JPS5833177Y2 - drainage device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a drainage device such as a sink, and prevents forgetting to install a flameproof layer that constitutes a drain trap, and also eliminates the emission of bad odors when cleaning the flameproof layer.

Generally, drainage devices such as sinks are provided with a flame retardant layer to prevent bad odors from sewage, and this flame retardant layer forms a drain trap to obtain a deodorizing effect.

However, the flame retardant layer may be removed when cleaning the inside of the drainage device and then forgotten for use, resulting in a problem that no odor control effect can be expected.

Another disadvantage is that a bad odor is emitted while the flame retardant layer is removed for cleaning.

The present invention solves these conventional drawbacks, and embodiments thereof will be described below with reference to the accompanying drawings.

In the figure, reference numeral 1 denotes a drain tube with an upper opening at the bottom of the water tank 2, and a step 3 in the circumferential direction is formed on the circumferential wall slightly below the center. Reference numeral 74 denotes the center of the bottom wall of the drain tube 1. a drain pipe that penetrates through the drain pipe and protrudes into the upper end or into the drain pipe 1, 5
, 6 is a protrusion and a circumferential rib formed at the upper end of the drain pipe 4 and slightly below it, and 7 is a valve seat made of synthetic resin or the like that is detachably attached to the outer periphery of the upper end of the drain pipe 4. Formed from the lower end of the outer periphery: the notch 8 is engaged with the protrusion 5 to prevent rotation, and the groove 9 formed on the inner periphery is engaged with the rib 6 to prevent removal. ), 7.

The valve seat ring 7 has a radial groove 10 at its opening,
The guide rod 11 is installed vertically from this point.

12 moves up and down using the guide rod 11 as a guide, and the valve seat ring 7
A valve 13 is a spring for closing the valve.

Reference numeral 14 denotes a flame retardant layer that is removably installed in the drain pipe 1, and is positioned overlapping the upper outer periphery of the drain pipe 4 at a constant interval to form a drain trap.

Further, the flame retardant layer 14 has a flange 15 in which a large number of water passage holes 15' are formed, and the outer peripheral edge of the flange 15 is placed on the step portion 3.

Reference numeral 16 denotes a projection provided slightly above the step portion 3, and reference numeral 17 represents a locking projection formed above the flange 15 in correspondence with the projection 16, the upper surface of which is inclined in the circumferential direction.

18 indicates a notch. To install flameproof layer] 4, first install the protrusion 16.
The outer periphery of the flange 15 is placed on the stepped portion 3 with the notch 18 corresponding to the notch 18, and then rotational deviation by a certain angle is good.

That is, due to the above-mentioned rotation, the inclined upper surface of the locking protrusion 17 is wedged above the protrusion 16, thereby ensuring that the flameproof layer 14 is installed without wobbling or the like.

Reference numeral 19 denotes a pair of protrusions hanging from the flameproof layer 14, and when the flameproof layer 14 is set, their lower ends push open the valve 12 against the spring 13, and the flameproof layer 14 The escape recess 20 of the crosspiece 10 is provided so that these projecting pieces 19 do not get in the way during the above-mentioned rotation of the crosspiece 10.

Reference numeral 21 indicates a rubber cage, and 22 indicates an on-off valve thereof.

In the above configuration, normally the drained water flows in a U-shape at the drain trap section as shown in FIG. 1, and flows out into the drain pipe 4 via the valve seat ring 7.

Normally, water remains in the drain trap section, and the drain pipe 4
This prevents bad odors from rising from the sewage.

From the above, when the flameproof layer 14 is removed for cleaning etc., the protrusion 1
The valve 12 whose pressing force is released by 9 closes the opening of the valve seat ring 7 by the action of the spring 13.

Therefore, in this case, the bad odor can be blocked by the valve 12 even without the flameproof layer 14.

Also, if you forget to attach the flameproof layer 14 when reusing the valve 12,
Since the water (1) remains closed, the water (1) is prevented from discharging and overflows into the drain pipe 1, thereby ensuring that the water (1) is not forgotten.

As described above, according to the present invention, not only does it emit a bad odor if you forget to apply the flameproof layer, but even if you remove the flameproof layer for cleaning etc., there is no odor, which is very convenient.

In addition, the valve seat ring is removable, making it easy to inspect and repair the valve part.Furthermore, by using a vertically moving valve, the space inside the drain pipe can be used as the operating space, making it more compact. It is something.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of a drainage device showing an embodiment of the present invention;
The figure is a partially cutaway perspective view. 1...Drain pipe, 4...Drain pipe, 7
... Valve seat ring, 11 ... Guide rod, 12.
...Valve, 13...Spring, 14...
...Flame retardant layer, 19... Projection.

Claims (1)

[Scope of utility model registration request] A drain tube with an upper opening into the water tank and a drain pipe protruding inside connected to the bottom, and a flameproof structure located so as to overlap the outer periphery of the upper part of the drain pipe and detachably installed inside the drain tube. a valve seat ring that is removably attached to the upper part of the drain pipe and has a valve that is provided to move up and down on a guide rod in the vertical direction, and a spring that biases the valve in the closing direction. A drainage device which is equipped with a deodorizing crown and whose valve is pushed open with a protrusion hanging from the crown when the deodorizing crown is attached.