KR200368080Y1 - A packing for double wall-pipe - Google Patents

Abstract

Packing for the double wall tube according to the present invention, the packing is inserted around the grooves and grooves of the double wall pipe is integrally bonded to the outer wall and the inner pipe is formed uneven groove or irregular projection, the pipe of the double wall pipe and other double wall pipe In the packing structure to provide a bonding force and water tightness by the packing at the time of connection,

The packing is inserted into the uneven groove to form a packing body portion to provide a primary coupling force and the first watertight, and to form a groove watertight projection on the left and right sides of the lower end of the packing body portion, the double wall pipe from the upper end of the packing body portion The upper and lower auxiliary watertight portions are formed by forming a watertight extension portion extending along a proper length of the watertight portion, and forming an upper / lower auxiliary watertight portion on which the upper and lower surfaces of the watertight extension portion are symmetrically arranged. Characterized in that the secondary coupling force and the secondary watertight by the watertight portion is made.

The present invention further forms an upper and lower auxiliary watertight portion in the watertight extension portion, thereby having a primary binding force and a first watertightness effect by the packing body portion, and by annular projections arranged in multiples on the upper and lower auxiliary watertight portions. Secondary bonding force is generated to help prevent pipe separation, and has a secondary watertight effect to block minute leakage of defects that may occur in the packing body.

Description

Packing for double wall pipes {A packing for double wall-pipe}

The present invention relates to a packing structure for double wall pipe.

In general, the double wall pipe is widely used for the use of sewage pipes, and has an inner pipe forming a flow path for transporting sewage and an appearance in which wrinkled irregular grooves or protrusions are formed to surround the inner pipe. It consists of the structure joined together integrally.

Such a double wall pipe is used as a sewer pipe continuously connected to the ground using an appropriate joint member and embedded in the ground.

At this time, when interconnecting the double wall pipe, the most important is the role of the packing to maintain the watertight at the pipe joint.

In order to maintain watertightness at the seam of the double wall pipe, various kinds of packings are used, and these packings generally use a structure that is inserted and fixed by using the uneven groove formed in the exterior of the double wall pipe.

Conventional packing to be inserted and fixed using the uneven groove of the double wall tube as described above is in contact with the uneven groove of the double wall tube is coupled to the lower end inside, and the upper end is in contact with the inner diameter of the double wall tube coupled to the outside, the coupling force and Watertight action is to be made.

However, the packing structure in the prior art has a problem in that when the packing itself or the double wall pipe is defective, sewage and wastewater are continuously leaked into the gaps to contaminate the soil.

In addition, conventionally, when an external pressure such as earth pressure is applied to an appropriate value or more, there is a problem in that the coupling force using the elasticity of the packing does not stand alone, and the pipe connection part is separated.

In particular, in the prior art packing structure, there is a problem that the watertightness relative to the packing lower ground plane is relatively weak.

An object of the present invention for solving the above problems is as follows.

First, the present invention provides a packing structure having a secondary watertight effect to prevent the separation of the tube and secondary watertightness effect to block the minute leakage in the packing body by further forming the upper and lower secondary watertight portion in the watertight extension portion. There is this.

Second, another object of the present invention is to provide a packing structure designed to solve a conventional problem in that the watertight of the packing lower ground plane is relatively weak by forming a lower auxiliary watertight portion.

Third, the present invention in forming the upper / lower auxiliary watertight portion, by arranging the annular projections for each of the asymmetric structure, so that the watertight extension extending in the longitudinal direction when the pipe joint is applied, the transverse direction at the time of pipe separation Another object is to provide a packing structure in which a compressive force is applied.

Fourth, the present invention has yet another object to provide a packing structure formed with a groove watertight protrusion on the bottom left / right side of the packing body is inserted into the uneven groove.

1 is a half cross-sectional perspective view showing a packing structure for a double wall tube according to a first embodiment of the present invention.

Figure 2 is a partial cross-sectional view showing a double wall pipe connecting structure using a packing according to the first embodiment.

3A to 3C are sectional views showing a deformable embodiment of the upper and lower auxiliary watertight portions according to the first embodiment.

Figure 4 is an enlarged cross-sectional view showing a double wall pipe packing structure according to a second embodiment of the present invention.

Figures 5a to 5c is a partial cross-sectional view showing the action during the connecting operation of the double wall of the packing according to the second embodiment.

6a to 6c are cross-sectional views showing a deformable embodiment of the upper and lower auxiliary watertight portions according to the second embodiment.

Explanation of symbols on the main parts of the drawings

10: double wall pipe 11: inner pipe

13: appearance 13a: uneven protrusions

13b: uneven groove 20: packing

21: packing body 23: watertight extension

24: upper secondary watertight portion 25: lower secondary watertight portion

26: groove watertight

Packing for the double wall pipe according to the present invention for achieving the above object, the packing is inserted around the grooves and grooves of the double wall pipe is integrally bonded to the outer and inner pipes are formed integrally with the uneven groove or projections, and In the packing structure to provide a coupling force and water tightness by the packing when connecting the pipe with other double wall pipe,

The packing is inserted into the uneven groove to form a packing body portion to provide a primary coupling force and the first watertight, and to form a groove watertight projection on the left and right sides of the lower end of the packing body portion, the double wall pipe from the upper end of the packing body portion The upper and lower auxiliary watertight portions are formed by forming a watertight extension portion extending along a proper length of the watertight portion, and forming an upper / lower auxiliary watertight portion on which the upper and lower surfaces of the watertight extension portion are symmetrically arranged. Characterized in that the secondary coupling force and the secondary watertight by the watertight portion is made.

Packing for the double wall pipe according to another embodiment of the present invention for achieving the above object, so that the packing is inserted around the grooves of the double wall pipe is integrally joined to the outer tube and the inner pipe is formed uneven groove or irregular projection, In the packing structure to provide a coupling force and water tightness by the packing when connecting the double wall pipe and the other double wall pipe,

The packing is inserted into the uneven groove to form a packing body portion to provide a primary coupling force and the first watertight, and to form a groove watertight projection on the left and right sides of the lower end of the packing body portion, the double wall pipe from the upper end of the packing body portion A watertight extension portion is formed along the exterior of the watertight extension, and an upper auxiliary watertight portion formed of a plurality of annular protrusions is formed on the top surface of the watertight extension portion, and a proper spacing is formed. To form a subsidiary watertight portion consisting of an annular projection of

By arranging the annular projections of the upper and lower secondary watertight portions asymmetrically with each other, the watertight extension portion is stretched in the longitudinal direction when the pipe is joined, and when the tube is separated, the compressive force is applied in the transverse direction to prevent the separation of the pipe. It is characterized by that.

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

1 is a half cross-sectional perspective view showing a double wall tube packing structure according to a first embodiment of the present invention, Figure 2 is a partial cross-sectional view showing a double wall tube connection structure using a packing according to the first embodiment.

In the double wall tube packing structure according to the first embodiment of the present invention as shown in the figure, the outer tube 13 and the inner tube 11, in which the uneven groove 13b or the uneven protrusion 13a are repeatedly formed, are integrally joined. The packing 20 is inserted around the uneven groove 13b of the double wall pipe 10.

At this time, the double wall pipe 10 is coupled to the packing 20 is used to connect the pipe with the other double wall pipe 10, after coupling, the coupling force and watertightness is maintained by the packing 20.

The packing 20 is inserted into the concave-convex groove 13b of the double wall tube 10 to form a packing body portion 21 provided to provide a primary coupling force and a primary water tightness. The packing body portion 21 has a lower side. In contact with the concave-convex groove 13b of the double wall tube 10, and is connected to the inner surface of the other double wall tube 10 is connected to the upper side, it has a primary coupling force and the primary watertight action by the unique elasticity. .

At this time, by forming the groove watertight protrusions 26 on the left and right sides of the lower end of the packing main body 21, not only to prevent the separation of the packing main body 21, but also to block the minute leakage flowing through the inner wall of the uneven groove (13b). It becomes possible.

The present invention forms a watertight extension portion 23 extending a proper length along the appearance of the double wall tube 10 from the upper end of the packing body portion 21, the upper / lower surface of the watertight extension portion 23, respectively Lower auxiliary watertight portions 24 and 25 are formed.

At this time, the upper and lower auxiliary watertight parts 24 and 25 are arranged in a symmetrical arrangement of a plurality of annular projections spaced at appropriate intervals.

The upper and lower auxiliary watertight portions 24 and 25 are disposed on the upper and lower secondary watertight portions 24 and 25 in addition to the primary coupling force and the primary watertight action by the packing body 21. By the annular projections, the secondary coupling force to prevent the separation of the tube is generated, there is an advantage that effectively blocks even minute leakage due to the packing body portion 21 itself defects.

In particular, when the lower auxiliary watertight portion 24, 25 is formed as in the present invention, the watertight on the grounding surface of the packing 20 upper side, as well as the watertightness relative to the lower grounding surface of the packing 20 in the related art is relatively It has the advantage of being able to solve problems that were vulnerable.

The annular protrusions of the upper and lower auxiliary watertight parts 24 and 25 according to the first embodiment of the present invention can be manufactured in a hemispherical shape as shown in FIGS. 1 to 2, as shown in FIGS. 3A to 3C. Various implementations are possible, such as losing.

3A to 3C are packing cross-sectional views showing a deformable embodiment of the upper and lower auxiliary watertight portions according to the first embodiment. As shown in FIG. 3A, the annular protrusion of the present invention may be formed in a triangular cross section, in particular, 3b. As in 3 to 3c, one surface of the triangular cross section may be formed to be perpendicular to the separation direction or to be inclined in the opposite direction.

Figure 4 is an enlarged cross-sectional view showing a double wall tube packing structure according to a second embodiment of the present invention, the packing according to the second embodiment of the present invention, as shown in the figure,

The packing body portion 21 is inserted into the uneven groove 13b of the double wall tube 10 to provide the primary coupling force and the primary watertightness, and the double wall tube 10 is formed from the upper end of the packing body portion 21. A watertight extension portion 23 is formed along the exterior 13 of the watertight extension portion 23, and the upper secondary watertight portion 24 (25) consisting of a plurality of annular protrusions formed on the upper surface of the watertight extension portion 23 by appropriate intervals. ) To form a lower auxiliary watertight portion (24) (25) consisting of a plurality of annular protrusions formed on the bottom surface of the watertight extension portion (23) at appropriate intervals;

The annular protrusions of the upper and lower auxiliary watertight parts 24 and 25 are configured to be asymmetric with each other.

At this time, by forming the groove watertight protrusions 26 on the left and right sides of the lower end of the packing main body 21, not only to prevent the separation of the packing main body 21, but also to block the minute leakage flowing through the inner wall of the uneven groove (13b). It becomes possible.

Hereinafter, with reference to the accompanying drawings, the operation of the packing and the operation of the double wall pipe applying the packing structure according to the second embodiment of the present invention having the configuration as described above at this time will be described.

5a to 5c are partial cross-sectional views showing the operation of the double wall pipe of the packing according to the second embodiment.

First, as shown in FIG. 5A, the packing 20 of the present invention, in which the annular protrusions of the upper and lower auxiliary watertight portions 24 and 25 are asymmetrically arranged, has the uneven groove 13b of the outer wall 13 of the double wall tube 10. ) Is inserted around.

At this time, the packing body portion 21 is inserted directly into the uneven groove 13b, the watertight extension portion 23 extends from the packing body portion 21 to surround the outer wall of the double wall tube (10).

Then, as shown in 5b is inserted into the inner wall of the other double wall tube 10 is inserted into the double wall tube 10 is inserted into the packing 20 of the present invention, the gap between the annular projections As shown in Figure 5a, the watertight extension portion 23 is extended in the longitudinal direction and the tensile force acts.

The tension force acts to narrow the gap between the annular projections again, and thus, watertight action is performed on the upper and lower ground planes of the watertight extension 23.

In addition, in the coupling state as described above, as shown in FIG. 5C, a force to separate each double wall pipe is generated by external pressure.

At this time, it is assumed that the double wall pipe 10 coupled to the outside as shown in the drawing is applied to the separation force P1 in the left direction, the separation force P2 in the right direction is applied to the double wall pipe 10 coupled to the inside,

The separation force P1 acts to push the upper annular projections of the packing in contact with the left side, and the separation force P2 acts to push the lower annular projections in contact with the right in the right direction.

That is, as the force to push in the left direction and the right direction with respect to the packing 20 is applied at the same time, the watertight extension portion 23 is applied to the compressive force in the transverse direction, thereby, the upper / lower auxiliary watertight portion (24) (25) Strong adhesion is made between the pipe ground plane and watertightness performance is improved.

In addition, although the annular projections of the upper and lower auxiliary watertight portions 24 and 25 shown in the second embodiment of the present invention are manufactured in a hemispherical shape, this may be variously implemented as shown in FIG. 6.

Figure 6a to 6c is a cross-sectional view showing a deformable embodiment of the upper and lower secondary watertight portion according to the second embodiment, as shown in 6a the annular projection of the present invention may be formed in a triangular cross-section, in particular, 6b As in the case of 6 to 6c, one surface of the triangular cross section may be formed perpendicular to the separation direction or inclined in the opposite direction.

Through the technical contents of the present invention having the above-described configuration, those skilled in the art can recognize that various changes and modifications can be made without departing from the technical spirit of the present invention. Therefore, the technical scope of the present invention is not limited to the contents described in the detailed description of the invention, but should be determined by the utility model registration claims.

This invention which consists of the said structure has the following effects.

First, the present invention further forms an upper / lower auxiliary watertight portion on the watertight extension portion, thereby having a primary coupling force and a first watertightness effect by the packing main body portion, and at the same time, annular protrusions disposed in the upper and lower auxiliary watertight portions. By the secondary bonding force to help prevent the separation of the tube is generated, and has a secondary watertight effect to block the fine leak to the defect that may occur in the packing body portion.

Secondly, the present invention can provide a watertight at the upper ground plane of the packing, as well as fine leakage at the lower ground plane by forming a lower auxiliary watertight portion with respect to the prior art in which the watertightness to the lower ground plane of the packing is relatively weak. Has the effect of being.

Third, the present invention in forming the upper / lower auxiliary watertight portion, by arranging the annular projections for each of the asymmetrical structure, when the pipe joint, the watertight extension is extended in the longitudinal direction, the tensile force is applied to have a watertight action, At the time of separation, the compressive force in the transverse direction is applied, making strong adhesion between the upper and lower auxiliary watertight portions and the pipe ground plane, thereby improving the watertight performance.

Fourth, the present invention by forming a groove watertight protrusion on the bottom left / right side of the bottom of the packing body to be inserted into the uneven groove, to help prevent the departure of the packing body, there is an effect of blocking the fine leakage flowing through the inner wall of the uneven groove.

Claims (3)

The packing is inserted around the uneven groove of the double wall tube in which the uneven groove or the uneven protrusion is repeatedly formed and the inner tube is integrally bonded. When the pipe is connected between the double wall pipe and the other double wall pipe, the coupling force and In the packing structure to provide watertightness, The packing is inserted into the uneven groove to form a packing body portion to provide a primary coupling force and the first watertight, and to form a groove watertight projection on the left and right sides of the lower end of the packing body portion, the double wall pipe from the upper end of the packing body portion The upper and lower auxiliary watertight portions are formed by forming a watertight extension portion extending along a proper length of the watertight portion, and forming an upper / lower auxiliary watertight portion on which the upper and lower surfaces of the watertight extension portion are symmetrically arranged. Packing for double wall pipe, characterized in that the secondary coupling force and the secondary watertight by the watertight portion. The method of claim 1, The annular projection is formed in a triangular cross-section, one side of the packing for a double wall pipe, characterized in that to form a surface inclined in the reverse direction or perpendicular to the separation direction. The packing is inserted around the uneven groove of the double wall tube in which the uneven groove or the uneven protrusion is repeatedly formed and the inner tube is integrally bonded. When the pipe is connected between the double wall pipe and the other double wall pipe, the coupling force and In the packing structure to provide watertightness, The packing is inserted into the uneven groove to form a packing body portion to provide a primary coupling force and the first watertight, and to form a groove watertight projection on the left and right sides of the lower end of the packing body portion, the double wall pipe from the upper end of the packing body portion A watertight extension portion is formed along the exterior of the watertight extension, and an upper auxiliary watertight portion formed of a plurality of annular protrusions is formed on the top surface of the watertight extension portion, and a proper spacing is formed. To form a subsidiary watertight portion consisting of an annular projection of By arranging the annular projections of the upper and lower secondary watertight portions asymmetrically with each other, the watertight extension portion is stretched in the longitudinal direction when the pipe is joined, and when the tube is separated, the compressive force is applied in the transverse direction to prevent the separation of the pipe. Packing for double wall pipes, characterized in that.