KR0139077Y1 - Apparatus for purifying exhaust gas - Google Patents

Abstract

The present invention provides an exhaust gas purifying apparatus having a filter support plate having a structure that improves the filtration and cleaning operations and prevents heat deformation or wear due to rotation of the filter.

The filter support plate of the exhaust gas purifier has an inner and an outer filter support portion that supports the filter only at both ends of the inner and outer sides in the radial direction, and at the middle portion thereof, the process gas space portion is formed so as to filter the process gas over the entire surface. The outer filter support portion is characterized in that the rotation is guided by the flange while forming an oil film space portion between the flange of the divided inner housing.

Accordingly, it is possible to further improve the filtration and cleaning action, to prevent heat deformation or abrasion due to the rotation of the filter, to improve durability, and to ensure long-term smooth operation even in a bad situation. Has the effect of.

Description

Exhaust gas purification device

FIG. 1A is an axial lateral cross-sectional view of the exhaust gas purifying apparatus, and FIG. 1B is a line A-A sectional view of FIG. 1A.

FIG. 2A is an axial longitudinal cross sectional view of FIG. 1A and FIG. 2B is a line B-B sectional view of FIG. 2A.

3 is an external view showing a state where the exhaust gas purifying apparatus according to the embodiments of FIGS. 1 and 2 is installed in a horizontal direction.

4 is an operating circuit diagram of an exhaust gas purification device and a peripheral device.

5 is a partial cross-sectional view showing a state in which the brush support plate of the porous, thin plate is installed.

6 is a partial cross-sectional view showing the structure of the brush support plate and the inner housing according to the first embodiment of the present invention.

Figure 7a is a partial cross-sectional view showing the structure of the brush support plate and the inner housing according to the second embodiment of the present invention, Figure 7b is a line 7-7 cross section of Figure 7a.

Figure 8a is a partial cross-sectional view showing the structure of the brush support plate and the inner housing according to the third embodiment of the present invention, Figure 8b is a cross-sectional view line 8-8 of Figure 8a.

9 is a partial cross-sectional view showing the structure of the brush support plate and the inner housing according to the fourth embodiment of the present invention.

* Explanation of symbols for main parts in the drawings

1: Process gas chamber 1a, 2a: (split) external housing

2: clean gas room 3: crevice (collection room)

4: brush (filter) 5, 6: fixing means (separator)

7: gas supply pipe 8,10: distributor

8a: process gas inlet 9: gas discharge pipe

10a: clean gas outlet 11: upper cover

12: lower cover 13,13 ': spray means (nozzle)

13a: washing liquid inlet 13b: washing liquid outlet

14: driving pulley 15: rotating shaft

16: internal bearing 17: (divided) internal housing

18: Retainer 19: Outer Bearing

20: drain pipe 21: cooling liquid inlet

22: Cooling liquid outlet 23: External housing assembly bolt

24: drive motor 25: exhaust fan

26: drain tank 27: cleaning liquid filtration filter

28: washing liquid pump 29: washing liquid cooler

30: replenishment liquid tank 31: replenishment liquid inlet pipe

32: replenishment liquid transfer pipe 33: cleaning liquid transfer pipe

34: coolant supply pipe 35: coolant discharge pipe

36: drain pipe 17 ': flange

17 '', 48: 44 '' projection: inner filter support

44: brush (filter) support plate (this invention) 45: processing gas space part

46: opening 47: outer filter support

17a, 49: combined flange 49 ': blade flange

50: oil film space 51,52: bushing

The present invention is a device for removing particulates or mists (hereinafter referred to as foreign substances) including exhaust gases such as internal combustion engines (especially diesel engines), boilers, and incinerators, as well as harmful gases and dusts generated in environmental pollution places such as subways. More specifically, the exhaust gas having a filter support plate of the structure to improve the filtration and cleaning action of the filter rotating between the process gas chamber and the clean gas chamber, and to prevent thermal deformation or wear caused by the rotation of the filter It relates to a purification device.

In general, gases or air containing foreign substances generated in various engines, manufacturing processes, environmental pollution places, etc. have a heat and / or viscosity and was not easy to remove them. Due to these characteristics, there was a limit to the selection of gas purifier and dust collector, and the cyclone dust collector using the centrifugal force cannot be expected to have high efficiency among the conventional methods, and the scrubber which is a cleaning dust collector has a limitation in the amount of processing gas and operates There is a costly disadvantage. In addition, the electrostatic precipitating method using static electricity does not have a constant efficiency depending on the operating time, and there are excessive disadvantages in operating costs.

In this regard, the present applicant performs filtration by direct filtration instead of indirect filtration, and employs a continuous operation method in which filtration and regeneration (cleaning) of a filter medium such as (sub) woven fabric or brush are adopted at the same time. A novel exhaust gas purifier, which maintains its function and its sustainability, has been developed and filed under patent application No. 96-14712 (filed May 6, 1996). 4 is shown.

In FIGS. 1a, b and 2a, b, the gas supply pipe 7 is installed through the divided outer housings 1a and 2a and the divided inner housing 17 of the process gas chamber 1, and includes a plurality of gas supply pipes ( The distributor 8 is mounted to communicate 7) with each other, and the gas discharge pipe 9 is installed through the divided external housing 2a and the divided internal housing 17 of the clean gas chamber 2 and has a plurality of gas discharge pipes. The distributor 10 is attached so that 9 can be connected.

The rotating shaft 15 is installed through the centers of the upper and lower carbers 11 and 12, and the inner bearing 16 may be installed at regular intervals to prevent vibration and thermal deformation of the rotating shaft 15. The inner bearing 16 is circulated by a coolant passage 23 formed in the center of the separator 5 as a fixing means by water cooling. The circular brush 4 is fixed to the rotary shaft 15 as a filter at fixed intervals, and the split inner housing 17 has a flange 17 'facing outward so that the circumferential portion of the brush 4 is inserted and guided. 6 and the front and rear of the brush 4, the process gas chamber 1, the clean gas chamber 2, and the collection chamber 3 are respectively blocked. The nozzle 13, which is a spraying means, is installed to penetrate the outer housing 1a and the inner housing 17 of the process gas chamber portion and to be supported by the inner bearing 16, and the nozzle 13 is directed to the front and rear brushes 4. It is. Separators 5 and 6 as fixing means are provided to maintain the gap for the collection chamber 3 and to support the internal bearing 16 between each of the divided outer housings 1a and 2a and the divided inner housing 17. It is installed.

In FIG. 3, the drain pipe 20 is installed at the lower portion of the outer housings 1a and 2a to be connected to the drain tank 26, and the contaminated cleaning liquid is discharged to the drain tank 26. Retainer 18 and outer bearing 19 are installed in front and rear of rotating shaft 15 penetrating the center of upper and lower cover 11 and 12, respectively, and drive pulley 14 and drive motor 24 or engine. It is connected to and driven. A plurality of divided outer housings (1a, 2a) is assembled and fixed by the housing assembly bolt 23, such a split structure is the number of process gas chamber (1), clean gas chamber (2) and brush (4) the amount of process gas It can be increased or decreased depending on.

When cooling of the inner bearing 16 is required, a plurality of nozzles, which are spraying means as shown in FIG. 9, are provided with a coolant supply pipe 34 and a coolant discharge pipe 35 connected to the cleaning liquid transport pipe 33 in FIG. 13 'may be formed in a desired angle and shape on the outer circumference of the bearing, in communication with the in-water cooling liquid flow path 16' around the inner bearing 16. As shown in FIG.

FIG. 4 is provided with a drain tank 26 to recover the contaminated cleaning liquid discharged through the drain pipe 20. The contaminated cleaning liquid is filtered and, when heated, is cooled and recycled. ), Washing liquid discharge pipe 36, washing liquid filtration filter 27, washing liquid pump 28, washing liquid cooler 29, and in the case of fixed type, supplement liquid tank 30, supplement liquid inlet pipe 31, the replenishment liquid transfer pipe 32, the drain discharge pipe 36 may be connected to the drain tank 26, and in the case of a mobile, such as a vehicle, the replenishment liquid inlet or washing liquid inlet 32 'and the drain in the drain tank 26 An outlet 36 'may be provided.

In addition, FIG. 5 shows a configuration in which the brush support plates 4 'of the porous and thin plates, which are formed narrower in the circumferential direction, are installed on both sides of the filter, thereby preventing the filter from sagging and providing a uniform filter, that is, a brush. The filter can be rotated smoothly while maintaining the wire density.

However, the brush 4 that rotates in FIG. 5 causes friction between both flanges of the adjacent divided inner housing 17 due to the rotation thereof, so that the brush 4 is not only thermally deformed or worn or cut off, but also with the flanges. Since the cleaning liquid does not form an oil film therebetween and thus the airtightness is not maintained, at least a part of the processing gas from the processing gas chamber 1 is introduced into the clean gas chamber 2 through the flange without being filtered. Filtration efficiency will fall.

In addition, although the pores are formed in the brush support plate 4 ', the process gas cannot contact the brush 4 at the portion where the pores are not formed, and thus the efficiency of the filtration action is reduced compared to the size of the brush.

The present invention is to solve the above-mentioned problems, and to improve the filtration and cleaning action of the filter that rotates between the process gas chamber and the clean gas chamber, and to prevent the thermal deformation or wear caused by the rotation of the filter It is an object to provide an exhaust gas purification device having a filter support plate.

In order to achieve this object, the exhaust gas purifying apparatus according to the present invention is provided with a processing gas chamber into which the exhaust gas is introduced and a clean gas chamber for discharging the clean gas therein, and having a section composed of the processing gas chamber and the clean gas chamber. In order to facilitate the increase and decrease, the process gas chamber and the clean gas chamber are respectively separated correspondingly, and a plurality of flanges are formed outwardly at both ends, and each of which is fixed by fixing means with a gap for radially discharging foreign matter from the flange. Split internal housing; A rotating shaft rotatably installed in the center of the inner housing; One end is fixed to the rotary shaft and the other end is guided by the opening part of the inner housing and rotates with the rotary shaft, adsorbing or filtering foreign matter in the exhaust gas passing from the processing gas chamber to the clean gas chamber, passing through the clean gas, and together with the shaft A circular filter for discharging the adsorbed or filtered foreign matter by the rotating centrifugal force to the outside of the inner housing through the gap between the flanges of the inner housing; An outer housing provided with a clearance in the circumferential direction to form a collection chamber in the gap, and collecting and removing foreign matter into the collection chamber by the centrifugal force of the filter; In the exhaust gas purifying apparatus having a porous, thin filter support plate formed on both sides of the filter in the circumferential direction in order to smoothly rotate the filter while preventing sagging of the filter and maintaining a uniform filter density. The filter support plate has an inner and outer filter support portion that supports the filter only at both ends of the inner and outer sides in the radial direction, and at the middle portion thereof, a process gas space portion is formed to filter the process gas over the entire surface, and the outer filter support portion Rotation is guided by the flange while forming an oil film space between the flange of the divided inner housing.

Hereinafter, with reference to the accompanying drawings, embodiments of the present invention, as follows.

6 is a partial cross-sectional view of the structure of the brush (filter) support plate and the inner housing according to the first embodiment of the present invention similarly to FIG.

The brush support plate 44 has inner and outer filter support portions 44 'and 47 which support the filter only at both ends of the inner and outer sides in the radial direction, and at the middle portion thereof, the brush to filter the process gas over the entire surface. A process gas space part 45 in which 4) is entirely exposed is formed. The inner and outer filter support portions 44 and 47 and the processing gas space portion 45 can be easily formed by simply pressing forming or the like.

In addition, the outer filter support portion 47 forms the oil film space portion 50 between the flange 17 'of the divided inner housing 17 and rotates the brush 4 by the flange 17'. You are guided.

By such a configuration, the processing gas passes through the brush 4 through the brush 4 in the processing gas space part 45, thereby improving the efficiency, and the outer brush support 47 is formed. Since the brush 4 is rotated by being guided to the divided internal housing 17, it is possible to prevent cutting, heat deformation, or abrasion due to the rotation of the brush 4.

Also. The projections 17 ″ and 48 are respectively provided on the flange 17 ′ of the divided inner housing 17 and the outer brush support 47 of the brush support plate 44 so as to maintain the oil film in the oil film space 50. It is formed over the entire circumference. The projections 17 '' and 48 are held in the oil film space 50 to form a cleaning liquid or a separate lubricant forming the oil film in the oil film space 50 so that the rotation can be smoothed and the airtightness can be maintained. By preventing at least a portion of the process gas from the process gas chamber 1 from passing through unfiltered, the filtration efficiency is not only improved, but also the strength of the brush support plate 44 and the divided internal housing 17. It is to increase the further to prevent thermal deformation.

7a is a partial cross-sectional view showing the structure of the brush support plate and the inner housing according to the second embodiment of the present invention, Figure 7b is a cross-sectional view 7-7 line 7-7. In the second embodiment, the flange 17 'and the filter support plate 44 of the divided inner housings are coupled so as to couple the adjacent pair of divided inner housings 17 and 17 and the pair of filter support plates 44 and 44, respectively. A plurality of coupling flanges 17a and 49 are formed respectively extending radially outward and separated from each other in the circumferential direction. Accordingly, a pair of adjacent divided inner housings 17 and 17 and a pair of filter support plates 44 and 44 are respectively coupled without a separate fixing means (separators 5 and 6 in FIGS. 1 to 4). It becomes possible.

FIG. 8A is a partial cross-sectional view showing the structure of the brush support plate and the inner housing according to the third embodiment of the present invention, and FIG. 8B is a cross-sectional view taken along the line 8-8 of FIG. 8A. In this embodiment, the plurality of coupling flanges 17a and 49 have blade flanges so as to prevent inflow of the processing gas and the cleaning liquid into the clean gas chamber 2 and to maintain the oil film of the oil film space part 50 in an airtight state. 49 ') are formed integrally with each other. The blade flange 49 'generates a pressure difference before and after the flow, thereby preventing the inflow of the processing gas and the cleaning liquid into the clean gas chamber 2, and the oil film in the oil film space 50 is kept airtight. .

9 is a partial cross-sectional view showing the structure of the brush support plate and the inner housing according to the fourth embodiment of the present invention. In this embodiment, a bushing 51 for guiding rotation from the oil film space part 50 to the flange 17 'of the divided inner housing 17 and the outer filter support plate 44 of the filter support plate 44. 52) is installed. The bushings 51 and 52 guide the rotation of the brush support plate 44 smoothly, reduce wear on the brush support plate 44, and can be easily replaced as necessary, thereby simplifying maintenance. The bushings 51 and 52 can be easily installed by simply press-fitting the brush support plate 44 or the flange 17 'portion of the divided inner housing 17 as shown. In addition, instead of the bushings 51 and 52, hard chromium plating may be formed on the brush support plate 44 or the flange 17 'portion of the divided inner housing 17 to lubricate.

According to the configuration and action according to the embodiments of the present invention, the filtration action is performed by direct filtration method, the continuous operation method that the filtration action and the regeneration (washing) of the filter medium such as (sub) woven or brush at the same time It can further improve the filtration and cleaning action, prevent heat deformation or abrasion due to the rotation of the filter, further improve the durability, and ensure long-term smooth operation even under poor conditions. Has the effect of.

Claims (5)

The process gas chamber 1 into which the exhaust gas flows in and the clean gas chamber 2 for discharging the clean gas are provided therein to facilitate the increase and decrease of the section composed of the process gas chamber 1 and the clean gas chamber 2. In order to separate the process gas chamber (1) and the clean gas chamber (2), respectively, the flange 17 'is formed at both ends to the outside, and the clearance for discharging the foreign matter in the radial direction from the flange (17'), respectively. A plurality of divided internal housings 17 fixed by the fixing means; A rotating shaft 15 rotatably installed in the center of the inner housing; One end is fixed to the rotary shaft and the other end is guided by the opening part of the inner housing and rotates with the rotary shaft, adsorbing or filtering foreign matter in the exhaust gas passing from the processing gas chamber to the clean gas chamber, passing through the clean gas, and together with the shaft A circular filter (4) for discharging the adsorbed or filtered foreign matter by the rotating centrifugal force to the outside of the inner housing through the gap between the flanges of the inner housing; An outer housing (1a) (2a) formed with a gap in the circumferential direction with the inner housing to form a collecting chamber (3) in the gap, and collecting and removing foreign matter into the collecting chamber by the centrifugal force of the filter; And in the exhaust gas purifier having a porous, thin filter support plate is formed on both sides of the filter narrower in the circumferential direction in order to smoothly rotate the filter while preventing the sag of the filter and maintain a uniform filter density, The filter support plate has inner and outer filter support portions 44 'and 47 which support the filter only at both ends of the inner and outer sides in the radial direction, and at the middle portion thereof, the process gas space portion to filter the process gas over the entire surface thereof. 45 is formed, and the outer filter support 47 is guided by the flange 17 'with the oil film space 50 formed between the flange 17' of the divided inner housing 17. Exhaust gas purifier, characterized in that. 2. The projections 17 according to claim 1, wherein the flanges 17 'of the divided inner housings 17 and the outer filter support portions 47 of the filter support plate 44 are respectively provided to hold the oil film in the oil film space portion 50. '', 48) exhaust gas purification apparatus characterized in that formed. The flange 17 'and the filter support plate 44 of the divided inner housings according to claim 1, for coupling adjacent pairs of divided inner housings 17 and 17 and pairs of filter support plates 44 and 44, respectively. And a plurality of coupling flanges (17a, 49) each extending radially outward and separated from each other in the circumferential direction. 4. The blade flanges of claim 3, wherein the process gas and the cleaning liquid are prevented from flowing into the clean gas chamber, and the oil film of the oil film space part 50 is kept airtight. 49 ') each formed integrally with the exhaust gas purifying apparatus. 5. The oil filter space of claim 1, wherein the flange 17 ′ of the divided inner housing 17 and the outer filter support plate 44 of the filter support plate 44. Exhaust gas purifier, characterized in that the bushing (51, 52) for guiding the rotation is installed.