JP2001300226A - Dust collector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a dust collector for removing fine particles or fly ash contained in exhaust gas from a car or an incinerator. SOLUTION: A dust collection port 2 is opened in the pipe wall of a cylinder 1 along a bus and the pipe wall on the upstream side in a brush rotary direction 3 is overlapped with the pipe wall on the downstream side. The exhaust gas sucked from the exhaust cylinder of a car becomes a rotary flow with a brush 5 rotated at a high speed and fine particles are rotated along the pipe wall of the cylinder by centrifugal force and the rotated fine particles are guided by the outside pipe wall at the dust collection port portion to be discharged into a dust collection cover.

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 and fly ash contained in exhaust gas from vehicles and incinerators.

[0002]

2. Description of the Related Art A method using a filter, a cyclone or a catalyst has been adopted as a method for removing harmful substances contained in exhaust gas of a car, unburned fine particles and fly ash of a combustion gas in an incinerator.

[0003]

The present application relates to a patent application filed on March 29, 2000 by the applicant of the present invention, which relates to an additional application relating to the title "Dust collector" of the present invention. To provide a low-cost and efficient dust collecting device.

[0004]

The dust collector of the present invention is used by being connected to a car exhaust tube or an incinerator. On the center line of the cylinder constituting the main body, brushes driven by a motor are installed while being supported by bearings of end covers at both ends of the cylinder. An intake port for sucking combustion gas and an exhaust port for exhausting dust-removed gas are formed near both ends of the cylinder. A pipe wall is opened along the generatrix of the cylinder, and a dust collection port is formed in which the pipe wall of the opening is double overlapped with the upstream side of the rotating airflow outside.

1. A dust collecting outlet trap formed at an end of a dust collecting cover is collected and discharged by a sweeping plate that slides using an inner wall surface of the dust collecting cover as a guide.

3. A collection port formed in a bus bar of a cylinder,
Install a collecting roll with the roll surface slightly looking into the tube. A friction ring whose outer periphery contacts the collecting roll is fixed to the brush shaft.

6.

[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 and fly ash in the gas are blown to the inner wall of the cylinder by centrifugal force and go around the pipe wall. Since the pipe wall on the upstream side of the rotating flow covers the pipe wall on the downstream side of the dust collecting port from the outside, the fine particles orbiting around the pipe wall are discharged from the dust collecting port into the dust collecting cover.

The fine particles accumulated on the dust collecting cover are collected on a dust collecting trap by operating a sweeping plate by pulling a sweep handle outside the cover.

4. In the patent application “Dust Collector” filed on March 29, 2000, the brush is brought into contact with the collecting roll in order to rotate the collecting roll, and the frictional force of the brush is used. Although a rotating method was adopted, in the present invention, it was possible to obtain a more reliable rotational force by bringing the friction ring into contact with the collecting roll.

6.

[0006]

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

FIG. 2 is a sectional view of the dust collecting apparatus according to the present invention, and FIG. The dust collection port 2 has a structure in which the pipe wall of the cylinder 1 is opened along the generatrix, and the pipe wall on the upstream side in the brush rotation direction 3 overlaps the pipe wall on the downstream side.
The exhaust gas sucked from the exhaust pipe 6 of the car is turned into a rotating flow by the brush 5 rotating at high speed by the motor 4, and the fine particles circulate around the tube wall of the cylinder by centrifugal force. The circulating fine particles are guided to the outer tube wall at the dust collection port and discharged into the dust collection cover.

An electric charge is removed from an end portion of a tube wall in order to eliminate a state in which electrostatically charged fine particles adhere to a tube wall of a dust collecting port and are not discharged to a dust collecting cover. By bending the end of the tube wall vertically downward, fine particles can be efficiently discharged by a combined effect such as static elimination and vibration of a vehicle or an engine.

2. The amount of exhaust gas sucked into the cylinder when the engine is idling is smaller than when the vehicle is running. At this time, as a measure to prevent the pressure in the cylinder from dropping due to the exhaust force of the fan 33 and to prevent the fine particles in the dust collecting cover from flowing back, a pressure drop in the cylinder is detected by the pressure sensor 38, and the valve 39 installed in the front stage of the fan 33 Open the valve to introduce fresh air.

An important issue is how to easily treat the discharged fine particles. The fine particles collected in the dust collecting cover are collected in a dust collecting outlet 9 formed at an end of the dust collecting cover, and are collected in a detachable dust collecting trap 10. It is also possible to use a method of dropping the container into a prepared container without using the accumulation trap due to the space at the bottom of the vehicle body. In order to discharge the fine particles collected in the dust collecting cover by an external operation, the sweeping plate 11 sliding with the inner wall of the dust collecting cover as a guide is moved by a sweeping handle 13 outside the cover connected via a connecting rod 12. Manipulate.
When the sweeping plate 11 is pulled toward the discharge port side, it moves perpendicular to the bottom surface of the cover by the support plate 14 extending below the center of gravity of the sweeping plate. 9 can be collected. Sweep plate 1
Because 1 is installed with play on the connecting rod,
12 When returning the sweeping handle 13, the connecting rod is hooked on the upper part of the sweeping plate and pushed, so that the sweeping plate is suspended from the bottom of the dust collecting cover because it is suspended from the inclined wall 15 and tilted. Can be returned with. The cushion 16 is a measure for preventing the sweep plate 11 from vibrating due to vibration during the traveling of the vehicle.

4. A barrier 17 installed on the inner wall of the cylinder at the end of the dust collection port 2 is for preventing fine particles circulating around the tube wall from being sent to the subsequent stage. The dust collector of FIG.
By removing the end cover 18, the brush rod 1
9, so that maintenance is easy. The brush is flexible and the barrier 17 does not hinder withdrawal.

5. The catalyst 8, the filter and the muffler are usually installed at this position. FIG. 3 is a cross-sectional view of the dust collector according to the present invention applied to an incinerator. The combustion gas 28 discharged from the exhaust pipe 20 is sucked into the cylinder 22 through the end cover 21 and becomes a rotational flow by the high-speed rotation of the brush 23. A collecting row 25 is set in the cylinder 22 at a collecting port 24 opened along the generatrix so that the collecting row 25 is slightly viewed in the pipe. The friction ring 27 installed on the brush rod 26 comes into contact with the collecting roll and transmits its rotation.
A non-slip 29 such as a knurl is provided on the outer periphery of the collection roll 25 that comes into contact with the rotating ring. The collecting roll 24 that rotates at the same peripheral speed as the brush takes in the attached fine particles and fly ash into the dust collecting dat 30, and wipes off the attached matter by the dust removing plate 31 that comes into contact with the roll.
Dust to zero.

6. When the exhaust port 36 is provided at right angles to the cylinder, exhausting by rotating the helical brush 35 instead of the propeller type like the fan 33 is also effective in terms of space and efficiency. Are better.

[0007]

The present invention has the following features. 1. Fine particles accumulated in the dust collecting cover can be easily discharged from the outside. 2. The rotation of the brush can be reliably transmitted to the collection roll, and the collection efficiency of the fine particles is improved.

[Brief description of the drawings]

 [Figure 1]

FIG. 1 is a cross-sectional view of a dust collector according to the present invention. [FIG. 2]
-I sectional drawing. FIG. 3 is a cross-sectional view of a dust collector applied to an incinerator. FIG. 4 is a sectional view taken along line LL. 1. Cylinder 2. 2. dust collection port 3. Brush rotation direction Motor 5. Brush 6 Exhaust stack 7. 7. dust collection cover Catalyst 9. Discharge port 10. Dust collection trap 11. Sweep plate 12. Connecting rod 13. 13. Sweep handle Support plate 15. Slope 16. Cushion 17. Barrier 18. End cover 19. Brush rod 20. Exhaust stack 21. End cover 22. Cylinder 23. Brush 24. Collection port 25. Collection roll 26. Brush rod 27. Friction ring 28. Combustion gas 29. Non-slip 30. Dust collection duct 31. Dust removing plate 32. Brush 33. Fan 34. Exhaust port 35. Spiral brush 36. Exhaust port 37. Tube wall end 38. Pressure sensor 39. valve

Claims (6)

[Claims] 1. A structure of a dust collection port 2 in which a pipe wall is opened along a generatrix of a cylinder 1 and the pipe wall of the opening is double overlapped with the upstream side of the rotating airflow outside. 2. An electric charge is removed from a tube wall end 37 outside the dust collection port 2. 3. A system according to claim 3, wherein a pressure sensor detects a decrease in pressure in the cylinder, and a valve disposed in front of the fan is opened to introduce outside air. 4. An inclined surface 15 is formed on the dust collecting cover 7, and a sweeping plate 11 sliding with the inclined surface as a guide is operated from outside the cover to collect and discharge the dust at a dust collecting outlet 9 formed at the end. A dust collecting cover structure characterized by the following. 5. A barrier 17 is provided on the inner periphery of the cylinder tube wall. 6. A collection port 24 formed in a bus of the cylinder 1.
Collection roll 2 with the roll surface slightly in the pipe
5 is installed. A friction ring 27 that contacts the collection roll and transmits the rotation of the brush is installed on the brush rod 26.
A collecting roll rotating mechanism having the above configuration.