manhole}

The present invention relates to a manhole in which a pipe connection port is formed on a wall, and more particularly, to a manhole pipe connection device for closely connecting a pipe connection port and a pipe of a manhole regardless of the outer diameter of the pipe installed in the pipe connection port. will be.

Although there are some differences in the conventional manhole, various types of pipe fittings are formed on one side of the side wall, and sewage is directly connected to the sewer pipe to the pipe fitting of the side wall, and water is installed in the manhole according to the purpose. The water supply pipe is connected through the manhole's pipeline connection. In the telecommunication manhole, the conduit or bundle of wires is introduced into the fuselage through the pipeline connection in the side wall.

Here, in the case of the sewage, the connection structure of the sidewall pipe connection port of the manhole and the sewer pipe is very important. After connecting the sewer pipe to the pipe connection formed in a predetermined size in the manhole, the PVC material was melted and soldered or covered with filler, adhesive or cement mortar between the outer circumference and the gap of the connection.

However, in the conventional construction method, when the precision construction is not performed, if external vibration and tectonic movements occur after installation, the filler, adhesive, or cement mortar of the connection part is easily broken and the leakage occurs from the connection part. Due to the water leakage, there is a problem of settlement of the ground, which requires much attention during construction, and even if precise construction is done, it does not have its own elasticity, so the elevation and settlement of the ground due to external conditions, that is, the temperature change and impact according to the season If the action occurs there is a disadvantage that the soldering portion is damaged.

And above all, there is a problem that the construction itself is difficult when the diameter of the pipe connection port and the diameter of the drain port are large.

In addition, in the case of a structure in which a separate coupling port is used in the main sewer pipe of the registration number 195784 published in Korean Utility Model Publication, the branch sewer pipe coupling port is connected to a branch sewer pipe in a hole formed in the main sewer pipe. A diffraction portion having rubber packing is formed therein, and the other end thereof covers the hole with a connection socket in which a coupling part is formed, and couples the connection socket to the main sewer pipe by applying an adhesive around the hole formed in the coupling part and the main sewer pipe. The sewer pipe and the coupling part are fastened to be integrated by a band. This is because if the earthquake or severe vibration is continuously received at the branch sewer pipe connected to the main sewer pipe or if the earthquake changes during thawing, the band is pushed to the left and right, and the connection part is separated and leaks. Is generated and the branch sewer pipe Same is possible to have, but because the flowability of the cross direction (longitudinal direction) of the main sewage pipe, there is a problem that the diffraction portion from leaving the branch sewer.

In addition, the Republic of Korea Utility Model Registration No. 242733 discloses a sewer pipe connecting socket that can ensure the watertightness and flexibility by inserting a rubber packing inside and outside the connecting socket, but this design also suitable for the diameter of the pipe connection and the diameter of the sewer pipe Only when the connection can be installed through the socket, there is a problem that the connection socket of various sizes must be provided in advance for the application of sewage pipes of various outer diameters.

In other words, even if the cement pipe or plastic material pipe used as the sewage pipe, even if the inner diameter is the same, the pipe thickness is different according to the material and the outer diameter is changed accordingly, the problem of the prior art as mentioned is a sewage pipe having a variety of outer diameter All are satisfactory and they do not connect to the manhole's duct.

Accordingly, the present invention has been made to solve the above problems, it is an object of the present invention to provide a pipe connecting device of the manhole that can be connected while maintaining the watertight to the pipe connection port of the manhole irrespective of the outer diameter of the sewer pipe.

In addition, the present invention has another object to provide a manhole pipe connecting device that can easily connect the sewer pipe to the pipe connection port without using cement mortar, fillers, adhesives, etc. to improve the convenience of construction.

1 is a front view showing a pipe connecting device according to the present invention,

2 is a schematic cross-sectional view showing a state in which a pipe connecting device according to the present invention is installed in a pipe;

3 is a schematic cross-sectional view showing a state of use of the pipe connecting device according to the present invention.

Explanation of symbols on the main parts of the drawings

10: hollow ring 11: insertion hole

20: bolt 21: nut

30: fastening ring 31: insertion hole

In order to achieve the object as described above, the present invention includes an elastic member positioned between the pipe connection port and the sewer pipe of the manhole, expansion means for expanding the outer diameter of the elastic member to close contact between the pipe connection port and the sewer pipe.

The present invention is characterized in that the elastic member is inserted into the outer side of the front end of the sewage pipe to form a ring located between the manhole duct connection and the sewer pipe, the interior is characterized in that the hollow ring of the structure is expandable to the outside of the via.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a front view showing a pipe connecting device according to the present invention, Figure 2 is a schematic cross-sectional view showing a state in which the pipe connecting device according to the present invention is installed in the pipe, Figure 3 is a pipe connecting device of the present invention It is a schematic sectional drawing which shows the use condition.

According to the above drawings, the present invention is located between the front end of the sewer pipe 60, the pipe connection port 51 and the sewer pipe 60 of the manhole 50 is located inside the hollow ring 10 and the hollow structure, hollow Expansion means for expanding the outer diameter of the ring 10 to be in close contact between the pipeline connection port 51 and the sewer pipe (60).

The hollow ring 10 is made of a material having its own elastic force, such as rubber, and may be in the form of a circular cross section, and preferably in the elliptical cross section so as to maximize the expansion rate of the outer surface.

The expansion means is inserted into the longitudinal direction of the sewage pipe (60) at a predetermined interval along the hollow ring 10, the insertion hole 11 formed at both ends of the hollow ring 10, and fixed to one side of the insertion hole (11) And a bolt 20 inserted into the other insertion hole 11 and fastened to the nut 21.

Accordingly, when the bolt 20 is fastened to the nut 21, the hollow ring 10 located between the bolt head and the nut 21 is tightened inward, and the outer diameter thereof is expanded to allow the sewer pipe 60 and the manhole 50 to be inflated. It is blocked between the pipe connection port (51).

The bolts 20 are installed along the distal end of the hollow ring 10 and the force applied when tightened to the bolt 20 is evenly transmitted to the hollow ring 10 so that the hollow ring 10 has the same ratio as a whole. It can be expanded to, and the larger the outer diameter of the pipe is to increase the number so as to be able to fully tighten the hollow ring (10).

In addition, the hollow ring 10 may reinforce the thickness of both front end portions in comparison with the flesh thickness of the side surface, or may form a sufficient tooth in the inner hollow portion in which the bolt insertion hole 11 is formed, and the bolt 20 and the nut 21 may be formed. To withstand the pressure exerted by the

In addition, a hexagonal groove is formed outside the coupling groove of the hollow ring 10 to insert the hexagonal nut 21 to fix the movement of the nut 21 with respect to the hollow ring 10 when the bolt 20 is fastened. It is supposed to be.

On the other hand, the expansion means further includes a pressure distribution fastening ring 30 is attached to both ends of the hollow ring (10).

The fastening ring 30 is a circular plate having the same size as the front end of the hollow ring 10 is attached or adhered to both sides of the flat ends of the hollow ring 10 and the insertion hole 11 formed in the hollow ring 10 and The bolt insertion hole 31 is also formed at the same position.

According to the installation of the fastening ring 30, even if a few bolts 20 are used, the entire hollow ring 10 can be expanded evenly.

In addition, the nut 21 may be welded to the fastening ring 30, and preferably, a female screw may be processed in the bolt insertion hole 31 formed in the fastening ring 30 to serve as a function of the nut 21 itself. By doing so, the bolt 20 passing through the insertion hole 11 of the hollow ring 10 may be directly coupled to the insertion hole 31 of the fastening ring 30.

The operation of the sewer pipe 60 connecting device having the above-described structure will be described with reference to FIGS. 2 and 3. As shown in FIG. 2, the inner diameter of the pipe connection port 51 of the manhole 50 and the outer diameter of the sewer pipe 60 are illustrated. Since the mutual size does not match, it can be seen that there is a gap that is not filled with a normal connection socket, and this connection device connects the sewer pipe 60 and the manhole 50 by filling the gap with a simple operation. .

The hollow ring 10 as the connection device is prepared in a state in which the bolt 20 penetrates through both fastening rings 30 and is fastened to the nut 21. In this state, the hollow ring 10 is inserted into the side surface of the sewage pipe 60 and the manhole 50. It is located at the side conduit opening (51).

In this state, the operator tightens the bolt 20 against the nut 21 located on the opposite side of the hollow ring 10 by turning the bolt head directed toward the manhole 50 using a screwdriver or other jig.

When the bolt 20 is fastened to the nut 21 and continues to be tightened, the gap between the bolt head and the nut 21 gradually decreases, thereby pressing both ends of the hollow ring 10 to the inside, and the hollow ring 10. As both ends are pressed inward, both sides are expanded outward.

Eventually, as shown in FIG. 3, both sides of the hollow ring 10 are pushed out and inflated to closely contact the outer surface of the sewage pipe 60 and the inner surface of the pipe connector 51.

As the hollow ring 10 expands as described above, the gap between the pipe connection port 51 of the manhole 50 and the sewer pipe 60 is filled by the hollow ring 10 to secure the watertightness and at the same time firmly secure the sewer pipe 60. It becomes to be able to install in (50).

According to the pipe connection device of the manhole according to the present invention as described above, sewer pipes of various sizes and materials can be installed in the manhole regardless of the size of the sewer pipe or the pipe connection port of the manhole.

In addition, it is possible to install the sewage pipe in the manhole pipe connection by a simple operation, it is possible to improve the convenience of the construction, thereby reducing the effort and time required during the construction has the effect of reducing the cost.

Claims (5)

An elastic member inserted outside the sewer pipe and positioned between the pipe connection port of the manhole and the sewer pipe, Expansion means for expanding the outer diameter of the elastic member in close contact between the pipe connection and the sewer pipe Manhole pipe connecting device comprising a. The manhole pipe connecting device according to claim 1, wherein the elastic member is formed of an annular hollow ring having a hollow structure. 3. The manhole connecting device according to claim 2, wherein the hollow ring has an elliptical cross section. According to any one of claims 1 to 3, The expansion means is inserted into the insertion hole formed in the longitudinal direction of the sewage pipe at both ends of the hollow ring, a nut fixed to one side of the insertion hole, the other insertion hole Manhole connection device comprising a bolt that is fastened to the nut. 5. The manhole connecting device according to claim 4, wherein the expansion means further includes a fastening ring attached to both ends of the hollow ring to distribute the pressing force of the bolt to the entire hollow ring.