KR200256976Y1 - Reinforce structure of sealing bush for pipe end - Google Patents

Abstract

The present invention relates to a reinforcing structure of a pipe end closure bush which can reinforce the cross-sectional strength of a soft bush by forming a reinforcing rib in the inner corner portion or the inner and outer circumferential surfaces of the bush for sealing the end of the pipe. Pressed into the inside of the pipe 20, the front end is closed, the rear end is in close contact with the soft cylindrical body 34, the flange 22 formed at the end of the pipe 20, the cylindrical body 34 In the reinforcing structure of the pipe end closure bush made of the soft wing portion 36 formed integrally with the outer circumference, a plurality of reinforcing ribs 32 are formed in the cylindrical body 34.

Description

Reinforce structure of sealing bush for pipe end}

The present invention relates to a reinforcing structure of a bush for sealing pipe ends, and more particularly, to reinforce the cross-sectional strength of a soft bush by forming a reinforcing rib in the inner corner of the bush or the inner and outer circumferential surfaces of the bush for sealing the pipe ends. It relates to a reinforcing structure of a bush for sealing pipe ends.

In general, for connecting pipes, if the pipe diameter is relatively small, both ends are welded or connected using a coupler. If the pipe diameter is relatively large, the donut-shaped flange is cut after cutting the end of the pipe. It is welded to the end of the end, and the sealing material is sandwiched between and joined using a bolt and a nut.

If the flanged pipe is left open before assembly, foreign substances such as water, dust, and powder may be introduced into the pipe, and when such foreign substances are assembled into the pipe, the internal The foreign matter remaining in the tank is transferred to various devices (eg pumps, nozzles, burners, combustion chambers) together with the fluid, causing serious damage to the machine.

In particular, in the construction of a large ship, the ship is divided into blocks and then assembled. In this process, the pipe connection between the block and the block depends mostly on the flange joint, and when the end of the pipe is not sealed, water is Dust and dirt can easily enter and cause problems in maintenance.

To this end, the Applicant has made it possible to fit a soft bush of rubber at the end of the pipe in order to prevent foreign substances from entering the inside of the flanged pipe application No. 20-2001-22724 (name: for sealing the pipe end) Bush).

However, since the conventional bush has no reinforcement measures to reduce the weight while effectively reinforcing the cross-sectional strength, it is necessary to form a thicker thickness in order to obtain sufficient strength. Due to the weak structure of the leading edge, there was a problem in that the leading edge could not be restored in the crushed state and formed a gap between the pipes.

In addition, in the related art, there was a problem in that a hard ring was inserted into the inside to reinforce the strength of the bush. However, since a hard ring manufactured separately must be inserted into the inside of the bush, there is a problem of greatly increasing the manufacturing cost.

The present invention has been made to solve the above problems, the purpose of which is to maintain the shape of the bush used to seal the end of the pipe more firmly, the pipe end sealing bush that can be manufactured at a lower price To provide a reinforcement structure of.

In order to achieve the object of the present invention, it is pressed into the inside of the pipe, the front end is closed, the rear end is in close contact with the soft cylindrical body and the flange formed on the end of the pipe, integrally formed on the outer periphery of the cylindrical body A pipe end closure bush comprising a soft wing portion, wherein a plurality of reinforcement ribs are formed in a cylindrical body to provide a reinforcement structure of the pipe end closure bush.

Figure 1a is a cross-sectional view showing a first embodiment according to the present invention

Figure 1b is a front view showing a first embodiment according to the present invention

Figure 1c is an exploded perspective view showing a first embodiment according to the present invention

Figure 2a is a cross-sectional view showing a second embodiment according to the present invention

Figure 2b is a front view showing a second embodiment according to the present invention

Figure 2c is an exploded perspective view showing a second embodiment according to the present invention

Figure 3a is a cross-sectional view showing a third embodiment according to the present invention

Figure 3b is a front view showing a third embodiment according to the present invention

Figure 3c is an exploded perspective view showing a third embodiment according to the present invention

Figure 4a is a cross-sectional view showing a fourth embodiment according to the present invention

Figure 4b is a front view showing a fourth embodiment according to the present invention

Figure 4c is an exploded perspective view showing a fourth embodiment according to the present invention

Figure 5a is a cross-sectional view showing a fifth embodiment according to the present invention

Figure 5b is a front view showing a fifth embodiment according to the present invention

Figure 5c is an exploded perspective view showing a fifth embodiment according to the present invention

Figure 6a is a cross-sectional view showing a sixth embodiment according to the present invention

Figure 6b is a front view showing a sixth embodiment according to the present invention

Figure 6c is an exploded perspective view showing a sixth embodiment according to the present invention

* Explanation of Signs of Major Parts of Drawings *

20: pipe 22: flange

30: bush 32: reinforcing rib

34: cylinder 36: wing

38: round rib

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

1A to 1C show a first embodiment according to the present invention, and as shown therein, an inner end face of a cylindrical body 34 of a bush 30 inserted into a pipe 20 with a flange 22. A plurality of reinforcing ribs 32 were formed radially from the center to the corners.

Further, the reinforcing ribs 32 cross each other at the center, and the cross-sectional shape was rectangular, and was formed at a constant height from the surface.

2A to 2C show a second embodiment according to the present invention, and as shown therein, a cross section inside the cylindrical body 34 of the bush 30 inserted into the pipe 20 with the flange 22. A plurality of reinforcing ribs 32 were formed radially from the center to the corners, but the ends of the reinforcing ribs 32 were formed to be spaced apart from each other at regular intervals.

In addition, the cross-sectional shape of the reinforcing rib 32 has a rectangular shape, it was configured to achieve a constant height from the surface.

3a to 3c show a third embodiment according to the present invention, the inner cross section of the cylindrical body 34 of the bush 30 is inserted into the pipe 20 with the flange 22 as shown therein A plurality of reinforcing ribs 32 were formed radially from the center to the corners, but the ends of the reinforcing ribs 32 were formed to be spaced apart from each other at regular intervals.

In addition, the reinforcing rib 32 is formed so that the height is gradually lowered toward the center at the corner portion.

4A to 4C show a fourth embodiment according to the present invention, and as shown therein, a cross section inside the cylindrical body 34 of the bush 30 inserted into the pipe 20 with the flange 22. A plurality of reinforcing ribs 32 are formed radially from the center to the corner, but the ends of the reinforcing ribs 32 are formed to be spaced apart from each other at regular intervals from the center, and the ends of the reinforcing ribs 32 are circular. It was configured by connecting to the rib 38.

In addition, the cross-sectional shape of the reinforcing rib 32 has a rectangular shape, it was configured to achieve a constant height from the surface.

5A to 5C show a fifth embodiment according to the present invention, and as shown in the inner peripheral surface of the cylindrical body 34 of the bush 30 inserted into the pipe 20 with the flange 22. The reinforcing ribs 32 were formed in a double row, and the reinforcing ribs 32 had a semicircular cross-sectional shape, and were formed in an annular shape along the inner circumferential surface.

6A to 6C show a sixth embodiment according to the present invention, and as shown in the outer peripheral surface of the cylindrical body 34 of the bush 30 inserted into the pipe 20 with the flange 22. The reinforcing ribs 32 were formed in a double row, and the reinforcing ribs 32 had a semicircular cross-sectional shape, and were formed in an annular shape along the outer circumferential surface.

Hereinafter, the operation according to the present invention will be described in detail with reference to the accompanying drawings.

In the first to sixth embodiments shown in FIGS. 1A to 6C, the cylindrical body 34 of the bush 30 is coaxially positioned at the end of the pipe 20 on which the flange 22 is formed. When a tool such as an operator's hand or a long rod is inserted into the sieve 34 and pushed into the inside of the pipe 20, the cylindrical body 34 of the bush 30 is compressed and press-fitted into the pipe 20. Thus, the outer circumferential surface of the cylindrical body 34 of the bush 30 is in close contact with the inner circumferential surface of the pipe 20, and the wing portion 36 of the bush 30 is in close contact with the flange 22.

At this time, the radial reinforcing ribs 32 formed at the inner corners of the cylindrical body 34 increase the cross-sectional strength that resists the compressive force acting in the direction perpendicular to the axis, thereby further increasing the adhesion to the inner circumferential surface of the pipe 20. Will be

In addition, in the first to fourth embodiments shown in FIGS. 1A to 4C, since the reinforcing ribs 32 are radially formed at the inner corners of the cylindrical body 34, the load is concentrated during the indentation process. It acts to prevent buckling at the leading edge of the cylindrical body 34.

Here, in the first embodiment as shown in Figs. 1A to 1C, since the reinforcing ribs 32 cross each other at the center of the inner cross section, the compressive force acting on one side of the cylindrical body 34 is opposite through the intersection of the centers. It transmits to make the load evenly distributed.

In addition, in the second embodiment as shown in Figures 2a to 2c because the reinforcing ribs 32 are spaced apart from each other in the center, the flat surface is left in the center of the operator to be used in the process of pushing the bush 30 The hand or tool is in contact with the flat surface of the center to prevent slipping.

In the third embodiment, as shown in FIGS. 3A to 3C, the reinforcing ribs 32 are spaced from each other in the center, and are formed in a shape in which the height gradually decreases toward the center. To minimize losses.

In addition, in the fourth embodiment as shown in Figs. 4A to 4C, since the ends of the reinforcing ribs 32 are connected to each other by the circular ribs 38, the loads which are biased to one side are applied to the circular ribs ( 38) to the other side to distribute the load evenly.

On the other hand, in the fifth embodiment as shown in Figs. 5A to 5C, the annular reinforcing ribs 32 formed in a double row on the inner circumferential surface of the cylindrical body 34 have a right angle to the axis acting on the cylindrical member 34. By increasing the load, the adhesive force with the inner peripheral surface of the pipe 20 is further increased.

In addition, in the sixth embodiment as shown in Figs. 6A to 6C, the annular reinforcement ribs 32 formed in a double row on the outer circumferential surface of the cylindrical body 34 have a right angle to the axis acting on the cylindrical member 34. Increasing the load to increase the adhesion to the inner circumferential surface of the pipe 20 and at the same time the direct contact with the inner circumferential surface of the pipe 20 is compressed and acts as if the sealing.

The present invention as described above, since the reinforcing ribs are formed in the inner corner of the bush or the inner and outer circumferential surface of the bush, it is possible to maintain the shape more firmly by providing a strength that can sufficiently endure the compressive force applied when pressed into the pipe. Of course, by improving the adhesion between the pipe and the bush has an effect that can keep the pipe more airtight, and furthermore, by the reinforcing ribs to reduce the overall weight increase of the bush, the structure can significantly improve the strength Since it is possible to reduce the material, since the reinforcing rib and the bush is formed integrally, the assembly process can be eliminated, thereby reducing the manufacturing cost.

Claims (9)

Pressed into the inside of the pipe 20, the front end is closed, the rear end is in close contact with the soft cylindrical body 34, the flange 22 formed at the end of the pipe 20, the cylindrical body 34 In the pipe end closure bush consisting of a soft wing portion 36 integrally formed on the outer periphery, Reinforcing structure of the pipe end closure bush, characterized in that formed by forming a plurality of reinforcing ribs (32) in the cylindrical body (34). 2. The reinforcing structure of a pipe end closure bush according to claim 1, wherein the reinforcing rib (32) is formed radially toward the center at the inner corner of the cylindrical body (34). 3. The reinforcing structure of a pipe end closure bush according to claim 2, wherein the reinforcing ribs (32) cross each other at their centers. 3. The reinforcing structure of a pipe end closure bush according to claim 2, wherein the reinforcing rib (32) is spaced apart from the center of the cylindrical body (34) at regular intervals. 5. The reinforcing structure for a pipe end closure bush according to any one of claims 2 to 4, wherein the longitudinal cross-sectional shape of the reinforcing rib (32) is rectangular. 5. The reinforcing structure of a pipe end closure bush according to claim 4, wherein the reinforcing rib (32) has a shape that gradually decreases in height from the corner toward the center. 5. The reinforcing structure of a pipe end closure bush according to claim 4, wherein a circular rib (38) is formed integrally with the end of the reinforcing rib (32). 2. The reinforcing structure of a pipe end closure bush according to claim 1, wherein the reinforcing rib (32) is formed in a double row on an inner circumferential surface of the cylindrical body (34). 2. The reinforcing structure of a pipe end closure bush according to claim 1, wherein the reinforcing rib (32) is formed in a double row on an outer circumferential surface of the cylindrical body (34).