Odor Control Device

Abstract

To provide an offensive odor suppression device capable of maintaining sufficient odor suppression performance for a long time for exhaust steam generated in the process for curing a resin regeneration material in a method for covering the inner peripheral surface of an existing pipe conduit with a resin regeneration material.SOLUTION: An odor suppression device 1 for suppressing odor of exhaust steam generated in thermal curing of a resin regeneration material in the construction of a resin regeneration material for covering an inner peripheral of an existing pipe conduit includes: a mixing tank 2 for mixing exhaust steam having odor with cool air; a cool air tank 3 connected to the mixing tank 2 for storing cool air, and supplying the cool air to the mixing tank 2; and a cool air generation part 4 connected to the cool air tank 3 for sending the generated cool air to the cool air tank 3 by compressed air being supplied.SELECTED DRAWING: Figure 5

Description

[Technical field]

[0001] The present invention relates to an odor suppression device that suppresses the odor of exhaust steam generated by the thermal hardening of a resin rehabilitation material when the resin rehabilitation material is applied to cover the inner surface of an existing pipe or conduit. [Background technology]

[0002] For example, existing pipes such as sewer systems deteriorate and develop problems after many years of use.

[0003] As a technique for rehabilitating an existing pipe by excavation, there is a method in which the inner surface of the existing pipe is covered with a resin rehabilitation material, as shown in Patent Document 1.

[0004] The outline of the process for covering the inner surface of an existing pipe with a resin rehabilitation material is as follows:

[0005] (1) The process of drawing resin rehabilitation material, which is made of nonwoven fabric impregnated with thermosetting resin, into existing pipes. (2) A process of applying water or air pressure to the inside of the resin rehabilitating material to expand the diameter of the resin rehabilitating material. (3) The process of circulating heated steam inside the resin rehabilitation material to harden it. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] JP 2019-38128 A Summary of the Invention [Problem to be solved by the invention]

[0007] During the process of curing the resin rehabilitating material, the odor generated from the resin is contained in the exhaust steam.

[0008] This odor cannot be released into the air around the area where rehabilitation work is taking place as this would cause odor problems.

[0009] Conventionally, measures have been taken to suppress odors contained in exhaust steam using catalysts and activated carbon.

[0010] However, the problem with catalysts and activated carbon is that when their odor suppression performance deteriorates over time, it takes time and effort to replace them.

[0011] In order to solve the above problems, the objective of the present invention is to provide an odor suppression device that can maintain sufficient odor suppression performance for a long period of time for exhaust steam generated during the process of hardening the resin rehabilitation material in a method of covering the inner surface of an existing pipe with a resin rehabilitation material. [Means for solving the problem]

[0012] The odor suppression device of claim 1 is an odor suppression device that suppresses the odor of exhaust steam generated by thermal hardening of a resin rehabilitation material in the construction of a resin rehabilitation material that covers the inner surface of an existing pipe, and Below zero a mixing tank for mixing the cold air with the cold air; a cold air tank connected to the mixing tank, storing the cold air, and capable of supplying the cold air to the mixing tank; The cold air generated from the supplied compressed air is sent to the cold air tank. and a cold air generating section.

[0013] The odor of the exhaust steam can be reduced by cooling the exhaust steam.

[0014] According to the odor suppression device of claim 1, the exhaust steam is mixed with cold air in the mixing tank and cooled, thereby making it possible to reliably suppress odors.

[0015] In addition, by storing cold air in the mixing tank, the exhaust steam can be cooled sufficiently to provide sufficient odor suppression performance.

[0016] Furthermore, at the construction site of the resin rehabilitation material, there is a power source that generates compressed air such as a compressor used for expanding the diameter of the resin rehabilitation material before it is thermally cured. This environment allows compressed air to be supplied from this power source to the cold air generation unit. Therefore, the cold air generated in the cold air generation unit can be continuously sent to the cold air tank.

[0017] By temporarily storing the cold air generated in the cold air generating section in the cold air tank, even if the volume of cold air sent from the cold air generating section is small or the pressure of the cold air is low, it is possible to prevent exhaust steam from flowing back from the mixing tank to the cold air generating section. Effect of the Invention

[0018] The odor suppression device described in claim 1 has the effect of being able to maintain sufficient odor suppression performance for exhaust steam for a long period of time by storing sufficient cold air in the mixing tank and continuously generating cold air in the cold air generation section. [Brief description of the drawings]

[0019] [Figure 1] 1 is a schematic diagram of a resin rehabilitation material pulling-in process in a method of covering the inner surface of an existing pipe with a resin rehabilitation material. FIG. [Diagram 2] This is a schematic diagram of the process of expanding the diameter of a resin rehabilitation material in a method of covering the inner surface of an existing pipe with a resin rehabilitation material. [Diagram 3] 1 is a schematic diagram of a resin rehabilitation material hardening process in a method of covering the inner surface of an existing pipe with a resin rehabilitation material. FIG. [Figure 4] FIG. 2 is a schematic diagram showing the state after construction in a method of covering the inner surface of an existing pipe with a resin rehabilitation material. [Diagram 5] 1 is a schematic perspective view of an odor control device according to one embodiment of the present invention; DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0020] An example of a method for covering the inner surface of an existing pipe with a resin rehabilitation material will be explained using Figures 1 to 4.

[0021] The resin rehabilitating material 10 is a hose made of nonwoven fabric impregnated with a thermosetting resin.

[0022] In the pulling process shown in Figure 1, a wire rope 40 is passed through the area of ​​the existing pipe 20 where the inner surface of the existing pipe 20 has been sealed off with a water-stopping plug 30 and is planned to be covered with a resin rehabilitation material 10, and the resin rehabilitation material 10 is pulled from a refrigerated vehicle 60 by an electric winch 50.

[0023] Next, in the diameter expanding step shown in FIG. 2, a fluid such as water or air is supplied from a fluid supply vehicle 70 into the inside of the resin rehabilitating material 10, and the diameter of the resin rehabilitating material 10 is expanded by the pressure of the fluid.

[0024] The resin rehabilitation material 10 is expanded in diameter so that it adheres to the inner peripheral surface of the existing pipe.

[0025] Next, in the curing process shown in FIG. 3, steam is supplied from a steam supply vehicle 80 through a steam supply pipe 90 into the inside of the resin rehabilitating material 10, thereby heating and curing the resin rehabilitating material 10.

[0026] Next, as shown in FIG. 4, unnecessary portions of the resin rehabilitating material 10 are removed, and a planned range of the inner peripheral surface of the existing pipe 20 is covered with the resin rehabilitating material 10.

[0027] In the curing process shown in FIG. 3, in the circulation of steam, the odor of the resin rehabilitating material 10 is transferred to the exhaust steam returning from the inside of the resin rehabilitating material 10 toward the steam supply vehicle 80.

[0028] As a device for suppressing the odor of exhaust steam generated in this curing process, an odor suppression device 1 according to an embodiment of the present invention is used.

[0029] The odor suppression device 1 has a mixing tank 2, a cold air tank 3, and a cold air generation section 4.

[0030] The mixing tank 2 is connected to an exhaust steam pipe 5 through which smelly exhaust steam returns.

[0031] In addition, the mixing tank 2 and the cold air tank 3 are connected by a cold air supply pipe 6.

[0032] The cold air generating unit 4 is connected to the cold air tank 3 .

[0033] Further, a compressed air pipe 7 for supplying compressed air is connected to the cold air generating unit 4.

[0034] The cold air generating unit 4 generates cold air from the supplied compressed air and sends it to the cold air tank 3.

[0035] The cold air tank 3 can temporarily store the cold air sent from the cold air generating unit 4.

[0036] In the mixing tank 2, the smelly exhaust steam is mixed with the cold air supplied from the cold air tank.

[0037] When the exhaust steam is mixed with cold air, its temperature drops, which helps to reduce odors.

[0038] Although one example of a method for covering the inner periphery of an existing pipe with a resin rehabilitation material has been described above, the use of the odor suppression device of the present invention is not limited to this example. If it is necessary to cool odorous exhaust steam, the odor suppression device of the present invention can also be used in another example of a method for covering the inner periphery of an existing pipe with a resin rehabilitation material.

[0039] In the above embodiment, the mixing tank 2 and the cold air tank 3 are connected by the cold air supply pipe 6, but the present invention is not limited to this. The mixing tank 2 and the cold air tank 3 may be connected via a means for increasing the flow rate of cold air from the cold air tank to the mixing tank. [Explanation of symbols]

[0040] 1. Odor suppression device 2 Mixing tank 3. Cold Air Tank 4. Cold air generating section 5. Exhaust steam pipe 6. Cold air supply pipe 7 Compressed Air Pipe 10 Resin Regeneration Materials 20 Existing sewer pipes 30 Water stop plug 40 Wire Rope 50 Electric winch 60 Refrigerated Truck 70 Fluid supply vehicle 80 Steam Supply Car 90 Steam supply pipe

Claims

[Claim 1] An odor suppression device that suppresses the odor of exhaust steam generated by thermal hardening of a resin rehabilitation material in the construction of a resin rehabilitation material that covers the inner surface of an existing pipe, a mixing tank for mixing the smelly exhaust steam with sub-zero cold air; a cold air tank connected to the mixing tank, storing cold air, and capable of supplying cold air to the mixing tank; and a cold air generating unit connected to the cold air tank for generating cold air from supplied compressed air and sending the cold air to the cold air tank.

Images