KR20200058970A - Drain pipe connector for fire prevention - Google Patents

Abstract

The present invention relates to a drainpipe connector for fire prevention. Specifically, the drainpipe connector for fire prevention is buried in concrete forming a floor by forming a hollow cylindrical body to effectively provide a fire prevention function by allowing a fire-resistant filler to be expanded only towards a drainpipe when a fire occurs. An inner insertion space and an outer insertion space divided to have different diameters by a partition are formed in an inlet side on a lower portion of the body. A drainpipe is inserted into the inner insertion space, and a fire-resistant filler is inserted into the outer insertion space. A cover is formed in a ring shape with a prescribed width and is coupled to the lower end of the body to cover the outer insertion space. A plurality of fixing protrusions bent to be inclined upwards from the outside of the body along the outer circumferential surface are formed on the cover. The fixing protrusions and the body are buried together in concrete.

Description

Drain pipe connector for fire prevention}

The present invention relates to a drain pipe connector for fire protection, and more particularly, to a fire drain pipe connector for preventing the spread of flame and smoke.

Drain pipe connectors, called pipe shafts (P / S) or pipe ducts (P / Ds) installed in multi-purpose buildings and apartments, are placed in the same space as the bathroom wall or sink wall, and interlayer concrete of each generation It is installed to combine sewage and wastewater discharged from each generation while vertically passing through the slab. At this time, the interlayer concrete slab is installed so that the drain pipe connector is buried to connect the drain pipes of each generation to each other by connecting the drain pipes to the top and bottom of the drain pipe connector.

On the other hand, the above-described drain pipe connector may be installed in the space between the drain pipe and the inner wall of the drain pipe connector, a refractory filler. As a result, in the event of a fire, the refractory filler expands due to heat, thereby blocking a passage through which the pipe passes, thereby blocking the propagation of flame and smoke.

However, the refractory filler is installed by inserting a drain pipe into a drain pipe connector and then inserting it. Therefore, there is a problem that installation work is cumbersome and inconvenient. In particular, since the space is formed between the drain pipe and the drain pipe connector, even if a refractory filler is inserted into the space, the drain pipe is movable, and thus has a disadvantage that it cannot be installed firmly.

In order to solve this problem, the applicant of the present invention proposes a drain pipe connector through which the construction of a refractory filler is easy but the drain pipe can be firmly coupled through Korean Patent Registration No. 10-1813611 (hereinafter referred to as 'citation invention'). Did.

Citation Invention, as shown in FIG. 1, the cap member is installed so that the refractory filler inserted in the outer fitting space does not come out, but the cap member is fixed to be sandwiched between the drain pipe and the body. As the cap member is separated by the force, it expands downward and a problem occurs that the drain pipe that needs to be closed cannot be properly blocked.

1. Republic of Korea Patent No. 10-1813611 'Drain pipe connection port'

An object of the present invention is to solve the above problems, and to provide a drain pipe connector for fire prevention, in which a fire retardant filler effectively expands only to the drain pipe side when a fire occurs, thereby effectively exerting the fire prevention function.

To achieve the above object, the fire prevention drain pipe connector according to the present invention is buried in the concrete forming the bottom by forming an empty cylindrical body, and the lower part of the body is partitioned to have different diameters by partition walls inside the entrance The inner fitting space and the outer fitting space are formed, a drain pipe is fitted into the inner fitting space, and a refractory filler is fitted into the outer fitting space, and formed in a ring shape having a predetermined width to cover the outer fitting space. A cover coupled to the lower end of the cover is provided, and the cover is formed with a plurality of fixed protrusions bent to incline upward from the outside of the body along the outer periphery, so that the fixed protrusions are embedded in the concrete together with the body.

According to the present invention, the fire-retardant filler that expands in the event of a fire does not expand downwardly but expands only toward the drain pipe by the cover fixedly fixed, and thus can effectively exert fire protection.

1 is a cross-sectional view showing a state in which a conventional drain pipe connector for fire protection is installed,
Figure 2 is an exploded perspective view showing the structure of the fire drain pipe connector according to the present invention,
Figure 3 is a cross-sectional view showing a coupled state of the fire drain pipe connector according to the present invention,
Figure 4 is a cross-sectional view showing a state in which the fire drain pipe connection according to the present invention is installed.

In the present invention, when a fire occurs, the refractory filler expands only to the side of the drain pipe and is embedded in the concrete forming the floor by forming an empty cylindrical body so that the fire protection function is effectively exerted. An inner fitting space and an outer fitting space partitioned to have a diameter are formed, a drain pipe is fitted into the inner fitting space, and a refractory filler is fitted into the outer fitting space, and the outer fitting space is formed in a ring shape having a predetermined width. A cover coupled to the lower end of the body is provided to cover the cover, and a plurality of fixed protrusions bent to be inclined upward from the outside of the body along the outer periphery, and the fixed protrusions are embedded in the concrete together with the body. It proposes a fire drain pipe connection, characterized in that.

The scope of rights of the present invention is not limited to the embodiments described below, and can be variously modified by those skilled in the art without departing from the technical gist of the present invention.

Hereinafter, the present invention will be described in detail with reference to Figures 2 to 4 of the drain pipe connection for fire protection.

The inventor's fire protection drain pipe connector includes a hollow cylindrical body 100 as shown in FIGS. 2 and 3, and the body 100 has an inlet formed toward at least the upper side and the lower side and is illustrated in FIG. 4. In the concrete forming the floor, the upper and lower inlets are buried to be exposed to the outside, and the drain pipes B are connected to each inlet, so that the drain pipes 200 between generations can be connected to each other.

The body 100 may have a circular or polygonal cross-sectional shape, and its shape is determined according to the installation location and needs. In addition, the body 100 may be formed to be adjusted in length. In the present invention, the case where the body 100 is cylindrical will be described as an example.

The body 100 is formed with a constant space along the inner circumferential surface inside the lower inlet side. The space may be formed to be divided into an inner fitting space 120 and an outer fitting space 130 partitioned to have different diameters by the partition wall 110. Therefore, the drain pipe (B) is fitted into the inner fitting space 120 and the refractory filler 200 is fitted into the outer fitting space 130. The refractory filler 200 means having a property of expanding by heat when a fire occurs.

A refractory filler 200 is installed between the body 100 and the drain pipe B, and the refractory filler 200 and the drain pipe B are separated by a partition wall 110 so that the refractory filler 200 is a drain pipe B Will not come into direct contact with. On the other hand, the drain pipe 200 is fitted into the inner fitting space 120 and is coupled in a state where the outer circumferential surface is supported by the partition wall 110, so that the shaking is minimized and the structure is safely maintained.

The refractory filler 200 may be provided in a pre-installed state on the body 100 of the fire drain pipe connector A according to the present invention, in which case it is embedded in concrete as when the present invention is constructed. Therefore, the fire retardant filler 200 is naturally installed between the body 100 and the drain pipe B by simply connecting the drain pipe B in a state in which the installation of the fire drain pipe connector A is completed. Accordingly, the work of fitting the refractory filler 100 after the installation of the drain pipe B becomes unnecessary, thereby improving the convenience of the work.

On the other hand, it is also possible to insert the refractory filler 200 into the outer fitting space 130 at a required time point without installing it in advance in the body 100. At this time, the installation work may be facilitated by the space in which the refractory filler 200 is to be installed stably secured by the outer fitting space 130.

The entrance of the inner fitting space 120 may be formed to make a difference in height from the entrance of the outer fitting space 130. This is a structure achieved by the inlet of the inner fitting space 120 is formed in a deeper position inside the body 100, the partition 110 can be formed by achieving a certain height difference from the inlet of the body 100 have.

When the refractory filler 200 is installed in the outer fitting space 130 in the body 100 having such a structure, the inner peripheral surface of the end of the refractory filler 200 is exposed toward the inside of the body 100. Therefore, the refractory filler 200 can be easily pulled out and removed by holding the corresponding portion, thereby ensuring the convenience of removal and replacement.

Meanwhile, the present invention is provided with a cover 300 covering the outer fitting space 130 at the entrance of the outer fitting space 130 into which the refractory filler 200 is fitted. The cover 300 is formed in a ring shape having a predetermined width to be coupled to the lower end of the body 100 to cover the refractory filler 200 to prevent the refractory filler 200 from falling out of the outer fitting space 130. Do it. In the case of the cover 300, when the drain pipe connector (A) for fire prevention according to the present invention is vertically erected and the refractory filler (200) is installed under the body (100), the refractory filler (200) is inserted into the outer space (130) by gravity. ) Can be prevented from falling out. Conversely, when the cover 300 is removed, the refractory filler 200 is exposed, so that it can be easily extracted from the outer fitting space 130.

The cover 300 may have a plurality of fixing protrusions 310 formed along an outer periphery, as shown in FIGS. 2 to 4, and when the cover 300 is coupled to the body 100, the fixing protrusions 310 is provided to form a state inclined upward from the outside of the body 100. The fixing protrusion 310 may be formed to have a bent state so as to incline upward from the cover 300 before coupling the cover 300 to the body 100, as well as the same as the cover 300 After being formed on a plane, the cover 300 may be coupled to the body 100 and then bent to form a fixed protrusion 310 so as to be inclined upward.

As described above, the plurality of fixing protrusions 310 bent to be inclined upward from the outside of the body 100 may be buried in concrete together with the body 100, as shown in FIG. 4, and the cover 300 is a body Since the refractory filler 200, which is firmly fixed to the (100) and expands due to heat in the event of a fire, does not expand downward and can only expand toward the drain pipe (B), it can effectively exert a fire protection function.

The fixing protrusions 310 formed on the cover 300 may be formed with piercing fixing holes 311 as illustrated in FIGS. 2 and 4, and when the fixing protrusions 310 are embedded in concrete, the Since the fixing hole 311 is also filled with concrete and hardened, the cover 300 may be more firmly fixed to the concrete.

The cover 300 may be combined with the body 100 by various coupling methods, for example, it may be combined with the body 100 by a bolt 10. More specifically, as shown in Figure 2, the body 100 may be formed with a support frame 140 protruding outward along an outer periphery at the bottom, and the cover 300 is formed by a bolt 10. It can be combined with the support frame 140.

At this time, when the bolt 10 is longer than the thickness of the cover 300 and the support frame 140, when the coupling of the cover 300 and the support frame 140, as shown in Figure 4 It can be made to protrude to the upper side of the support frame 140. The portion of the bolt 10 protruding to the upper side of the support frame 140 is buried in concrete like the fixing protrusion 310 described above, so that the cover 300 can achieve a more rigid fixing state.

On the other hand, when the cover 300 is coupled to the body 100, as shown in Figure 2, at least one sensing hole 320 may be formed through the exposed portion of the lower end of the refractory filler 200. The detection hole 320 serves to ensure that the fire retardant filler 200 rapidly expands when heat is generated in the event of a fire, and its size is formed to be similar to or slightly larger than the size of the hole through which the bolt 10 penetrates. desirable. When the size of the detection hole 320 exceeds 5 mm in diameter, the refractory filler 200 may be expanded outside through the detection hole 320 when inflated, so that it is more preferably formed to be 5 mm or less.

A: Fire drain pipe connection B: Drain pipe
10: bolt
100: body 110: partition wall
120: inner fitting space 130: outer fitting space
140: support frame 200: refractory filler
300: cover 310: fixed projection
311: Fixed hole 320: Detection hole

Claims (3)

It is embedded in the concrete forming the floor by forming an empty cylindrical body 100 inside,
In the lower portion of the body 100, an inner fitting space 120 and an outer fitting space 130 partitioned to have different diameters by a partition wall 110 inside the entrance side are formed, and the inner fitting space 120 is formed. The drain pipe (B) is fitted, the refractory filler 200 is fitted in the outer fitting space 130,
It is formed in a ring shape having a predetermined width is provided with a cover 300 coupled to the lower end of the body 100 to cover the outer fitting space 130,
A plurality of fixed protrusions 310 bent to be inclined upward from the outside of the body 100 along the outer periphery are formed on the cover 300, so that the fixed protrusions 310 are embedded in the concrete together with the body 100 Fire drain pipe connector characterized in that. According to claim 1,
The body 100 is formed with a support frame 140 projecting outward along an outer periphery at the bottom, and the cover 300 and the support frame 140 are coupled by a bolt 10,
When the bolt 10 is coupled to the cover 300 and the support frame 140, it protrudes to the upper side of the support frame 140, and the drain pipe connector for fire protection, characterized in that the projected portion is embedded in concrete. According to claim 1,
The cover 300 has at least one detection hole 320 penetrated so that a part of the lower end of the fire-resistant filler 200 is exposed, and when a fire occurs, heat is transferred through the detection hole 320 to refractory filler 200 Fire drain pipe connector, characterized in that the rapid expansion.

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