JP2001263042A - Exhaust gas particulate removing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device of low cost for removing particulate in exhaust gas of a vehicle. SOLUTION: This exhaust gas particulate removing device is cylindrical and is used by connecting to an exhaust cylinder of the vehicle. On a center line of the cylinder, a brush 2 is provided at an upstream side and a fan 7 is provided at a downstream side. Many particulate discharge holes 8 are provided at a bottom of the cylinder 1, and outside of the bottom is covered with a dust trap 9. Exhaust gas flowing from the exhaust cylinder becomes a rotated flow due to a high rotation of the brush. The particulates are made to fly to a wall of the cylinder by the brush and centrifugal force, and are discharged to the dust trap through the particulate discharge holes.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for removing fine particles contained in vehicle exhaust gas.

[0002]

2. Description of the Related Art Exhaust gas from vehicles and combustion gas from factories are
Unburned particulates are harmful to health, and the solution technology is urgent. At present, methods such as reburning and a filter are common.

[0003]

SUMMARY OF THE INVENTION The object of the present invention is to provide an inexpensive and simple exhaust gas particulate removing apparatus for achieving the above object.

[0004]

The exhaust gas particulate removing apparatus of the present invention has a cylindrical shape and is used by being connected to an exhaust pipe of a car. On the center line of the cylinder, a brush is installed upstream of the motor, and a fan is installed downstream. A number of fine particle discharge holes are provided at the bottom of the cylinder, and the outside thereof is covered with a dust trap.

[0005]

The exhaust gas flowing from the exhaust pipe is turned into a rotating flow by the high-speed rotation of the brush, and the fine particles are blown to the cylinder cylinder wall by the brush and the centrifugal force, and are discharged to the dust collecting trap through the fine particle discharge hole. On the other hand, due to the rotation of the fan, a force flowing downstream is exerted on the exhaust gas, and a combined force of both acts on the fine particles. Brush hair
The fines tend to go outward because the center is dense and sparser outward. In addition, the brush has better air permeability than a filter or the like, and does not need to be clogged because it is rotated. Needless to say, a certain brush length is required to sufficiently remove the fine particles before the exhaust gas passes through the cylinder.

[0006]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. [Fig. 1]

FIG. 1 is a cross-sectional view of FIG. The shaft 3 of the brush 2 is supported at the center of the cylinder 1 via bearings 4 and 5.
The shaft 3 is connected upstream of the double-headed motor 6, and the fan 7 is connected downstream. A large number of fine particle discharge holes 8 are provided in the cylinder 1, and a trap 9 is provided outside the cylinder so as to cover the fine particle discharge holes 8. The bearings 4, 5 and the motor 6 are fixed to the cylinder by stays or the like.
The brush in this figure uses a channel brush spirally wound around the shaft 3. The bristle feet are such that they are inscribed in the cylinder. The motor is arranged outside the cylinder 1 depending on the size of the cylinder, the temperature of the exhaust gas, and other conditions, and may rotate the brush 2 and the fan 7 via a belt or the like. [Fig.2]

FIG. 2 is a cross-sectional view of FIG. The shaft 11 of the cylindrical rotary capsule 10 is supported at the center of the cylinder 1 via bearings 4 and 5. The shaft 3 is connected upstream of the double-headed motor 6, and a fan 7 is connected downstream. A large number of fine particle discharge holes 8 are provided in the cylinder 1, and a dust collecting trap 9 is provided outside the cylinder so as to cover the fine particle discharge holes 8. The bearings 4, 5 and the motor 6 are fixed to the cylinder by stays or the like. A fine particle discharge hole 12 is provided in the cylindrical wall of the cylindrical rotary capsule 10, and the upper and lower bottoms of the capsule 10 have a structure with good ventilation. Cylindrical rotating capsule 10
A brush 13 having a diameter larger than the diameter of the capsule is inserted so as to incline divergently toward the downstream.

A feature of the invention is that the brush is divergent toward the downstream of the exhaust gas flow. As described above, the fine particles can be efficiently discharged by setting the inclination of the brush along the direction of the flow of the fine particles due to the resultant force of the airflow flowing downward and the centrifugal force. In order to capture fine particles more efficiently, the cross section of the hair may be formed by a U-shaped groove or the like. One of the features of the brush used in the present invention is that an inexpensive brush such as a twisting brush can be used. In addition,
In order to prevent the fine particles of the dust trap from rising, the filter container may be enclosed in the trap and a negative pressure may be applied from the outer periphery. [Fig. 3]

FIG. 3 is a cross-sectional view of FIG. The idea is

2. A reticulated body 14 is inserted into the cylindrical rotary capsule 10 described above so as to allow fine particles to pass with a margin. As the net 14, a net or a fiber-packed one is used. There are foams made of open cells, but they must have good air permeability and no clogging. In this method, since the centrifugal force at the center is weak, a method such as forming a rod-shaped core at the center may be adopted. The installation relationship between the cylindrical rotary capsule 10 and the dust trap 9 is shown in the sectional view taken along the line II of FIG. that's all

[Claim 1]

Although the third embodiment has been described in connection with the case where it is connected to the exhaust pipe 15 of an automobile, it goes without saying that the present invention can also be used as a device for removing particulates from combustion gas in factories.
If the exhaust stack is vertical, such as a factory chimney, this cylinder is also connected vertically, and the fine particle discharge holes are provided all around the cylinder, and the associated dust collection trap is installed so as to cover it. Is done.

[0007]

The present invention has the following features. 1. By utilizing the characteristics of the brush and the centrifugal force, an inexpensive particle removing device can be provided. 2. There is no worry of clogging like a filter.

[Brief description of the drawings]

FIG. 1 is a sectional view according to [Claim 1].

FIG. 2 is a sectional view according to [claim 2].

FIG. 3 is a sectional view according to [claim 3].

FIG. 4 is a sectional view taken along the line II. 1. Cylinder 2. Brush 3 Axis 4. Bearing 5. Bearing 6. Motor 7. Fan 8. Fine particle discharge hole 9. Dust collection trap 10. Rotating capsule 11. Axis 12. Fine particle discharge hole 13. Brush 14. Reticulated body 15. Exhaust stack

Claims (3)

[Claims] 1. A shaft 3 of a brush 2 is supported at the center of a cylinder 1 via bearings 4 and 5. The shaft 3 is connected upstream of the double-headed motor 6, and a fan 7 is connected downstream. A large number of fine particle discharge holes 8 are provided in the cylinder 1, and a trap 9 is provided outside the cylinder so as to cover the fine particle discharge holes 8. The bearings 4, 5 and the motor 6 are fixed to the cylinder by stays or the like. An exhaust gas particulate removing apparatus having the above configuration. 2. A shaft 11 of a cylindrical rotary capsule 10 is supported at the center of the cylinder 1 via bearings 4 and 5. The shaft 3 is connected upstream of the double-headed motor 6, and a fan 7 is connected downstream. A large number of fine particle discharge holes 8 are provided in the cylinder 1, and a dust collecting trap 9 is provided outside the cylinder so as to cover the fine particle discharge holes 8. The bearings 4, 5 and the motor 6 are fixed to the cylinder by stays or the like. A fine particle discharge hole 12 is provided in the cylindrical wall of the cylindrical rotary capsule 10, and the upper and lower bottoms of the capsule 10 have a structure with good ventilation. A brush 13 having a diameter larger than the diameter of the capsule is inserted into the inside of the cylindrical rotary capsule 10 so as to be inclined divergently toward the downstream. An exhaust gas particulate removing apparatus having the above configuration. 3. The cylindrical rotary capsule 10 according to claim 2.
An exhaust gas particulate removing device in which a mesh member 14 is inserted into the inside of the container so as to allow the particulates to pass with a margin.