JPH0545901Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field This invention is installed in water supply pipes such as sewage pipes, and effectively prevents bad odors such as gas generated in the pipes from being released into the atmosphere. The present invention relates to an air valve with a deodorizing device that can be used to remove odors.

BACKGROUND ART In recent years, as sewage water supply systems, systems in which sewage is forced to be conveyed using pumps have been increasing in place of gravity flow systems. In such pressure-fed sewage pipes, air mixed with the sewage and foul-smelling gases such as methane gas generated from the sewage can accumulate in high places within the pipe, which can impede water supply. .

Therefore, conventionally, an air valve is installed at the top of the sewer pipe to release the gas into the atmosphere.
This air valve is structured so that the exhaust gas is released directly into the atmosphere without any deodorization measures being taken against the exhaust gas, causing discomfort to nearby residents due to the foul odor from the exhaust gas. There were problems with this, including the possibility that it would lead to environmental destruction.

Therefore, the technical object of this invention is to provide an air valve with a deodorizing device that can solve the conventional problems as described above and eliminate or reduce the bad odor in exhaust gas.

Means for Solving the Problems In order to solve the above problems, the first invention of this application is that the air valve as described above has an upper part opened above the valve box as shown in FIGS. and installing a container whose lower part communicates with the ventilation hole, and allowing the gas discharged through the ventilation hole to pass through the container,
It contains a deodorizing agent or deodorizing liquid that deodorizes the exhaust gas during its passage.

Further, the second invention of this application is a container containing a deodorizing agent or a deodorizing liquid for deodorizing the exhaust gas before it is discharged from the valve box through the vent hole, as shown in FIGS. 3 to 6. The body is installed in communication with the upper part of the valve box above the upper limit level of the water level in the valve box or in a direction that intersects with the ventilation hole.

Effects In the first device, when the amount of exhaust gas accumulated in the upper part of the valve box increases, the buoyant force acting on the float valve decreases and the vent opens, allowing the gas to flow from the vent into the container. be introduced. The gas introduced into the container passes through a deodorizing agent or a deodorizing liquid therein, is deodorized during this passage, and is released into the atmosphere from the upper opening.

In the second invention, the deodorant or deodorizing liquid is applied to the gas in the valve box before the vent is opened, or the gas passing through the vent after the vent is opened. deodorize. Therefore, odorless exhaust gas is released into the atmosphere.

Effects of the invention Since this invention has the above-mentioned configuration, in the case of claim 1, the exhaust gas after being discharged from the vent, and in the case of claim 2, the exhaust gas before being discharged from the vent. Exhaust gas can be deodorized using a deodorizing agent or a deodorizing liquid, respectively, and the discomfort that has conventionally been given to nearby residents can be eliminated. Moreover, both claims 1 and 2 have a very simple structure, are easy to manufacture, and have great practical value.

Embodiment FIG. 1 shows a first embodiment. 1 is a valve box of an air valve, and this valve box 1 has a lower opening 2 that communicates with the inside of a sewer pipe (not shown), and a ventilation hole 3 in the upper part.
A cover 4 provided with is fixed. 5 is valve box 1
The guide 5 is a cylindrical guide with a bottom fixed inside, and an annular flow path 6 is formed on the outer periphery of the guide 5, and a water filling hole 7 is formed in the lower bottom wall.

Reference numerals 8 and 9 denote a float valve and a float connected in series in the vertical direction by a connecting portion 10, which are housed in a guide 5 and are adapted to be raised and lowered while being guided by the guide 5. The float valve 8 comes into contact with the valve seat 11 attached to the lower surface of the cover 4, which is the lower part of the vent hole 3, at the upper limit position brought about by the rise of the water level in the valve box 1, thereby opening the vent hole 3. Close. At the upper part of the ventilation hole 3, there is a communication pipe part 15 formed so as to protrude downward from the bottom wall of the storage tank 14, which has an opening 13 at the upper part.
The inside of the valve box 1 is connected to allow communication between the inside of the valve box 1 and the inside of the valve box 1. 17
is a cover whose role is to prevent foreign matter from falling into the tank 14 from the opening 13.

A filter 18 is installed horizontally at an intermediate position in the height direction within the storage tank 14, and 19 layers of deodorant are placed on top of this filter 18. Deodorant 1
The material 9 may be, for example, a solid or powder impregnated with cypress oil, or a sponge or the like that absorbs a liquid (for example, cypress oil).

In the above embodiment, as shown in the figure, when the inside of the valve box 1 is full of water, air and gas separated from the water accumulate in the upper part 20 inside the valve box, and as the amount gradually increases, the water level lowers, and this causes the float valve to open. The buoyant force acting on the float valve 8 and the like decreases, and the float valve 8 and the float 9 descend from the solid line position to the chain line position, which is the lower limit, and the float valve 8 separates from the valve seat 11.
By opening the vent hole 3, the accumulated gas flows from the vent hole 3 through the communication pipe section 15 to the tank 14.
be introduced within. After the gas introduced into the tank 14 passes through the filter 18 as shown by the arrow, it flows further upward through the deodorant 19 layer, and then passes through the opening 1.
The deodorizing agent is released into the atmosphere from the deodorizing agent 3, but the deodorizing agent is deodorized when flowing through the 19 layers.

FIG. 2 is a modification of FIG. 1, and in this example, in place of the filter 18 and deodorant 19 layer, an inverted U
The shaped tube 21 is installed such that one end communicates with the communication tube section 15 and the other end opens downward near the bottom wall of the tank 14, and a deodorizing liquid 22 (for example, cypress oil) is placed in the tank 14. ). 23 and 24 are check valves installed at the other end opening of the inverted U-shaped pipe 21 and at the upper part 20 inside the valve box, and when the inside of the sewage pipe becomes negative pressure, the check valve 23 is installed.
is closed and the check valve 24 is opened, thereby preventing destruction of the pipeline and preventing backflow of the deodorizing liquid 22.

In this case, the gas introduced into the tank 14 by opening the vent hole 3 passes through the inverted U-shaped pipe 21 and enters the deodorizing liquid 22 in the tank 14, where it is mixed with the deodorizing liquid 22. After being deodorized through a chemical reaction, the opening 13
released into the atmosphere. In addition, in the above, a powdered deodorant may be used instead of the deodorant liquid 22.

FIG. 3 shows the second embodiment, and this embodiment is similar to the first embodiment.
In the embodiment, the gas discharged from the inside of the valve box 1 of the air valve through the vent hole 3 is deodorized by passing it through a deodorizing agent or a deodorizing liquid. 1, the exhaust gas is mixed with a deodorizing agent, etc., and deodorized in advance before being discharged.

Reference numeral 26 denotes a storage cylinder, inside of which a diaphragm 27 or a piston is used to contain a part containing a deodorant 28 (for example, cypress oil) and an expanding substance 29 (for example, a starter and a reactant) to cause a chemical reaction and generate gas. It is divided into sections containing things (that occur). Reference numeral 30 denotes a communication pipe provided in communication with the part containing the deodorant 28, and the tip thereof is installed so as to communicate with the upper part 20 in the valve box above the upper limit level l of the water level in the valve box 1. . The expansion substance 29 is a substance whose volume gradually expands due to, for example, a long-term chemical reaction, and has the effect of pushing up the diaphragm 27 due to this expansion.

In this case, the inside of the valve box 1 is full of water, the float valve 8 comes into contact with the valve seat 11, the vent hole 3 is closed, and gas is accumulated in the upper part 20 inside the valve box, and the expanding substance 2
Due to the diaphragm 27 pushed up as the volume of the pipe 9 increases, the communication pipe 30 is removed from inside the housing cylinder 26.
The deodorizing agent 28 is introduced little by little into the upper part 20 of the valve box, and the gas inside the valve box 1 is deodorized by this introduction.

FIG. 4 is a modification of FIG. 3, and in this example, instead of the deodorant 28 and the expanding substance 29, a sublimation or evaporative deodorant 33 (for example, a mixture of cypress oil and an oxidizing agent is placed in the storage cylinder 26). (solidified) is accommodated without passing through the diaphragm 27 or the like.
Sublimation or evaporation of the deodorant 33 is caused by factors such as a concentration difference or a chemical reaction. Therefore, in this case, the deodorizing agent 33 that has been sublimated or evaporated as appropriate is introduced from the inside of the housing cylinder 26 through the communication pipe 30 to the upper part 20 of the valve box to deodorize the gas inside the valve box 1.

FIG. 5 shows another modification, in which, for example, a storage bag 38 containing a deodorizing agent made by mixing and solidifying the cypress oil as a deodorizing liquid and an oxidizing agent projects into the upper part 20 of the valve box and is secured to the cover 4 with a screw 39. and is hanging down.

It should be noted that the above-described embodiments and modifications are merely examples of particularly preferred embodiments, and are not intended to be limiting. Further, the type of air valve is not limited to the one shown in the drawings, and various types of air valves can be applied. Furthermore, it goes without saying that the present invention is not limited to use in sewage pipes as in the embodiment, but can also be applied to water supply pipes where foul-smelling exhaust gas accumulates.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional front view showing a first embodiment of this invention, Fig. 2 is a longitudinal sectional front view showing a modification of the same, Fig. 3 is a longitudinal sectional front view showing a second embodiment, and Figs. FIG. 5 is a longitudinal sectional front view showing a modification example same as the above. 1...Valve box, 2...Lower opening, 3...Vent hole,
4...Cover, 5...Guide, 8...Float,
9... Float valve, 10... Connecting section, 11... Valve seat, 13... Opening, 14... Tank, 15... Connecting pipe section, 18... Filter, 19, 28, 33...
... Deodorant, 20 ... Upper part of valve box, 21 ... Inverted U-shaped pipe, 22 ... Deodorant liquid, 23, 24 ... Check valve,
26...Storage tube, 27...Diaphragm, 29...
...Expansion substance, 30...Communication pipe, 38...Storage bag.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. A valve box having a lower opening that communicates with the inside of the water pipe is installed in the upper part of the water pipe, and a ventilation hole is provided in the upper wall that closes the upper part of the valve box. In an air valve in which a float valve for opening and closing this vent hole is provided in the valve box so as to be able to rise and fall freely, a housing body is installed above the valve box, the upper part of which is open and the lower part communicates with the ventilation hole, and this housing body is installed. Allows gas to pass through the body through vents,
An air valve with a deodorizing device, characterized in that it contains a deodorizing agent or a deodorizing liquid that deodorizes the exhaust gas when it passes through. 2. A valve box having a lower opening that communicates with the inside of the water pipe is installed in the upper part of the water pipe, a vent is provided in the upper wall that closes the upper part of the valve box, and a float valve is used to open and close the vent. In the air valve, which is provided in the valve box so as to be able to rise and fall freely, a container containing a deodorizing agent or a deodorizing liquid for deodorizing the exhaust gas before being discharged from the valve box through the vent hole is installed inside the valve box. An air valve with a deodorizing device, characterized in that it is installed in the upper part of the valve box above the upper limit level of the water level in the box or in a direction that intersects with the ventilation hole.