Flue tail end tiny dust collecting device

Abstract

The utility model discloses a dust collection device at the tail end of a flue, and solves the problem that the content of dust in flue gas discharged by the flue is obviously increased when a dust collection device at the front end of the existing flue is used for removing dust. The utility model provides a flue tail end mote trapping device, which is installed at the tail end of a flue and used for trapping mote in flue gas at the tail end of the flue, the mote trapping device comprises a dust collection assembly intercepted in the flue, the dust collection assembly comprises a frame and a plurality of dust collection plates, the plurality of dust collection plates are sequentially fixed on the frame at intervals, and the dust collection plates are arranged on the frame. An included angle is formed between the dust collection plate and the smoke exhaust direction of the flue, a plurality of through holes and a plurality of spoilers are arranged on the dust collection plate, and the spoilers protrude from one ends of the through holes in the direction away from the dust collection plate to interfere flowing of part of smoke so as to generate vortex. According to the flue tail end tiny dust collecting device, tiny dust can be more easily gathered into large-particle tiny dust clusters by generating vortex, and therefore the tiny dust can be more easily collected by the dust collecting plate.

Description

Technical Field

[0001] The utility model relates to the technical field of dust removal equipment, in particular to a dust collecting device at the tail end of a flue. Background Art

[0002] In the prior art, a dust removal device is provided at the front end of the flue so that most of the fine dust in the flue gas can be captured by the dust removal device, thereby reducing the pollution of the flue gas to the environment. After the dust removal device has been used for a period of time, a large amount of dust will accumulate, which will lead to a decrease in the dust collection capacity, so it is necessary to remove the dust regularly.

[0003] At present, mechanical methods such as knocking and vibrating are generally used to shake off the accumulated dust on the dust removal device. Since the unit that generates flue gas is usually shut down only for overhaul, the dust removal device usually needs to be deashed while the unit is exhausting smoke. The deashing process will cause secondary dust, which will enter the flue and be discharged to the tail end of the flue, resulting in an increase in the dust content in the flue gas at the tail end of the flue. However, there are usually only a small number of maze-type trough-shaped dust collecting plates at the tail end of the flue, which cannot collect the dust generated by the secondary dust very well, resulting in a significant increase in the dust content in the flue gas discharged from the flue when the dust removal device at the front end of the flue is deashed. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and propose a dust collecting device at the tail end of a flue to solve the problem that the dust content in the flue gas discharged from the flue increases significantly when the dust removal device at the front end of the flue removes dust.

[0005] In order to achieve the above technical objectives, the utility model proposes a dust collection device at the tail end of a flue, which is installed at the tail end of the flue and is used to collect dust in the smoke at the tail end of the flue. The dust collection device includes a dust collecting component intercepted in the flue, and the dust collecting component includes a frame and a plurality of dust collecting plates. The plurality of dust collecting plates are fixed on the frame in sequence and at intervals. The dust collecting plates have an angle with the direction of smoke exhaust from the flue. The dust collecting plates are provided with a plurality of through holes and some spoiler sheets. The spoiler sheets protrude from one end of the through hole in a direction away from the dust collecting plate to interfere with the flow of part of the smoke and thus generate a vortex.

[0006] Preferably, the through holes are arranged in a plurality of rows in the vertical direction of the dust collecting plate, and the spoilers are correspondingly arranged in a plurality of rows, and the protrusion directions of two adjacent spoilers in the same row are opposite.

[0007] Preferably, two adjacent rows of through holes are staggered.

[0008] Preferably, the dust collecting assembly comprises an air inlet side and an air outlet side, and the spoiler is arranged on a side of the through hole close to the air outlet side; or,

[0009] The spoiler is arranged at one end of the through hole close to the air inlet side; or,

[0010] Part of the spoiler is arranged on a side of the through hole close to the air outlet side, and the other part of the spoiler is arranged on an end of the through hole close to the air inlet side.

[0011] Preferably, the through hole and the spoiler are integrally formed on the dust collecting plate by stamping.

[0012] Preferably, the spoiler includes a fixed end and a free end, the fixed end is fixed to the dust collecting plate, the free end gradually extends from the fixed end in a direction away from the dust collecting plate, and the width of the spoiler gradually decreases in the direction from the fixed end to the free end.

[0013] Preferably, the dust collecting plate comprises a first dust collecting plate portion and a second dust collecting plate portion which are arranged in sequence along the flue gas direction, and the first dust collecting plate portion and the second dust collecting plate portion are arranged in opposite directions so that the dust collecting plate is V-shaped.

[0014] Preferably, the first dust collecting plate portion is connected to the second dust collecting plate portion, and the dust collecting plate is bent and integrally formed into a V-shape.

[0015] Preferably, the plurality of dust collecting plates include a plurality of dust collecting plates installed on the left side of the frame and a plurality of dust collecting plates installed on the right side of the frame, and the dust collecting plates on the left and right sides are mirror-imaged.

[0016] Preferably, the fine dust collection device also includes a vibrating device, a limiting bracket is installed at the tail end of the flue, the limiting bracket is arranged on the left and right sides of the tail end of the flue, the frame slides up and down along the limiting bracket, the vibrating device includes a bracket, a reciprocating motor and a vibrating beam, the reciprocating motor is installed on the wall of the flue through the bracket, the vibrating beam is fixedly connected to the output shaft of the reciprocating motor, the dust collecting assembly is fixed on the vibrating beam, and the reciprocating motor drives the dust collecting assembly to move to shake off the dust captured thereon.

[0017] After adopting the above technical solution, the utility model has the following beneficial effects.

[0018] 1. The utility model proposes a dust collection device at the tail end of a flue, which is installed at the tail end of the flue and is used to collect dust in the flue gas at the tail end of the flue. The dust collection device includes a dust collection assembly intercepted in the flue, and the dust collection assembly includes a plurality of dust collection plates and a frame. The plurality of dust collection plates are fixed on the frame in sequence and at intervals. The dust collection plates have an angle with the direction of smoke exhaust from the flue. The dust collection plates are provided with a plurality of through holes and some spoiler plates. The spoiler plates protrude from one end of the through hole in the direction away from the dust collection plate to interfere with the flow of part of the smoke and generate vortexes. With such an arrangement, a flue gas flow passage is formed between two adjacent dust collection plates, and a flue gas flow passage is also formed between the dust collection plate at the edge of the dust collection assembly and the flue wall. The flue gas is blocked by the spoiler during its flow, thereby generating vortices in the flue gas flow duct. At the same time, due to the presence of the through holes, the flue gas between two adjacent flue gas flow ducts can flow in series, and the series flow of smoke makes the flow direction of the smoke in the smoke flow duct more complicated. In addition, the edges of the through holes also block the flue gas flow velocity, further increasing the complexity of the smoke flow, thereby generating more vortices. The vortices make it easier for the dust in the flue gas to aggregate into larger dust clusters, which are more easily captured by the dust collecting plate. Furthermore, since the dust collecting plate has an angle with the direction of smoke exhaust from the flue, the dust collecting area of ​​the dust collecting plate is increased within a limited length, further improving the dust collecting effect of the dust collecting plate, so that the secondary dust generated by the dust removal device at the front end of the flue can be better captured by the dust collecting component at the tail end of the flue, thereby better reducing the dust content in the flue gas discharged from the flue.

[0019] 2. The through holes are arranged in multiple rows in the vertical direction of the dust collecting plate, and the spoilers are arranged in multiple rows accordingly, and the protrusion directions of two adjacent spoilers in the same row are opposite. With such arrangement, on the one hand, there are spoilers on both sides of the dust collecting plate, and the flue gas will form vortices when passing through both sides of the dust collecting plate, thereby increasing the probability that the dust in the flue gas on both sides of the dust collecting plate will aggregate into large-particle dust groups; on the other hand, the staggered arrangement of the spoilers makes the formed vortex have a longer distance with the next spoiler, and the vortex carrying large-particle dust groups is more likely to contact the dust collecting plate, and the dust collecting plate is more likely to capture large-particle dust groups, thereby improving the dust collecting effect of the dust collecting plate and better reducing the dust content in the flue gas discharged from the flue.

[0020] 3. Two adjacent rows of through holes are arranged in a staggered manner. With this arrangement, flue gases at different heights produce different flow channel phenomena, so that the two adjacent flue gases affect each other, thereby generating more eddies, thereby further increasing the probability of large particle dust clusters forming, further improving the dust collection effect of the dust collecting plate, and better reducing the dust content in the flue gas discharged from the flue.

[0021] 4. The dust collecting component includes an air inlet side and an air outlet side, and the spoiler is arranged on the side of the through hole close to the air outlet side. In this arrangement, the smoke is blocked and guided by the spoiler, making it easier for the smoke to flow into the adjacent smoke flow channel, thereby further increasing the complexity of the smoke flow in the smoke flow channel, making it easier to generate more vortices, further increasing the probability of forming large-particle dust clusters, and further improving the dust collecting effect of the dust collecting plate. Or, the spoiler is arranged at one end of the through hole close to the air inlet side. In this arrangement, the smoke on both sides of the smoke flow channel close to different dust collecting plates is blocked and guided by the spoiler, and the smoke on both sides of the smoke flow channel is more easily guided to the central area of ​​the smoke flow, and then combined with the smoke flowing from the adjacent smoke flow channel, thereby further increasing the complexity of the smoke flow in the smoke flow channel, making it easier to generate more vortices, further increasing the probability of forming large-particle dust clusters, and further improving the dust collecting effect of the dust collecting plate. Or, some spoilers are arranged on the side of the through hole close to the air outlet side, and other spoilers are arranged on the end of the through hole close to the air inlet side. With this arrangement, the smoke flow ducts in different areas of the smoke flow duct have different movement trends, thereby further increasing the complexity of the smoke flow in the smoke flow duct, making it easier to generate more vortices, further increasing the probability of formation of large-particle dust clusters, and further improving the dust collecting effect of the dust collecting plate, thereby better reducing the dust content in the smoke discharged from the flue.

[0022] 5. The through hole and the spoiler are stamped and formed integrally on the dust collecting plate. With this arrangement, the processing of the dust collecting plate is simpler, the cost of the dust collecting component is lower, and the economic benefit is higher.

[0023] 6. The spoiler includes a fixed end and a free end. The fixed end is fixed to the dust collecting plate. The free end gradually extends from the fixed end in a direction away from the dust collecting plate. The width of the spoiler gradually decreases in the direction from the fixed end to the free end. With such a configuration, on the one hand, since the width of the spoiler is different at different positions, the blocking effect of the spoiler on the smoke at different positions is different, so that the vortex has a more complex rotation direction, which is more conducive to the mutual collision and superposition between different vortices; on the other hand, the shape of the spoiler is easier to form through a stamping process, and the stamping mold cost is lower, which further simplifies the processing of the dust collecting plate and reduces the cost of the dust collecting component.

[0024] 7. The dust collecting plate includes a first dust collecting plate portion and a second dust collecting plate portion arranged in sequence along the direction of the flue gas, and the first dust collecting plate portion and the second dust collecting plate portion are arranged in opposite directions so that the dust collecting plate is V-shaped. With such arrangement, a V-shaped flue gas flow passage is formed between two adjacent dust collecting plates, and the flue gas changes direction during the flow passage. This change in direction further increases the complexity of the flue gas flow, further increases the probability of the formation of large-particle dust clusters, and further improves the dust collecting effect of the dust collecting plate, and better reduces the dust content in the flue gas discharged from the flue; at the same time, the V-shaped dust collecting plate makes a single dust collecting plate occupy a smaller space, improves the compactness of the dust collecting assembly; and avoids the need to set up additional small-sized dust collecting plates on both sides of the dust collecting assembly due to insufficient space, thereby further reducing the cost of the dust collecting assembly.

[0025] 8. The first dust collecting plate portion and the second dust collecting plate portion are connected, and the dust collecting plate is bent and formed into a V shape. With such a configuration, the dust collecting plate can be bent and formed by a bending machine, avoiding the need for the first dust collecting plate portion and the second dust collecting plate to be welded to each other or fixed mechanically, thereby reducing the cost of the dust collecting plate and the dust collecting assembly.

[0026] 9. The dust collecting plates include the dust collecting plates installed on the left side of the frame and the dust collecting plates installed on the right side of the frame, and the dust collecting plates on the left and right sides are arranged in a mirror image. Such an arrangement can make the resistance of smoke flow on both sides of the flue basically the same, so that the airflow load in the flue is roughly relatively balanced, optimize the path of smoke flow through the dust collecting plates, reduce the dead corners of smoke collection, make it easier to capture the fine dust in the smoke, and better reduce the fine dust content in the smoke discharged from the flue.

[0027] 10. The dust collecting device also includes a vibrating device. A limit bracket is installed at the tail end of the flue. The limit bracket is arranged on the left and right sides of the tail end of the flue. The frame slides up and down along the limit bracket. The vibrating device includes a bracket, a reciprocating motor and a vibrating beam. The reciprocating motor is installed on the wall of the flue through the bracket. The vibrating beam is fixedly connected to the output shaft of the reciprocating motor. The dust collecting component is fixed on the vibrating beam. The reciprocating motor drives the dust collecting component to move to shake off the dust collected thereon. With such a configuration, the dust collecting component can be removed without disassembling the dust collecting component, thereby simplifying the operation difficulty of the maintenance personnel of the dust collecting device at the tail end of the flue.

[0028] These features and advantages of the present invention will be disclosed in detail in the following specific implementation manners and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a side sectional view of the dust collecting device in the embodiment of the utility model;

[0030] Figure 2 for Figure 1 The enlarged view of point A in the middle;

[0031] Figure 3 This is a schematic cross-sectional view of a dust collecting assembly in an embodiment of the utility model;

[0032] Figure 4 for Figure 3 The enlarged view of point B in the middle;

[0033] Figure 5 It is a schematic diagram of smoke passing through the dust collecting assembly in an embodiment of the utility model.

[0034] Reference numerals:

[0035] 100. dust collecting assembly, 110. dust collecting plate, 111. through hole, 112. spoiler, 113. first dust collecting plate portion, 114. second dust collecting plate portion, 115. flue gas flow channel, 120. frame;

[0036] 200. Vibrating device, 210. Bracket, 220. Reciprocating motor, 230. Vibrating beam, 231. Cross beam, 232. Suspension beam; 300. Limiting bracket. DETAILED DESCRIPTION

[0037] The following is an explanation and description of the technical scheme of the embodiment of the utility model in conjunction with the drawings of the embodiment of the utility model, but the following embodiment is only a preferred embodiment of the utility model, not all. Based on the embodiment in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the protection scope of the utility model.

[0038] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0039] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" and "several" mean two or more, unless otherwise clearly defined.

[0040] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] Embodiment 1:

[0042] like Figures 1 to 5 As shown, a dust collecting device at the tail end of a flue proposed in the embodiment of the utility model is installed at the tail end of the flue and is used to collect dust in the smoke at the tail end of the flue. The dust collecting device includes a dust collecting assembly 100 intercepted in the flue, the dust collecting assembly 100 includes a frame 120 and a plurality of dust collecting plates 110, the plurality of dust collecting plates 110 are fixed on the frame 120 in sequence and at intervals, the dust collecting plates 110 have an angle with the direction of smoke exhaust from the flue, the dust collecting plates 110 are provided with a plurality of through holes 111 and some flow interference plates 112, the flow interference plates 112 are raised from one end of the through hole 111 in a direction away from the dust collecting plates 110 to interfere with the flow of smoke, and when the smoke passes through the flow interference plates 112, a vortex is generated due to the obstruction of the flow interference plates 112. The tail end of the flue is trumpet-shaped with a large front and a small back.

[0043] With such arrangement, a flue gas flow passage 115 is formed between two adjacent dust collecting plates 110 , and a flue gas flow passage 115 is also formed between the dust collecting plate 110 at the edge of the dust collecting assembly 100 and the wall of the flue. The flue gas is blocked by the spoiler 112 during its flow, thereby generating vortices in the flue gas flow duct 115. At the same time, due to the presence of the through hole 111, the flue gas between two adjacent flue gas flow ducts 115 can flow in series with each other. The series-flowing flue gas makes the flow direction of the flue gas in the flue gas flow duct 115 more complicated. In addition, the edge of the through hole 111 also blocks the flue gas flow velocity, further increasing the complexity of the flue gas flow, thereby generating more vortices. The vortices make it easier for the fine dust in the flue gas to aggregate into larger dust clusters, which are more easily captured by the dust collecting plate 110. Furthermore, since the dust collecting plate 110 has an angle with the direction of smoke exhaust from the flue, the dust collecting area of ​​the dust collecting plate 110 is increased within a limited length, further improving the dust collecting effect of the dust collecting plate 110, so that the secondary dust generated by the dust removal device at the front end of the flue can be better captured by the dust collecting assembly 100 at the tail end of the flue, thereby better reducing the dust content in the flue gas discharged from the flue.

[0044] The dust collecting assembly 100 may be arranged in a direction perpendicular to the direction of the flue gas, or may be arranged at a certain angle to the direction of the flue gas.

[0045] In this embodiment, the through holes 11 on the dust collecting plate 110 are preferably arranged in multiple rows in the vertical direction, and the spoilers 112 are correspondingly arranged in multiple rows, and the protrusion directions of two adjacent spoilers 112 in the same row are opposite. Exemplarily, the dust collecting plate 110 is placed vertically, and one of the two adjacent spoilers 112 protrudes to the left side of the dust collecting plate 110, and the other spoiler 112 protrudes to the right side of the dust collecting plate 110.

[0046] With such arrangement, on the one hand, both sides of the dust collecting plate 110 are provided with spoilers 112, and vortices are formed when the flue gas passes through both sides of the dust collecting plate 110, thereby increasing the probability that the dust in the flue gas on both sides of the dust collecting plate 110 aggregates into large-particle dust clusters; on the other hand, the staggered arrangement of the spoilers 112 allows a longer distance between the formed vortex and the next spoiler 112, and the large-particle dust clusters carried by the vortex are more likely to contact the dust collecting plate 110, and the dust collecting plate 110 is more likely to capture large-particle dust clusters, thereby improving the dust collecting effect of the dust collecting plate 110 and better reducing the dust content in the flue gas discharged from the flue.

[0047] More preferably in this embodiment, two adjacent rows of through holes 111 are arranged alternately.

[0048] With such an arrangement, flue gases at different heights produce different flow phenomena, so that two adjacent flue gases influence each other, thereby generating more eddies, thereby further increasing the probability of formation of large particle dust clusters and further improving the dust collecting effect of the dust collecting plate 110.

[0049] In another preferred embodiment, the dust collecting assembly 100 includes an air inlet side and an air outlet side, the smoke enters the dust collecting assembly 100 from the air inlet side and is discharged from the air outlet side, and the spoiler 112 is arranged at one end of the through hole 111 close to the air outlet side.

[0050] With such arrangement, the flue gas is blocked and guided by the spoiler 112, making it easier for the flue gas to flow into the adjacent flue gas flow duct 115, thereby further increasing the complexity of the flue gas flow in the flue gas flow duct 115, making it easier to generate more vortices, further increasing the probability of forming large-particle dust clusters, and further improving the dust collecting effect of the dust collecting plate 110, thereby better reducing the dust content in the flue gas discharged from the flue.

[0051] It is understandable that, in some other embodiments, the spoiler 112 may also be disposed at one end of the through hole 111 close to the air inlet side.

[0052] With such arrangement, the flue gas on both sides of the flue gas flow duct 115 close to different dust collecting plates 110 is blocked and guided by the spoiler 112, and the flue gas on both sides of the flue gas flow duct 115 is more easily guided to the central area of ​​the flue gas flow, and combined with the flue gas flowing through the adjacent flue gas flow duct 115, the complexity of the flue gas flow in the flue gas flow duct 115 is further increased, thereby making it easier to generate more vortices, further increasing the probability of formation of large-particle dust clusters, and further improving the dust collecting effect of the dust collecting plate 110, thereby better reducing the dust content in the flue gas discharged from the flue.

[0053] It is understandable that, in some other embodiments, part of the spoiler 112 may be disposed at one end of the through hole 111 close to the air outlet side, and the other part of the spoiler 112 may be disposed at one end of the through hole 111 close to the air inlet side.

[0054] Such arrangement enables the flue gas flow ducts 115 in different areas to have different movement trends, thereby further increasing the complexity of the flue gas flow in the flue gas flow duct 115, making it easier to generate more vortices, further increasing the probability of formation of large-particle dust clusters, and further improving the dust collecting effect of the dust collecting plate 110, thereby better reducing the dust content in the flue gas discharged from the flue.

[0055] In another preferred embodiment, the through hole 111 and the spoiler 112 are stamped and formed integrally on the dust collecting plate 110 .

[0056] With such arrangement, the processing of the dust collecting plate 110 is simpler, the cost of the dust collecting assembly 100 is lower, and the economic benefit is higher.

[0057] In another preferred embodiment, the spoiler 112 includes a fixed end and a free end, the fixed end is fixed on the dust collecting plate 110, and the free end extends from one end of the fixed end in a direction away from the dust collecting plate 110, and the width of the spoiler 112 gradually decreases in the direction extending from the fixed end to the free end.

[0058] With such arrangement, on the one hand, since the widths of the spoiler 112 at different positions are different, the blocking effects of the spoiler 112 on smoke at different positions are different, so that the vortex produces a more complex rotation direction, which is more conducive to the mutual collision and superposition of different vortices; on the other hand, the shape of the spoiler 112 is easier to form through a stamping process, and the cost of the stamping mold is lower, which further simplifies the processing of the dust collecting plate 110 and reduces the cost of the dust collecting assembly 100.

[0059] In another preferred embodiment, the dust collecting plate 110 includes a first dust collecting plate portion 113 and a second dust collecting plate portion 114 arranged in sequence along the flue gas direction, and the first dust collecting plate portion 113 and the second dust collecting plate portion 114 are arranged in opposite directions to make the dust collecting plate 110 V-shaped.

[0060] With such an arrangement, a V-shaped flue gas flow duct 115 is formed between two adjacent dust collecting plates 110, and the flue gas undergoes a change in direction during the flow process. This change in direction further increases the complexity of the flue gas flow, further increases the probability of the formation of large-particle dust clusters, and further improves the dust collecting effect of the dust collecting plates 110, thereby better reducing the dust content in the flue gas discharged from the flue. At the same time, the V-shaped dust collecting plates 110 allow a single dust collecting plate 110 to occupy a smaller space, thereby improving the compactness of the dust collecting assembly 100, and avoiding the need to additionally provide small-sized dust collecting plates 110 on both sides of the dust collecting assembly 100 due to insufficient space, thereby further reducing the cost of the dust collecting assembly 100.

[0061] More preferably, the first dust collecting plate portion 113 is connected to the second dust collecting plate portion 114, and the dust collecting plate 110 is bent and integrally formed into a V-shape.

[0062] With such configuration, the dust collecting plate 110 can be bent into shape by a bending machine, thereby avoiding the need for the first dust collecting plate portion 113 and the second dust collecting plate 110 to be welded to each other or fixed mechanically, thereby reducing the cost of the dust collecting plate 110 and the dust collecting assembly 100.

[0063] In another preferred embodiment, the plurality of dust collecting plates 110 include a plurality of dust collecting plates 110 installed on the left side of the frame 120 and a plurality of dust collecting plates 110 installed on the right side of the frame 120, and the dust collecting plates 110 on the left and right sides are mirror-imaged.

[0064] Such an arrangement can make the resistance to flue gas flow on both sides of the flue basically consistent, so that the airflow load in the flue can be maintained roughly relatively balanced, optimize the path of the flue gas flowing through the dust collecting plate 110, reduce the dead corners of flue gas collection, make the dust in the flue gas easier to be captured, and better reduce the dust content in the flue gas discharged from the flue.

[0065] Embodiment 2:

[0066] Based on Example 1, Figure 1 As shown, in the present embodiment, the fine dust collection device also includes a rapping device 200, a limiting bracket 300 is installed at the tail end of the flue, the limiting bracket 300 is arranged on the left and right sides of the tail end of the flue, and the frame 120 can slide up and down relative to the limiting bracket 300, and the rapping device 200 includes a bracket 210, a reciprocating motor 220 and a rapping beam 230, the reciprocating motor 220 is installed on the wall of the flue through the bracket 210, the rapping beam 230 is fixedly connected to the output shaft of the reciprocating motor 220, and the dust collecting component 100 is fixed on the rapping beam 230, and the operation of the reciprocating motor 220 drives the dust collecting component 100 to move to shake off the captured dust.

[0067] With such arrangement, the dust collecting assembly 100 can be deashed without disassembling the dust collecting assembly 100, thereby simplifying the operation difficulty for maintenance personnel of the fine dust collecting device at the tail end of the flue.

[0068] Among them, the rapping beam 230 includes a cross beam 231 and a suspension beam 232 , the output shaft of the reciprocating motor 220 is fixedly connected to the cross beam 231 , the cross beam 231 is fixedly connected to the suspension beam 232 , and one end of the dust collecting plate 110 is fixed on the suspension beam 232 .

[0069] It should be noted that since the dust collection device at the tail end of the flue is arranged at the tail end of the flue, dust removal cannot be performed when the smoke exhaust unit is working. Therefore, dust removal is required after the unit is completely shut down (for example: maintenance, shutdown, etc.). An ash discharge port is provided under the flue, and the dust falling from the dust collecting assembly 100 is discharged through the smoke exhaust port.

[0070] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Those skilled in the art should understand that the utility model includes but is not limited to the contents described in the drawings and the above specific implementation. Any modification that does not deviate from the functional and structural principles of the utility model will be included in the scope of the claims.

Claims

1. A dust collecting device at the tail end of a flue, installed at the tail end of a flue, used to collect dust in the flue gas at the tail end of the flue, characterized in that: The fine dust collection device includes a dust collecting component intercepted in the flue, the dust collecting component includes a frame and a plurality of dust collecting plates, the plurality of dust collecting plates are fixed on the frame in sequence and at intervals, the dust collecting plates have an angle with the direction of smoke exhaust from the flue, the dust collecting plates are provided with a plurality of through holes and some spoiler plates, the spoiler plates protrude from one end of the through hole in a direction away from the dust collecting plate to interfere with the flow of part of the smoke and thus generate a vortex.

2. A dust collection device at the tail end of a flue as claimed in claim 1, characterized in that: The through holes are arranged in a plurality of rows in the vertical direction of the dust collecting plate, and the spoilers are correspondingly arranged in a plurality of rows, and the protrusion directions of two adjacent spoilers in the same row are opposite.

3. A dust collecting device at the tail end of a flue as claimed in claim 2, characterized in that: The through holes in two adjacent rows are arranged in a staggered manner.

4. A dust collecting device at the tail end of a flue as claimed in claim 1, characterized in that: The dust collecting assembly includes an air inlet side and an air outlet side, and the spoiler is arranged on a side of the through hole close to the air outlet side; or, The spoiler is arranged at one end of the through hole close to the air inlet side; or, Part of the spoiler is arranged on a side of the through hole close to the air outlet side, and the other part of the spoiler is arranged on an end of the through hole close to the air inlet side.

5. A dust collecting device at the tail end of a flue as claimed in claim 1, characterized in that: The through hole and the spoiler are integrally formed on the dust collecting plate by stamping.

6. A dust collecting device at the tail end of a flue as claimed in claim 1, characterized in that: The spoiler includes a fixed end and a free end, the fixed end is fixed to the dust collecting plate, the free end gradually extends from the fixed end in a direction away from the dust collecting plate, and the width of the spoiler gradually decreases in the direction from the fixed end to the free end.

7. A dust collecting device at the tail end of a flue as claimed in claim 1, characterized in that: The dust collecting plate comprises a first dust collecting plate portion and a second dust collecting plate portion which are sequentially arranged along the direction of smoke, and the first dust collecting plate portion and the second dust collecting plate portion are arranged in opposite directions so that the dust collecting plate is V-shaped.

8. A dust collecting device at the tail end of a flue as claimed in claim 7, characterized in that: The first dust collecting plate portion is connected to the second dust collecting plate portion, and the dust collecting plate is bent and integrally formed into a V shape.

9. A dust collecting device at the tail end of a flue as claimed in claim 1, characterized in that: The plurality of dust collecting plates include a plurality of dust collecting plates installed on the left side of the frame and a plurality of dust collecting plates installed on the right side of the frame, and the dust collecting plates on the left and right sides are arranged in a mirror image.

10. A dust collecting device at the tail end of a flue as claimed in claim 1, characterized in that: The fine dust collection device also includes a vibrating device. A limiting bracket is installed at the tail end of the flue. The limiting bracket is arranged on the left and right sides of the tail end of the flue. The frame slides up and down along the limiting bracket. The vibrating device includes a bracket, a reciprocating motor and a vibrating beam. The reciprocating motor is installed on the wall of the flue through the bracket. The vibrating beam is fixedly connected to the output shaft of the reciprocating motor. The dust collecting assembly is fixed on the vibrating beam. The operation of the reciprocating motor drives the dust collecting assembly to move to shake off the dust captured thereon.

Images