JPH0532711U - Hazardous exhaust purification device - Google Patents

Abstract

(57) [Summary] [Purpose] The structure is simple and good purification efficiency is achieved for a relatively long period of time to prevent the harmful gas contained in the final exhaust gas that has passed through the muffler of an automobile from being released into the atmosphere. To provide a device for purifying harmful exhaust gas that can be held and that is easily removable. A plurality of propellers that are rotatable around a central axis of the pipe (1) removably connected to an exhaust passage and have an absorbent material (4) such as activated carbon attached to the entire surface thereof. (2) Or, the outer peripheral wall is provided with pores (9a) and the inner peripheral surface is provided with an absorbent layer (11, 12) made of activated carbon or the like, and is rotatably mounted around the central axis of the tubular body. A hollow cylinder (9) is housed. A liquid spray may be supplied to the plurality of propellers by a spray nozzle (6) attached to the pipe body.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a device for purifying harmful exhaust gas suitable for an engine, a boiler, etc., which has a filter device for collecting harmful particulate components in exhaust gas in an exhaust passage.

[0002]

[Prior Art]

 Various types of purifiers of this type have been proposed and used in the past (for example, see JP-B-61-39059 and JP-B-41-40892).

[0003]

[Problems to be solved by the device]

 By the way, in the conventional purification device of this type, the entire device for increasing the purification efficiency becomes complicated and expensive, and the simple device has a poor purification efficiency and has a short life due to clogging or the like. There was a problem that I said.

The present invention has been made in view of the above problems of the prior art. The purpose of the present invention is that harmful gas contained in the final exhaust gas that has passed through a muffler of an automobile is released into the atmosphere. In order to prevent its release into the interior, it is intended to provide a device for purifying harmful exhaust gas which is easy to attach and detach and which can maintain good purification efficiency for a relatively long period of time despite its relatively simple structure. Is.

[0005]

[Means for Solving the Problems]

 In order to achieve the above object, the purifying device according to the present invention has a pipe body detachably connected to an exhaust passage of an engine or the like and an outer diameter inside the pipe body that is slightly smaller than the inner diameter of the pipe body. A filter device including a plurality of propellers rotatably arranged around the central axis of the tubular body at intervals, and an absorbent material such as activated carbon adhered to the entire surface of each blade of the propeller. Is equipped with. The pipe body may be provided with a spray nozzle for supplying the liquid spray to a room inside the pipe body different from the room in which the propeller is arranged.

Further, the purifying apparatus according to the present invention has an outer diameter slightly smaller than the inner diameter of the pipe body, a large number of pores on the outer peripheral surface, and a central axis of the pipe body. It includes a hollow cylinder rotatably mounted on its periphery and closed at both ends, and a drive device for rotating the hollow cylinder. An absorbent material layer such as activated carbon is provided on the entire inner peripheral surface of the hollow cylinder. It may be equipped with a filter device.

[0007]

[Action]

 The exhaust gas that has entered the purification device passes through the pipe while rotating multiple propellers with the exhaust gas pressure.During that time, the exhaust gas comes into contact with a relatively large area corresponding to the total front and back area of each blade, and As a result, the harmful fine particles are collected very efficiently by the absorbent. In this case, depending on the type of fine particles in the exhaust gas, the fine particles can be removed by supplying the liquid spray into a room different from the propeller chamber provided in the pipe body.

Further, when a hollow cylinder having a large number of fine pores provided with an absorbent layer is rotated at a low speed by a driving device in the tubular body, the exhaust gas that has entered the purification device comes into contact with the absorbent members from inside the hollow cylinder. After passing through the absorbing material layer and a large number of pores, it is released to the outside. Further, since the hollow cylinder rotates at a low speed, the pores do not become clogged, and the harmful fine particles are efficiently collected by the absorbent layer.

[0009]

【Example】

 Hereinafter, the present invention will be described in detail with reference to the illustrated embodiments. FIG. 1 is a schematic sectional view of the first embodiment. In the figure, 1 has an inlet 1a and an outlet 1b which are connected to an exhaust pipe via a flexible hose or the like. A hollow cylindrical pipe body (see FIG. 2) detachably attached to a proper place in the lower portion, 2 has an outer diameter slightly smaller than the inner diameter of the pipe body and has a diameter smaller than that of the pipe body 1. A plurality of propellers are rotatably spaced from each other on a support shaft 3 attached along a central axis. The propeller 2 is preferably a screen propeller having a plurality of blades arranged so that adjacent blade portions overlap each other when viewed from the inlet 1a to the outlet 1b in FIG. 1, and activated carbon is provided on the entire surface of each blade. The absorbent material 4 as described above is adhered in the form of particles or layers.

Since the first embodiment is configured as described above, the exhaust gas that has entered from the inlet 1a into the pipe body 1 passes through the pipe body while rotating the propeller 2 one after another by the exhaust pressure. During this period, the exhaust gas comes into contact with a relatively large area corresponding to the total front and back surface area of each blade, and the harmful fine particles are extremely efficiently collected by the absorbent 4.

According to the experiment, a sample having a sampling time of 30 seconds, an outside air temperature of about 20 ° C., and a nitrogen oxide (NO + NO ₂ ) concentration of 50 ppm in an idling state was passed through the above filter device, that is, a purifying device to obtain nitrogen gas. The oxide concentration was reduced to 25 ppm and a purification efficiency of about 50% could be obtained.

In the above-mentioned first embodiment, there is no problem of clogging, so by properly selecting the total number of blades of the propeller 2, the type of activated carbon, the amount of adhesion, etc., various harmful fine particles can be kept for a relatively long period of time. It can be efficiently collected over the entire range. When used for a certain period of time, the propeller 2 in the tubular body 1 may be replaced with a new one, and the replacement work is extremely simple.

FIG. 3 shows a second embodiment of the present invention. In this embodiment, each propeller 2 is simultaneously rotated by a driving device 5 such as a small geared motor via a support shaft 3, that is, the propellers are attached at appropriate places above the pipe body 1. The first embodiment is different from the first embodiment in that it has a spray nozzle 6 for supplying a liquid spray to the inside of the pipe body, which is separate from the chamber, and a liquid recovery device 7 mounted at an appropriate lower portion of the pipe body 1. different. As shown in FIG. 4, the spray nozzle 6 and the liquid recovery device 7 are respectively connected to the discharge side and the suction side of a pump device 8 mounted at a proper position on the vehicle body, for example.

Since the second embodiment is configured as described above, the propeller 2 is reliably rotated by the exhaust pressure and the rotational force from the drive device 5, so that the exhaust flow is completely discharged inside the pipe body 1. It is possible to diffuse the harmful particles into the body so as to more effectively collect the harmful particles on the absorbent material, and particularly to collect dust and the like that is remarkable in the exhaust gas from the boiler in the tube body 1. In this case, the drive device 5 may not be provided depending on the number of propellers 2 and the amount of exhaust.

FIG. 5 shows a third embodiment of the present invention. In this embodiment, instead of the propeller 2, the tube body 1 has an outer diameter slightly smaller than the inner diameter of the tube body, has a large number of pores 9a in the outer peripheral wall, and has an inlet tube 1a '. A hollow cylinder 9 rotatably mounted around the center line of the tubular body 1 via a bearing 10 and having both ends closed, and an absorbent material layer 11, 12 such as activated carbon on the entire inner peripheral surface of the hollow cylinder 9. Is provided, and the hollow cylinder 9 is rotated at a low speed by the drive device 5, which is different from the above-described embodiment.

Since the third embodiment is configured as described above, the exhaust gas that has entered the hollow cylinder 9 through the inlet pipe 1a 'passes through the absorbent layers 11 and 12 and the pores 9a and is discharged into the pipe. It goes out into the annular space between the body 1 and the hollow cylinder 9, flows in the direction of the arrow, and is discharged to the outside from the outlet 1b. During this period, the harmful fine particles in the exhaust gas are efficiently collected by the absorbent layers 11 and 12. According to experiments, the purification efficiency of nitrogen oxides was about 60%.

Also in the case of the third embodiment, since the hollow cylinder 9 is rotated at a constant low speed by the driving device 5, the absorbents come into contact with each other and are abraded to each other, so that the pores 9a, the absorbent layer 11, It is possible to maintain the initial purification efficiency for a relatively long period of time without causing clogging of 12. It should be noted that the absorbent layers 11 and 12 are made of absorbents having different properties, and the thickness and number of the layers may be appropriately selected depending on the properties of exhaust gas and the amount of exhaust gas. , Tube 1 or hollow cylinder 9 together.

[0018]

[Effect of the device]

 As described above, according to the present invention, it is possible to provide a purification apparatus of this type, which is not only extremely simple in structure and can be manufactured at low cost, but also has extremely high purification efficiency and can withstand relatively long-term use. .

[Submission date] February 5, 1992

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0009

[Correction method] Change

[Correction content]

[0009]

【Example】

 Hereinafter, the present invention will be described in detail with reference to the illustrated embodiments. FIG. 1 is a schematic sectional view of the first embodiment. In the figure, 1 has an inlet 1a and an outlet 1b which are connected to an exhaust pipe via a flexible hose or the like. A hollow cylindrical pipe body (see FIG. 2) detachably attached to a proper place in the lower portion, 2 has an outer diameter slightly smaller than the inner diameter of the pipe body and has a diameter smaller than that of the pipe body 1. A plurality of propellers are rotatably spaced from each other on a support shaft 3 attached along a central axis. The propeller 2 is preferably a screen propeller having a plurality of blades arranged so that adjacent blade portions overlap each other when viewed from the inlet 1a to the outlet 1b in FIG. The absorbent 4 and the catalyst as described above are adhered in the form of particles or layers. When the blade is made of a mesh material, the absorbent 4 and the catalyst are filled in the mesh.

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0012

[Correction method] Change

[Correction content]

In the above-mentioned first embodiment, there is no problem called clogging. Therefore, various harmful fine particles are compared by appropriately selecting the total number of blades of the propeller 2, the type of activated carbon, and the amount of catalyst adhering. It can be efficiently collected over a very long period of time. When used for a certain period of time, the propeller 2 in the pipe body 1 may be replaced with a new one, and the replacement work is extremely simple.

[Procedure 3]

[Document name to be amended] Statement

[Correction target item name] 0015

[Correction method] Change

[Correction content]

FIG. 5 shows a third embodiment of the present invention. In this embodiment, instead of the propeller 2, the tube body 1 has an outer diameter slightly smaller than the inner diameter of the tube body, has a large number of pores 9a in the outer peripheral wall, and has an inlet tube 1a '. A hollow cylinder 9 rotatably mounted around the center line of the tubular body 1 via a bearing 10 and having both ends closed, and an absorbent material layer 11, 12 such as activated carbon on the entire inner peripheral surface of the hollow cylinder 9. Further, the present embodiment is different from the above-described embodiments in that the hollow cylinder 9 is rotated at a low speed by the drive device 5 by providing a catalyst layer or the like (not shown).

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0016

[Correction method] Change

[Correction content]

Since the third embodiment is configured as described above, the exhaust gas that has entered the hollow cylinder 9 through the inlet pipe 1a 'passes through the absorbent layers 11, 12, the catalyst layer and the pores 9a. It goes through into the annular space between the tube 1 and the hollow cylinder 9, flows in the direction of the arrow, and is discharged to the outside through the outlet 1b. During this time, the harmful fine particles in the exhaust gas are efficiently collected by the absorbent layers 11 and 12. According to experiments, the purification efficiency of nitrogen oxides was about 60%.

[Procedure Amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0017

[Correction method] Change

[Correction content]

Also in the case of the third embodiment, since the hollow cylinder 9 is rotated at a constant low speed by the driving device 5, the absorbents come into contact with each other and are abraded to each other, so that the pores 9a, the absorbent layer 11, It is possible to maintain the initial purification efficiency for a relatively long period of time without causing clogging of 12. It should be noted that the absorbent layers 11 and 12 are made of absorbents having different properties, and the thickness and number of the layers may be appropriately selected depending on the properties of exhaust gas and the amount of exhaust gas. The catalyst layer is exchanged with the hollow cylinder 9. It should be noted that an exhaust fan may be provided in the inlet pipe 1a 'and / or the outlet 1b in order to more effectively perform the exhaust. Further, a radiator chamber in which cooling water is circulated by a pump is defined in the pipe body 1 between the inlet pipe 1a and the hollow cylinder 9 to control the temperature of the exhaust gas flowing from the inlet pipe 1a 'into the hollow cylinder 9. If it is kept constant, the absorption effect of the absorbent layers 11 and 12 and the catalyst layer can be further enhanced, and it can be used for a longer period of time.

[Brief description of drawings]

FIG. 1 is a schematic sectional view of a first embodiment of the purifying device of the present invention.

FIG. 2 is an explanatory view showing a mounting state of the first embodiment on an automobile.

FIG. 3 is a schematic sectional view of a second embodiment of the purifying device of the present invention.

FIG. 4 is an explanatory view showing a mounting state of the second embodiment on an automobile.

FIG. 5 is a sectional view of a third embodiment of the purifying device of the present invention.

[Explanation of symbols]

 1 Pipe 1a Inlet 1a 'Inlet pipe 1b Outlet 2 Propeller 3 Support shaft 4 Absorber 5 Drive device 6 Liquid atomizing nozzle 7 Liquid collector 8 Pump 9 Hollow cylinder 9a Pore 10 Bearing 11, 12 Absorbent layer

Claims (3)

[Scope of utility model registration request] 1. A purification device for harmful exhaust gas, comprising a filter device for collecting harmful particulate components in exhaust gas in an exhaust passage of an engine or the like, wherein the filter device is a pipe detachably connected to the exhaust passage. A body and a plurality of propellers having an outer diameter slightly smaller than the inner diameter of the tube and rotatably spaced about a central axis of the tube, An apparatus for purifying harmful exhaust gas, characterized in that an absorbent such as activated carbon is attached to the entire surface of each blade of the propeller. 2. The purifying apparatus according to claim 1, wherein the pipe body is provided with a spray nozzle for supplying a liquid spray to the inside of the pipe body. 3. A device for purifying harmful exhaust gas, which comprises a filter device for collecting harmful particulate components in exhaust gas in an exhaust passage of an engine or the like, wherein the filter device is a pipe detachably connected to the exhaust passage. A body having an outer diameter slightly smaller than the inner diameter of the tubular body, a large number of pores on the outer peripheral wall, and rotatably mounted around the central axis of the tubular body. And a drive device for rotating the hollow cylinder, and an absorbent layer such as activated carbon is provided on the entire inner peripheral surface of the hollow cylinder to remove harmful exhaust gas. Purification device.