JP2006090079A - Structure of floor slab drain outlet - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a structure of a floor slab drain outlet suitable for the placement in a clean room carrying out floor drainage. <P>SOLUTION: According to an embodiment of the present invention, the structure of the floor slab drain port X comprises a metallic frame 1 installed inside of a through-hole 5 of a floor slab S, connected to an end of a rising pipe P and opened in a floor face F for the purpose of constituting floor drainage through a pipe P by installing the rising pipe P connected to a drain pipe (not shown in Fig.) after boring the through-hole 5 in the floor slab S of a building such as a clean room or the like, a perforated plate 2 and a leg-attached lid body 3. The metallic frame 1 has a bearing section consisting of a step formed to the floor face F opening side by reducing the diameter in cross-section. The circumferential edge of the perforated plate 2 is fitted on the bearing section 11, the plate is placed inside the cross section, and the leg-attached lid body 3 is placed on the perforated plate 2. The lid is accommodated in the metallic frame 1 so that the lid surface is flush with the floor face F. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a structure of a floor slab drainage port that is provided to form a through hole in a floor slab of a building and arrange a rising pipe connected to a drain pipe, and to drain the floor through the pipe. Specifically, the present invention relates to a structure of a floor slab drainage port installed in a clean room that performs floor drainage.

  Conventionally, clean rooms that drain floors are known as building equipment. In food factories and pharmaceutical factories, it is necessary to maintain a clean manufacturing environment (same as in clean rooms) for hygiene control and aseptic control. The floor is cleaned by regularly flowing water because the raw materials used are scattered and easily contaminated. A drain outlet is installed on the floor slab surface for such floor drainage during cleaning.

  Similarly, a precision manufacturing plant for semiconductors and the like requires a clean manufacturing environment, and the floor is not washed with water. However, in the event of a water leakage accident, the floor slab surface is drained in order to drain quickly. There is an example of installing a mouth.

By the way, the installation requirements of the floor slab drainage in the clean room are as follows.
(1) Always close the lid to ensure airtightness.
(2) It should be possible to open the door quickly in case of an emergency (no need to open the tool).
(3) The cover surface is flat and difficult to get dirty, and has no dust accumulation.
(4) The lid and the metal frame do not protrude from the floor level so that they do not hinder the movement of the floor trolley.

  A conventional drainage structure is shown in FIGS. Here, since the drain outlet lid 103 is fixed by the lifting bolt 105, when removing the lid 103, the lifting bolt 105 must be loosened and lifted by a screwdriver. Moreover, since the strainer 4 is installed in the drain outlet at a position considerably lowered from the floor surface F, there is a problem that a large step G is generated when the lid is opened. Therefore, the problems of the installation requirements (2) to (3) are not solved.

There are also proposals relating to this type of structure including drainage tools (see, for example, Patent Documents 1, 2, and 3).
JP-A-7-119188 JP-A-9-268616 JP-A-9-317094

  In any conventional technique, the problems of the installation requirements (2) to (3) are not solved.

  It is desired that the technical solution problem has a structure that satisfies all the above installation requirements.

  This invention is made | formed in view of such a situation, Comprising: The said subject is solved and the structure of the floor slab drainage port suitable for the installation to the clean room which performs floor drainage is provided.

In order to solve the problem, the present invention is configured to provide a rising pipe connected to a drain pipe by drilling a through hole in a floor slab of a building, and to drain the floor through the pipe. Improving the structure of the floor slab drain,
It consists of a metal frame that is installed in the through-hole of the floor slab and connects to the pipe end of the rising pipe and opens to the floor, an eye plate, and a lid with legs.
The metal frame has a receiving portion in which the inner circumference is stepped to reduce the cross-sectional diameter on the floor opening side,
The peripheral edge of the eye plate is engaged and placed on the receiving part and interposed in the cross section, the lid with the leg is placed on the eye plate, and the lid surface is flush with the floor surface. And is housed in the bracket frame.

  The present invention has an advantage that airtightness can be ensured when the lid is closed, the lid can be opened quickly without using a lid opening tool in an emergency, the lid surface is flat and hardly contaminated, and there is little dust accumulation. In addition, the lid surface and the metal frame are free from irregularities with respect to the floor surface, which hinders movement of the floor surface carriage, and are not easily damaged. And by installing the eye plate directly under the lid inside the drain outlet, even when the lid is opened, the unevenness to the floor surface that becomes an obstacle to the movement of the floor trolley is suppressed to a minimum, so that a large step does not occur. The work in the clean room is not always disturbed.

  The best mode for carrying out the present invention is that, in the above configuration, the receiving part is formed at a shallow position from the floor surface, the eye plate is placed, and the leg length of the lid is shortened, so that the lid is opened. The level difference with the floor is reduced.

  Further, a part of the outer periphery of the lid body is formed in a missing shape and an operation slit is provided on the lid surface so that the lid can be opened only by manual operation without using a tool.

  An embodiment of the present invention will be described in detail below with reference to the accompanying drawings. The same components as those of the conventional structure (FIGS. 3 and 4) are denoted by the same reference numerals.

  FIG. 1A is an explanatory view of a sectional view and FIG.

  FIG. 2 is an exploded perspective view of the same.

  As shown in the figure, the structure of the embodiment of the floor slab drainage port X is provided with a rising pipe P connected to a drain pipe (not shown) by drilling a through hole 5 in a floor slab S of a building such as a clean room. In order to drain the floor through the pipe P, a metal frame 1 which is provided in the through-hole 5 of the floor slab S and is connected to the pipe end of the rising pipe P and opens to the floor surface F; The legged lid 3 is constructed.

  The metal frame 1 has a receiving portion 11 having a stepped inner diameter with a reduced sectional diameter on the floor surface F opening side.

  Then, the peripheral edge of the eye plate 2 is engaged and placed on the receiving part 11 and interposed in the cross section, the legged lid body 3 is placed on the eye plate 2, and the lid surface is flush with the floor surface F. It is housed in the metal frame 1 so that it becomes one.

  Optimally, the receiving portion 11 is formed at a shallow position from the floor surface F, the eye plate 2 is placed thereon, and the leg length of the lid 3 is shortened, so that the floor surface F at the time of opening the lid is reduced. The step G is reduced.

  Further, a part of the outer periphery of the lid 3 is formed as a defect and an operation slit 31 is provided on the lid surface.

  The structure of the present invention can be implemented not only as a new installation but also as an improvement over the existing structure, and since a robust structure can be secured with simple components, it is industrially beneficial.

It is (a) sectional view explanatory drawing and (b) top view explanatory drawing which show an Example structure. It is an exploded perspective view similarly. It is (a) sectional view explanatory drawing and (b) top view explanatory drawing which show a conventional structure. It is an exploded perspective view similarly.

Explanation of symbols

1 Bracket frame
11 Receiving part 2 Eye plate 3 Lid with legs
31 Slit for operation 4 Strainer 5 Through hole F Floor G Level difference (when opened)
P Rising pipe S Floor slab X Floor slab drain
101 Packing (receiving part)
102 Snap ring
103 lid
104 Packing (lifting bolt)
105 Lifting bolt

Claims (3)

In the structure of the floor slab drainage port that is constructed to drill the through hole in the floor slab of the building and arrange the rising pipe connected to the drain pipe, and to drain the floor through the pipe,
It consists of a metal frame that is installed in the through-hole of the floor slab and connects to the pipe end of the rising pipe and opens to the floor, an eye plate, and a lid with legs.
The metal frame has a receiving portion in which the inner circumference is stepped to reduce the cross-sectional diameter on the floor opening side,
The peripheral edge of the eye plate is engaged and placed on the receiving part and interposed in the cross section, the lid with the leg is placed on the eye plate, and the lid surface is flush with the floor surface. The floor slab drainage structure is characterized in that it is housed in the metal frame.   Claim that the receiving part is formed at a shallow position from the floor, the eye plate is placed, and the leg length of the lid is shortened to reduce the step difference from the floor when opening. Item 1. The structure of the floor slab drain according to Item 1. The floor slab drainage structure according to claim 1, wherein a part of the outer periphery of the lid body is formed as a defect and an operation slit is provided on the lid surface.

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