CN112439264A

CN112439264A - Exhaust gas filtering device

Info

Publication number: CN112439264A
Application number: CN201910804306.5A
Authority: CN
Inventors: 陈邦和
Original assignee: Ding Peng Enterprise Co ltd
Current assignee: Ding Peng Enterprise Co ltd; Xpole Precision Tools Inc
Priority date: 2019-08-28
Filing date: 2019-08-28
Publication date: 2021-03-05

Abstract

The invention relates to an exhaust gas filtering device, which comprises a filtering chamber and a ventilating filtering body, wherein the filtering chamber comprises an air inlet and an air outlet, and the air inlet is connected with a dust filtering device and receives an air flow to be filtered flowing in from the dust filtering device. The air permeable filtering body is arranged in the filtering chamber and provided with a plurality of mountain parts arranged at intervals and a plurality of valley parts respectively arranged between any two adjacent mountain parts in the mountain parts on one side facing the air inlet, and the air permeable filtering body enables the air flow to be filtered to be divided into a first air flow which directly penetrates through the air permeable filtering body and flows to the air outlet and a second air flow which penetrates through the air permeable filtering body and flows to the air outlet after flowing along the surface of at least one of the mountain parts and the valley parts.

Description

Exhaust gas filtering device

Technical Field

The present invention relates to an exhaust filter, and more particularly to an exhaust filter implemented in conjunction with a dust filter.

Background

As disclosed in TW I409047, TW I637717, TW I637718 and CN102475523, the conventional dust collecting apparatus still filters the gas to be exhausted with a filter 50 at the end of dust filtration. However, as is clear from the foregoing description, the filter 50 used in the prior art embodiment is in the form of a flat plate, and the filter 50 is disposed directly in an exhaust chamber 51, as shown in fig. 9. As is clear from fig. 9, one side surface of the filter 50 directly faces an air inlet 511 of the exhaust chamber 51, and although a gas 60 is about to be exhausted through the exhaust chamber 51, the gas 60 still has a certain pressure, and the gas will pass through only a portion of the filter 50 directly facing the air inlet 511 without being guided by an external force, where the portion is indicated as a range 52 indicated in fig. 9. Thus, when the gas 60 contains fine dust that is not filtered, the portion of the filter 50 facing the gas inlet 511 will quickly accumulate fine dust and fail. However, it can be seen from the foregoing that the gas 60 only passes through the portion of the filter 50, so that the portion of the filter 50 through which the gas 60 does not pass is not effectively used, resulting in waste. Also, in the case of the above-mentioned construction, for example, for industrial dust collection, the time for the filter 50 to fail is greatly accelerated due to the large amount of fine dust.

Thus, although two solutions can solve the above problems, the two solutions still have the defect to be improved. Further, one of the two solutions is to increase the distance between the air inlet 511 and the filter 50 to a distance that the distance between the air inlet 511 and the filter 50 is greater than 1.6 times the length of the long side of the filter 50, but this solution will result in the volume of the exhaust chamber 51 being too large to meet the needs of many owners. In another of the two solutions, a flow guiding element 70 is disposed between the gas inlet 511 and the filter 50, as shown in fig. 10, the flow guiding element 70 generally has no characteristic of allowing gas to penetrate therethrough, although the flow guiding element 70 guides the gas 60, the position of the gas 60 passing through the filter 50 is actually changed, the guided gas 60 still only passes through a part of the filter 50, as shown in the

ranges

53 and 54 shown in fig. 10, and the problem that the filter 50 is easily densely packed in the part is still not solved. In addition, the arrangement of the flow guide 70 causes the structure of the exhaust chamber 51 to be more complicated, and a portion of the filter 50 is blocked by the flow guide 70 and is not used for filtering dust.

Furthermore, while the above-mentioned CN102475523A discloses a dust collecting device with a self-cleaning filter, the patent actually discloses a vibration cleaning structure to shake off the dust on the filter 50. This is only possible with materials where the filter 50 is vibratable and does not solve the problem of local build-up of dust.

Disclosure of Invention

The invention mainly aims to solve the problem that local dense dust accumulation is easy to occur on filtering equipment due to the fact that a structure is not provided with an air guide design.

To achieve the above objective, the present invention provides an exhaust filtering device, which comprises a filtering chamber and an air-permeable filtering body, wherein the filtering chamber comprises an air inlet and an air outlet, and the air inlet is connected to a dust filtering device and receives an air flow to be filtered from the dust filtering device. The air permeable filtering body is arranged in the filtering chamber and provided with a plurality of mountain parts arranged at intervals and a plurality of valley parts respectively arranged between any two adjacent mountain parts in the mountain parts on one side facing the air inlet, and the air permeable filtering body enables the air flow to be filtered to be divided into a first air flow which directly penetrates through the air permeable filtering body and flows to the air outlet and a second air flow which penetrates through the air permeable filtering body and flows to the air outlet after flowing along the surface of at least one of the mountain parts and the valley parts.

In one embodiment, the air inlet defines a projection range facing the air permeable filtering body, and a height of one of the mountain portions within the projection range is higher than a height of the mountain portion not within the projection range.

In one embodiment, the heights of the mountain parts are the same.

In one embodiment, the exhaust gas filtering device comprises a filter disposed on a side of the air-permeable filtering body facing the exhaust port. Further, the filtration efficiency of the filter is preferably 90% or more.

In one embodiment, the air permeable filtering body has a plurality of irregularly arranged holes.

In one embodiment, the mountain portions and the mountain portions are arranged in an MxN matrix, M is a sum of the mountain portions and the valley portions in a same row, N is a sum of the mountain portions and the valley portions in a same row, the mountain portions in any two adjacent rows are arranged in a staggered manner, and the mountain portions in any two adjacent rows are arranged in a staggered manner.

In one embodiment, each of the mountain portions and one of the valley portions adjacent to the mountain portion form a continuous curved surface based on a sinusoidal configuration.

In one embodiment, the peak portions are each a curved surface structure, and the valley portions are each formed by a plane of the air-permeable filtering body.

In one embodiment, the mountain portions are respectively an angular cone structure, and the valley portions are respectively a curved surface structure.

In one embodiment, the mountain portions are each an angular cone structure, the valley portions are each formed by a surface of the air-permeable filtering body, and a connection portion between each mountain portion and one of the valley portions adjacent to the mountain portion is an arc surface.

Through the implementation of the invention, compared with the prior art, the invention has the following characteristics: the air-permeable filtering body is provided with the mountain parts and the valley parts on one side facing the air inlet, so that when the airflow to be filtered flows to the air-permeable filtering body, the part of the airflow is directly penetrated, and the rest part of the airflow is guided by at least one of the mountain parts and the valley parts, so that when the airflow to be filtered penetrates through the air-permeable filtering body, the flowing range of the airflow to be filtered is not limited to a local area any more, but flows in a wider range, and the problem of local dense dust accumulation can be further avoided. In addition, when the air-permeable filtering body is matched with a filter for use, the air flow to be filtered flows to the filter in a larger flow range when penetrating through the air-permeable filtering body, so that all parts of the filter can receive the air-permeable filtering body to carry out filtering.

Drawings

Fig. 1 is a schematic structural view of a first embodiment of an exhaust gas filtering device according to the present invention.

Fig. 2 is a schematic structural view of a second embodiment of the exhaust gas filtering device of the present invention.

Fig. 3 is a schematic structural view of a third embodiment of the exhaust gas filtering device of the present invention.

Fig. 4 is a schematic structural view of a fourth embodiment of the exhaust gas filtering device according to the present invention.

Fig. 5 is a schematic top view of the structure of a fifth embodiment of an air-permeable filter body of the present invention.

Fig. 6 is a schematic structural view of a sixth embodiment of the exhaust gas filtering device according to the present invention.

Fig. 7 is a schematic view showing the first embodiment of the exhaust gas filtering apparatus according to the present invention.

Fig. 8 is a schematic view showing an embodiment of a seventh embodiment of the exhaust gas filtering apparatus according to the present invention.

Fig. 9 is an implementation schematic diagram (one) of the in-use structure.

Fig. 10 is an implementation schematic diagram (two) of the in-use structure.

The reference numbers are as follows:

.

141. 142

143. A

145. A

147. The

.

A

.

A

.

52. A 53, 54

.

Detailed Description

The present invention will be described in detail and technical contents with reference to the accompanying drawings, wherein:

referring to fig. 1 and 2, the present invention provides an exhaust gas filtering device 10, the exhaust gas filtering device 10 is implemented with a dust filter 20, and the dust filter 20 may be a cyclone dust filter. The exhaust gas filtering device 10 includes a filtering chamber 11 and a gas permeable filtering body 14 disposed in the filtering chamber 11, wherein the filtering chamber 11 includes an air inlet 12 and an air outlet 13. The exhaust port 13 can be directly connected to the external space or connected to an air exhausting device 30 according to the implementation situation. Also, the air permeable filtering body 14 has a plurality of irregularly arranged holes, for example, the air permeable filtering body 14 may be a sponge. The air permeable filtering body 14 has a first distance 151 and a second distance 152 with the air inlet 12 and the air outlet 13, respectively. In one embodiment, the first distance 151 is shorter than the length of the long side of the air permeable filter 14.

Referring to fig. 1 again, the air-permeable filtering body 14 is configured to be windward on a side facing the air inlet 12, and has a plurality of

peaks

141, 142 spaced apart from each other and a plurality of

valleys

143, 144 respectively disposed between any two adjacent peaks of the

peaks

141, 142. The

peaks

141, 142 and the

valleys

143, 144 are defined based on the surface of the air-permeable filter 14 facing the air inlet 12, and one of the peaks 141(142) and one of the valleys 143(144) can be defined as one of the relatively high points in the surface, and the other one of the relatively low points in the surface is not the highest point of the surface, and the other one of the relatively low points is not the lowest point of the surface. Further, embodiments of the

mountain portions

141, 142 and the valley portion 143 are illustrated. Referring to fig. 1 again, in an embodiment, the

peak portions

141 and 142 are respectively a curved surface, and the

valley portions

143 and 144 are respectively formed by a plane of the side of the air permeable filtering body 14 facing the air inlet 12. Further, as can be clearly understood from fig. 2, in the present embodiment, the plane forming the

trough portions

143, 144 is a relatively low point of the side of the air-permeable filtering body 14 facing the air inlet 12, and the curved surface structures forming the

trough portions

143, 144 respectively form a relatively high point of the side of the air-permeable filtering body 14 facing the air inlet 12. Referring to fig. 2 again, in an embodiment, each of the mountain portions 141(142) and one of the valley portions 143(144) adjacent to the mountain portions 141(142) form a continuous curved surface, and the continuous curved surface is based on a sinusoidal curve, that is, the

mountain portions

141, 142 and the

valley portions

143, 144 form a wave-like structure on the side of the air-permeable filtering body 14 facing the air inlet 12. In addition, referring to fig. 3, in an embodiment, the

peak portions

141 and 142 are respectively an angular cone structure, and the

valley portions

143 and 144 are respectively a curved surface structure. Referring to fig. 4, in an embodiment, the

mountain portions

141 and 142 are respectively an angular cone structure, the

valley portions

143 and 144 are respectively formed by a plane of the air-permeable filtering body 14, and a connection point 149 of each mountain portion 141 and one of the valley portions 143 adjacent to the mountain portion 141 is an arc surface.

Referring to fig. 1 and 5, in order to specifically depict the arrangement of the

peaks

141 and 142 and the

valleys

143 and 144 in the present embodiment, the

peaks

141 and 142 and the

valleys

143 and 144 are shown in fig. 5 according to whether color is filled or not, wherein in fig. 5, the non-color-filled portions are used as the

peaks

141 and 142, and the color-filled portions are used as the

valleys

143 and 144. Thus, as can be seen from the embodiment disclosed in fig. 5, the

mountain portions

141, 142 and the

valley portions

143, 144 are arranged in an MxN matrix, M is the sum of the

mountain portions

141, 142 and the

valley portions

143, 144 in the same row, N is the sum of the

mountain portions

141, 142 and the

valley portions

143, 144 in the same row, the

mountain portions

141, 142 of any two adjacent rows (e.g., 145, 146 indicated in fig. 5) are disposed in a staggered manner, and the

mountain portions

141, 142 of any two adjacent rows (e.g., 147, 148 indicated in fig. 5) are disposed in a staggered manner.

Referring to fig. 5 again, the air inlet 12 faces the air permeable filter 14 to define a projection area 121, the size of the projection area 121 depends on the aperture of the air inlet 12, and the projection area 121 may include a plurality of hills 141 and a plurality of valleys 143. Referring to fig. 6, in an embodiment, a height of one of the

mountain portions

141 and 142 located in the projection range 121 is higher than a height of one of the

mountain portions

141 and 142 not located in the projection range 121. In addition to the above, the heights of the

mountain portions

141 and 142 may be the same in the present invention, as illustrated in fig. 1 to 4. In addition, in an embodiment, an area of one of the

mountain portions

141, 142 on the air permeable filter 14 in the projection area 121 is larger than an area of the projection area 121.

From the above, referring to fig. 8, in the implementation of the present invention, the air inlet 12 receives an air flow 21 to be filtered flowing in from the dust filter 20, the air flow 21 to be filtered is a high pressure air flow, and the air flow 21 to be filtered can be generated by the dust filter 20 receiving a high pressure air and discharging the air after filtering dust, or generated by the air extracting device 30 extracting the air in the filtering chamber 11 to make the filtering chamber 11 form a negative pressure. In addition, although the air flow 21 to be filtered is filtered by the dust filter 20, it may still entrain the tiny dust that cannot be handled by the dust filter 20. From above, the air flow 21 to be filtered enters through the air inlet 12 and then directly flows to the side of the air permeable filtering body 14 where the plurality of the

mountain portions

141, 142 and the plurality of the

mountain portions

143, 144 are disposed. The air flow 21 to be filtered is separated into a first air flow 211 and a second air flow 212 by contacting the air permeable filter 14. Specifically, the first air flow 211 directly penetrates through the air-permeable filter 14 to flow to the air outlet 13, and the second air flow 212 flows along the surface of at least one of the

mountain portions

141, 142 and the

valley portions

143, 144 to penetrate through the air-permeable filter 14 to flow to the air outlet 13. The second air flow 212 can be referred to as a diffused air flow, and the high pressure air flow 21 to be filtered is in contact with one of the

mountain portions

141, 142, except for the portion forming the first air flow 211, and the rest portion is diffused toward the periphery along the surface of the air-permeable filtering body 14. Also, a flow range of the second air stream 212 on the air permeable filtering body 14 is larger than the projection range 121 of the air inlet 12 facing the air permeable filtering body 14. In this way, the air flow 21 to be filtered through the air-permeable filtering body 14 flows in a wide range. That is, the air flow 21 to be filtered no longer has only a portion of the air-permeable filtering body 14 penetrating therethrough, but rather penetrates more evenly from all places of the air-permeable filtering body 14, so that the fine dust entrained by the air flow 21 to be filtered is no longer filtered by only the portion of the air-permeable filtering body 14 corresponding to the projection range 121. In addition, the flow range of the second air stream 212 is determined by the air pressure intensity of the air stream 21 to be filtered or the length of the first gap 151 between the air permeable filtering body 14 and the air inlet 12.

Referring to fig. 8, in one embodiment, the exhaust gas filtering device 10 includes a filter 16 disposed on a side of the air-permeable filtering body 14 facing the exhaust port 13. The filter 16 is a High-Efficiency Particulate Air (HEPA) filter, and the filter 16 has a filtering Efficiency of 90% or more, and the filter 16 may be implemented, for example, in a class of E11, E12, H13, H14, U15, U16, or U17. In view of the above, in the implementation of the present embodiment, the side surface of the filter 16 facing the air-permeable filter 14 receives the first air flow 211 and the second air flow 212 not at a single point, but receives the first air flow 211 and the second air flow 212 with an area slightly equal to the flow range of the second air flow 212 on the air-permeable filter 14. Therefore, the problem that the filter 16 is rapidly disabled due to the dust concentration at a certain position of the filter 16 caused by the over concentration of the air flow passing through the filter 16 can be reduced.

Claims

1. An exhaust gas filtering device, comprising:

the filter chamber comprises an air inlet and an air outlet, wherein the air inlet is connected with a dust filter and receives an air flow to be filtered from the dust filter; and

the air-permeable filtering body is arranged in the filtering cavity and provided with a plurality of mountain parts arranged at intervals and a plurality of valley parts respectively arranged between any two adjacent mountain parts in the mountain parts on one side facing the air inlet, and the air-permeable filtering body enables the airflow to be filtered to be divided into a first airflow which directly penetrates through the air-permeable filtering body and flows to the air outlet and a second airflow which flows along at least one surface of the mountain parts and the valley parts and then penetrates through the air-permeable filtering body and flows to the air outlet.

2. The exhaust gas filtering device according to claim 1, wherein the air inlet defines a projection range facing the air permeable filtering body, and a height of one of the mountain portions located within the projection range is higher than a height of the mountain portion not located within the projection range.

3. The exhaust gas filtering device according to claim 1, wherein the heights of the mountain portions are the same.

4. An exhaust gas filtering device according to claim 1, 2 or 3, wherein said exhaust gas filtering device comprises a filter provided on a side of said air-permeable filtering body facing said exhaust port.

5. The exhaust gas filtering device according to claim 4, wherein the filter has a filtering efficiency of 90% or more.

6. The exhaust gas filtering device according to claim 4, wherein the air-permeable filtering body has a plurality of irregularly arranged holes.

7. The exhaust gas filtering device according to claim 4, wherein said peaks and said valleys are arranged in an MxN matrix, M is a sum of said peaks and said valleys in a same row, N is a sum of said peaks and said valleys in a same row, said peaks in any two adjacent rows are staggered, and said peaks in any two adjacent rows are staggered.

8. The exhaust gas filter device according to claim 7, wherein each of said peaks and one of said valleys adjacent to said peak form a continuous curved surface based on a sinusoidal configuration.

9. The exhaust gas filtering device according to claim 7, wherein said peak portions are each a curved surface structure, and said valley portions are each formed by a plane of said air-permeable filtering body.

10. The exhaust gas filter device according to claim 4, wherein each of said peaks and one of said valleys adjacent to said peak form a continuous curved surface based on a sinusoidal configuration.

11. The exhaust gas filtering device according to claim 4, wherein said peak portions are each a curved surface structure, and said valley portions are each formed by a plane of said air-permeable filtering body.

12. The exhaust gas filtering device according to claim 1, 2 or 3, wherein said peaks and said valleys are arranged in an MxN matrix, M is a sum of said peaks and said valleys in a same row, N is a sum of said peaks and said valleys in a same row, said peaks in any two adjacent rows are staggered, and said peaks in any two adjacent rows are staggered.

13. The exhaust gas filtering device according to claim 1, 2 or 3, wherein each of said mountain portions and one of said valley portions adjacent to said mountain portion constitute a continuous curved surface based on a sinusoidal configuration.

14. An exhaust gas filter device according to claim 1, 2 or 3, wherein each of said mountain portions has a curved surface structure, and each of said valley portions is formed by a flat surface of said air-permeable filter body.

15. The exhaust gas filtering device according to claim 1, 2 or 3, wherein said peak portions are each an angular cone structure, and said valley portions are each a curved surface structure.

16. The exhaust gas filtering device according to claim 1, 2 or 3, wherein each of the mountain portions has an angular cone structure, each of the valley portions is formed by a surface of the gas permeable filtering body, and a junction between each of the mountain portions and one of the valley portions adjacent to the mountain portion is an arc surface.

17. An exhaust gas filtering device according to claim 1, 2 or 3, wherein said air-permeable filtering body has a plurality of irregularly arranged holes.