JP3035678B2 - Deodorizing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a deodorizing apparatus, and more particularly, to a deodorizing box for removing an odor of odorous gas generated in a sewerage system, a cover for an underground structure (hereinafter referred to as "manhole cover"). The present invention relates to a deodorizing device which is integrally formed with the device and which is easy to attach and detach and which has excellent deodorizing efficiency.

[0002]

2. Description of the Related Art
61-130679
What is disclosed in the gazette is known. In this device, an adsorber containing activated carbon is inserted into a manhole adapter by sealing means, and the adapter is formed so as to be adaptable to the size of the manhole by using a plurality of steps formed at an upper end thereof. Characterized in that,
The sewer odor adsorbing device is mounted by suspending the adsorber on an opening edge of the manhole via an adapter, and covering the manhole cover on the adsorbing device. Therefore, at the time of cleaning or replacement of activated carbon, the manhole cover must be opened once, and then the adsorber must be taken out together with the adapter.

[0003] Further, since the activated carbon as the deodorant is merely packed in the adsorber, the odor gas is short-circuited (short path) and it is difficult to uniformly contact the activated carbon.
There is a problem that the deodorizing efficiency is lowered, and the activated carbon is always exposed to the odorous gas and the humidity is not adjusted. Therefore, the deodorizing ability of the activated carbon impregnated with the reagent is reduced relatively quickly.

[0004]

SUMMARY OF THE INVENTION The present invention is directed to a deodorizing apparatus for solving the above-mentioned problems, and the gist of the present invention is to provide a deodorizing box provided with a deodorizing chamber and an air valve with a cover for an underground structure. An odor gas deodorizing device attached to a gas inlet side of the lower part of the deodorizing chamber, provided with a humidity control unit filled with a humidity control agent,
At the upper gas outlet side, an adsorbing portion is provided by filling the hollow portion of the multi-partition structure with an adsorbent, and the air valve is disposed at the upper gas outlet or the lower gas inlet of the deodorizing chamber. It is characterized by having been provided.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be specifically described below with reference to the drawings. FIG. 1 is a perspective plan view showing a manhole cover to which the device of the present invention is attached, and FIG. 2 shows a first embodiment of the present invention.
FIG. 3 shows a second embodiment of the present invention.

In the deodorizing apparatus of the present invention, the deodorizing box 10 is directly attached to the back side of the manhole cover 20 by the box frame 11 for accommodating the deodorizing box 10 or the reinforcing rib formed on the manhole cover 20. The deodorizing box 10 is equipped with a deodorizing chamber 12, an air valve 13 and a trap water induction plate 14, and a gas inlet side at a lower portion of the deodorizing chamber 12, Humidity control unit 15 filled with humidity control agent B
Is provided, and on the gas outlet side above the deodorizing chamber 12,
An adsorbing portion 17 filled with an adsorbent A is provided in a hollow portion of a multi-wall partition structure 16 made of a honeycomb cylindrical laminated material or a penetrating porous body. Further, the air valve 13 is attached to a gas outlet at an upper portion or a gas inlet at a lower portion of the deodorizing chamber 12 and has a function of opening and closing by the pressure of gas in the sewer. Further, the trap water guide plate 14 is mounted on the upper part of the deodorizing chamber 12 so as to be inclined toward the water sealing trap 18.

In the first embodiment shown in FIG. 2, the deodorizing box 10 is entirely surrounded by a box frame 11, and the box frame 11 is integrally attached to a reinforcing rib 21 of a manhole cover 20 by appropriate means. The adsorbing part 17 in the deodorizing chamber 12
The multi-partition structure 16 to be loaded into the multi-partition structure 1 is vertically formed by forming a number of partitions in the vertical direction in the drawing.
6 is filled with the adsorbent A in the vertical hollow portion,
7 is provided with an air valve 13 on the upper surface (gas outlet).

The deodorizing room 12 in the deodorizing box 10
And a water sealing trap 18 are partitioned by a partition wall 19, and mesh plates 15a are attached above and below the humidity control section 15 of the deodorizing chamber 12 to support the adsorbent A and the humidity control B, and to smoothly remove odor gas. It is formed so that it can pass.

In the second embodiment shown in FIG. 3, the deodorizing box 10 is directly and integrally attached to the back side of the manhole cover 2 by a box frame 11. Also, the suction unit 17
The internal multi-partition structure 16 is loaded in the left-right direction in the figure to form a large number of partitions, and has a horizontal configuration of two upper and lower stages by a partition plate 17a, and the hollow portion of the multi-partition structure 16 is filled with the adsorbent A. At the same time, the inlet side is filled with a humectant B, the outlet side is filled with a dehumidifier (humidifier) B ', and an air valve 13 is provided at the lower right gas inlet in the figure.

The deodorizing room 12 in the deodorizing box 10
And a water sealing trap 18 are partitioned by a partition wall 19, and mesh plates 15a are attached to both sides of the humidity control section 15 of the deodorizing chamber 12 to support the adsorbent A and the humidity control B and to smoothly remove odor gas. Is formed so as to pass through.

The adsorbent A to be filled in the hollow portion of the multi-partition structure 16 in the adsorbing section 17 in the present invention may be any material having an excellent deodorizing ability, such as ion exchange resin, activated carbon, and impregnated carbon. When the adsorbent A is an ion-exchange resin, a humectant such as water moss is used as the humectant B to be filled in the humidity control unit 15, and the sorbent A is activated carbon or impregnated carbon. In such a case, a dehumidifier such as silica gel is used to maintain the adsorption function of the adsorbent A for a long period of time.

In any of the above-mentioned embodiments, when the rising pressure of the odor gas generated in the sewer exceeds a predetermined value, the air valve 13 of the deodorizing box 10 opens as shown by a broken line, and the odor gas is discharged from the arrow X direction. The gas entering and passing through the deodorizing chamber 12 is deodorized, and the deodorized gas is discharged from the through hole 22 of the manhole cover 2 via the arrow Y direction. When the odor gas is weak, the air valve 13 is not opened and is not discharged.

On the other hand, the rainwater flowing down from the through-hole 22 of the manhole cover 20 and the like,
It flows in the direction, flows down from the water sealing trap 18 into the sewer, and when there is no inflow of rainwater, the stagnant water in the water sealing trap 18 blocks the rise of odor gas.

As the material of the box frame 11 used in the present invention, stainless steel, aluminum or other stainless metal is preferably used. In addition, other mesh plates 15a, a multi-partition structure 16, an air valve 13, and a partition plate 17a are used. , Partition wall 19
The trap guide plate 14 and the like can be appropriately selected from plastic materials having excellent corrosion resistance, such as polypropylene, polyethylene, and polyvinyl chloride, and applied.

Next, the results of an experiment in which the deodorizing performance of the apparatus shown in FIG. 3 was measured will be described. Before the installation of the deodorizing device, the odorous gas leaking from the opening of the underpass manhole was collected, and after the installation of the deodorizing device of the present invention, a pressure loss of 3.5 mm water column and an odorous gas passage of 12 m one month later. ^{3 of}
Odor gas that had passed through the apparatus at each time was collected, and the dilution factor was measured by the three-point comparative odor bag method. The results are shown in the table below.

Before the installation of the device After the installation of the device Before the sewage flows into the manhole 550 31 When the sewage flows into the manhole 730 41 As is clear from the above table, the use of the deodorizer of the present invention reduces the odor concentration. It could be reduced to 1/18.

[0017]

As described above, since the deodorizing device of the present invention is integrally attached to the manhole cover, it can be removed when cleaning the deodorizing box or replacing the adsorbent or the humidity control agent. In addition to being easy to install, a short-circuit phenomenon (short-circuit) of passing odor gas occurs due to a partition effect generated between the multi-partition structure loaded in the adsorption section of the deodorizing chamber and the adsorbent filled in the multi-partition structure. Pass) is eliminated, the contact area between the adsorbent and the odor gas is increased, and the deodorizing efficiency is improved.

Further, an air valve provided at the gas inlet or gas outlet of the deodorizing chamber is closed until the pressure of the odor gas reaches a predetermined value, and opened when the pressure of the odor gas exceeds the predetermined value. Therefore, the deodorizing ability can be maintained for a long period of time as compared with the conventional case where the adsorbent is constantly exposed to the odorous gas.

[Brief description of the drawings]

FIG. 1 is a plan view showing an example of a manhole cover to which a deodorizing device of the present invention is attached.

FIG. 2 is a longitudinal sectional view showing a first embodiment of the deodorizing apparatus of the present invention.

FIG. 3 is a longitudinal sectional view showing a second embodiment of the deodorizing apparatus of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 ... Deodorizing box 11 ... Box frame 12 ... Deodorizing room 13 ... Air valve 14 ... Trap water induction plate 15 ... Humidity control part 16 ... Multi-partition structure 17 ... Adsorption part 18 ... Water sealing trap 20 ... Manhole cover A ... Adsorbent B ... Humidifier

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Mitsuharu Iida 11 Ogawacho, Yokosuka City, Kanagawa Prefecture Inside the sewerage department of Yokosuka City (72) Haruka Hiura 2480 Mado, Hiratsuka City, Kanagawa Prefecture Mitsubishi Hiratsuka Plant (72) Inventor Kiyotaka Kaneko 691 Maruta, Hazuki, Kumatsuki, Hakata-ku, Fukuoka City, Fukuoka Prefecture (56) Reference: Hirai 3-83291 (JP, U) Hirai 61-130679 (JP) , U) (58) Field surveyed (Int. Cl. ⁷ , DB name) E03F 5/02 E02D 29/14

Claims (1)

(57) [Claims] 1. An odor gas deodorizing device comprising a deodorizing box provided with a deodorizing chamber and an air valve attached to a cover for an underground structure, wherein a gas inlet side of the deodorizing chamber is provided. A humidifying section filled with a humectant is provided, and a gas outlet side is provided with an adsorbing section formed by filling an adsorbent into a hollow portion of the multi-partition structure, and a gas outlet or gas inlet of the deodorizing chamber. A deodorizing device, wherein the air valve is disposed in the deodorizing device.