Flue flue gas dust removal device for air pollution control

Abstract

The invention discloses a flue gas dust removal device for air pollution abatement, and relates to the technical field of flue gas dust removal, the flue gas dust removal device comprises an outer shell, an air inlet pipe is fixedly mounted on one side of the bottom of the outer shell, and an exhaust pipe is fixedly mounted on the top of the other side of the outer shell; the first sealing plate is fixedly installed on the top of the inner wall of the outer shell, a first cavity is formed between the top of the first sealing plate and the inner wall of the top of the outer shell, and the exhaust pipe is located in the first cavity; the high-pressure air charging mechanism is arranged in the first cavity; the second sealing plate is fixedly installed at the bottom of the inner wall of the outer shell, a second cavity is formed between the bottom of the second sealing plate and the inner wall of the bottom of the outer shell, and the air inlet pipe is located in the second cavity; the cloth bag cleaning device has the beneficial effect that the effect of automatically cleaning the cloth bag is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of flue gas dust removal, in particular to a flue gas dust removal device for air pollution control. BACKGROUND

[0002] Flue gas is a mixture of gas and smoke, which is the main cause of air pollution in residential areas. The composition of flue gas is very complex, including water vapor, sulfur dioxide, nitrogen, oxygen, carbon monoxide, carbon dioxide, hydrocarbons, and nitrogen oxides, etc. The smoke includes ash, coal particles, oil droplets, and high-temperature cracking products, etc. The bag filter is the most widely used flue gas dust removal equipment. When the flue gas carrying dust flows through the bag filter, the dust is blocked to achieve dust removal.

[0003] However, the surface of the bag filter will be attached with a large amount of dust residue after long-term use, which will easily block the exhaust effect of the bag filter, affect the dust removal effect, and the surface needs to be cleaned. The current cleaning method is to manually disassemble and clean the bag filter, which is very cumbersome and affects the use of the bag filter. SUMMARY

[0004] The purpose of the present application is to solve the problems existing in the prior art, and to provide a flue gas dust removal device for air pollution control. The device has the advantages of automatic cleaning of the bag filter.

[0005] To achieve the above purpose, the technical scheme adopted by the present application is as follows: a flue gas dust removal device for air pollution control, comprising an outer shell, an air inlet pipe is fixedly installed on one side of the bottom of the outer shell, an air outlet pipe is fixedly installed on the top of the other side of the outer shell, and further comprising: a first sealing plate is fixedly installed on the top of the inner wall of the outer shell, a first cavity is formed between the top of the first sealing plate and the top inner wall of the outer shell, and the air outlet pipe is located in the first cavity; a high-pressure air flushing mechanism is arranged in the first cavity; a second sealing plate is fixedly installed on the bottom of the inner wall of the outer shell, a second cavity is formed between the bottom of the second sealing plate and the bottom inner wall of the outer shell, and the air inlet pipe is located in the second cavity; a piston plate is slidingly installed above the second sealing plate; a plurality of evenly distributed corrugated expansion pipes are arranged in communication between the second sealing plate and the piston plate; a plurality of filter mechanisms are installed in the bottom of the first sealing plate, the filter mechanisms are arranged alternately with the corrugated expansion pipes, and the air inlet diameter of the filter mechanisms is smaller than the air inlet diameter of the corrugated expansion pipes.

[0006] Preferably, the filtering mechanism comprises a wind guide pipe and a dust removal cloth bag, the dust removal cloth bag is arranged inside the wind guide pipe and a wind guide cavity is arranged between the dust removal cloth bag and the inner wall of the wind guide pipe, and the top opening outside of the dust removal cloth bag is sealingly installed between the opening inner wall of the wind guide pipe.

[0007] Preferably, the piston plate is a hollow mechanism, a rotating disc is horizontally rotatably installed at the middle part of the piston plate, a driving mechanism is installed at the bottom central position of the rotating disc, a plurality of first air guide openings corresponding to the corrugated expansion pipes are formed in the piston plate, a plurality of dust removal openings corresponding to the dust removal cloth bags are also formed in the piston plate, the dust removal cloth bags extend into the dust removal openings, the bottom of the wind guide pipe is arranged at a position close to above the dust removal openings, a first through hole corresponding to the first air guide opening is formed in the rotating disc, and a second through hole corresponding to the second air guide opening is also formed in the rotating disc, the second through hole is arranged staggered with the second air guide opening when the first air guide opening is in communication with the first through hole, and the first air guide opening is arranged staggered with the first through hole when the second air guide opening is in communication with the second through hole.

[0008] Preferably, a dust removal cavity is formed between the bottom opening outside of the dust removal cloth bag and the inner wall of the dust removal opening.

[0009] Preferably, the top circumference of the dust removal opening is arranged as a round angle, and the inner diameter of the dust removal opening is adaptively inserted with the outer diameter of the bottom of the wind guide pipe.

[0010] Preferably, the top of the second sealing plate is in the shape of a circular truncated cone, a third cavity is formed between the second sealing plate and the piston plate, a cleaning opening is formed at a position of the bottom of the third cavity on one side of the shell body, and a cleaning cover is installed on the cleaning opening.

[0011] Preferably, the driving mechanism comprises a driving motor and an elastic expansion piece, a bottom plate is fixedly installed at the bottom of the shell body, the driving motor is fixedly installed at the bottom center of the bottom plate, the top of the elastic expansion piece is fixedly connected with the rotating disc, and the bottom of the elastic expansion piece is fixedly connected with the output shaft of the driving motor.

[0012] Preferably, the high-pressure air injection mechanism comprises a high-pressure air pipe, a gas distribution pipe and a plurality of air injection heads, the gas distribution pipe is fixedly installed on the inner wall of the top of the shell body, the high-pressure air pipe is fixedly installed on one side of the gas distribution pipe and extends to outside of the shell body, and the plurality of air injection heads are fixedly installed on the bottom of the gas distribution pipe and correspond to the top of the wind guide pipe one by one.

[0013] Compared with the prior art, the application has the following beneficial effects: (1) The piston plate and the corrugated expansion pipe are arranged, when the flue gas enters the second cavity, passes through the corrugated expansion pipe, enters between the piston plate and the first sealing plate, enters from the bottom of the air guide pipe, flows into the dust removal bag from the air guide cavity between the air guide pipe and the dust removal bag, and finally flows out from the top opening of the dust removal bag and is discharged from the exhaust pipe, the dust removal bag effectively removes dust from the flue gas, the corrugated expansion pipe and the dust removal bag are staggered, so that the wind flow is not directly blown on the surface of the bag for a long time, and local blockage or damage of the bag is avoided.

[0014] (2) In the application, the driving mechanism and the rotating disc are arranged, when the dust removal bag needs to be cleaned during the flue gas dust removal process, the driving mechanism drives the rotating disc to rotate, the second through hole is communicated with the second air guide opening, the first air guide opening is staggered with the first through hole, at this time, the top of the corrugated expansion pipe is blocked, the air pressure of the flue gas increases, so that the piston plate moves upwards until the bottom of the air guide pipe is inserted into the dust discharge port, the high-pressure gas pipe is connected to the high-pressure gas pump, at this time, the high-pressure gas pump is started, high-pressure gas flow is blown into the top opening of the dust removal bag from the jet head, dust and residues on the outer surface of the dust removal bag are blown off and fall on the top of the second sealing plate, and are discharged from the cleaning port, then the rotating disc is reset by the driving mechanism, so that the cleaning operation of the blocked dust removal bag during the flue gas dust removal process is realized, the cleaning efficiency is high, and the operation is convenient.

[0015] (3) During the process of driving the piston plate to move upwards until the bottom of the air guide pipe is inserted into the dust discharge port, the dust removal bag changes from the tight state to the relaxed state, at this time, the adhesion state of the dust in the original blocked position is changed, so that the dust on the surface of the dust removal bag is more easily blown off, and the convenience of cleaning the surface of the dust removal bag is improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a whole perspective view of the application.

[0017] Figure 2 It is an internal perspective view of the application.

[0018] Figure 3 It is a piston plate and a second sealing plate bottom structure schematic view of the application.

[0019] Figure 4 It is a piston plate top structure schematic view of the application.

[0020] Figure 5 It is a rotating disc local structure schematic view of the application.

[0021] Figure 6 It is a piston plate and a filter mechanism position relation view of the application Figure 7 It is a filter mechanism perspective view of the application.

[0022] Figure 8 Figure is a sectional view of the high-pressure air injection mechanism of the present application.

[0023] In the figure: 1, outer shell; 101, air inlet pipe; 102, air outlet pipe; 103, high-pressure air pipe; 104, cleaning cover; 105, bottom plate; 2, drive motor; 201, sleeve; 202, rotating rod; 3, first sealing plate; 4, piston plate; 401, dust outlet; 402, first air guide opening; 403, rotating disc; 5, second sealing plate; 501, second air guide opening; 6, air guide pipe; 7, dust removal cloth bag; 8, mounting plate; 9, support block; 10, corrugated expansion pipe; 11, gas distribution pipe; 12, air injection head. DETAILED DESCRIPTION

[0024] In the following, the present application will be further described in conjunction with specific embodiments. It should be noted that the embodiments described below or technical features thereof can be combined with each other or between technical features to form new embodiments, without conflict.

[0025] In the description of the present application, it should be noted that for orientation words such as terms "center", "transverse", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. The orientation and positional relationship shown in the drawing is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and cannot be understood as limiting the specific protection scope of the present application.

[0026] It should be noted that the terms "first", "second" and the like in the specification and claims of the present application are used to distinguish similar objects, and do not necessarily have to describe a specific order or chronological order.

[0027] EMBODIMENTS One of the preferred embodiments of the present application is as follows: Figures 1 to 8As shown, a flue gas dust removal device for air pollution control includes: an outer shell 1, with an inlet pipe 101 fixedly installed on one side of the bottom of the outer shell 1 and an exhaust pipe 102 fixedly installed on the top of the other side of the outer shell 1; a first sealing plate 3, which is fixedly installed on the top of the inner wall of the outer shell 1, forming a first cavity between the top of the first sealing plate 3 and the top inner wall of the outer shell 1, with the exhaust pipe 102 located within the first cavity; a high-pressure air-purging mechanism, which is disposed within the first cavity; and a second sealing plate 5. Plate 5 is fixedly installed at the bottom of the inner wall of the outer casing 1. A second cavity is formed between the bottom of the second sealing plate 5 and the bottom inner wall of the outer casing 1, and the air inlet pipe 101 is located in the second cavity. Piston plate 4 is slidably installed above the second sealing plate 5. Several evenly distributed corrugated telescopic pipes 10 are connected between the second sealing plate 5 and the piston plate 4. Several filter mechanisms are installed at the bottom of the first sealing plate 3. The filter mechanisms are staggered with the corrugated telescopic pipes 10, and the air guide diameter of the filter mechanism is smaller than the air guide diameter of the corrugated telescopic pipe 10. The filter mechanism includes an air guide duct 6 and a dust collector bag 7. The dust collector bag 7 is disposed inside the air guide duct 6 and an air guide cavity is formed between it and the inner wall of the air guide duct 6. The outer side of the top opening of the dust collector bag 7 is sealed to the inner wall of the opening of the air guide duct 6. When the flue gas enters the second cavity, it passes through the corrugated expansion tube 10 and enters between the piston plate 4 and the first sealing plate 3. It then enters from the bottom of the air guide duct 6, flows into the dust collector bag 7 through the air guide cavity between the air guide duct 6 and the dust collector bag 7, and finally flows out from the top opening of the dust collector bag 7 and is discharged from the exhaust pipe 102. The dust collector bag 7 effectively removes dust from the flue gas. Piston plate 4 is a hollow mechanism. A turntable 403 is horizontally mounted on the middle of piston plate 4. A drive mechanism is installed at the bottom center of turntable 403. Piston plate 4 has several first air guide ports 402 corresponding to corrugated telescopic tubes 10. Piston plate 4 also has several dust discharge ports 401 corresponding to dust collector bags 7. Dust collector bags 7 extend into dust discharge ports 401. The bottom of air guide pipe 6 is located near the top of dust discharge ports 401. Turntable 403 has first through holes corresponding to the first air guide ports 402. Turntable 403 also has second through holes corresponding to the second air guide ports 502. When the first air guide port 402 is connected to the first through hole, the second through hole is staggered from the second air guide port 502. When the second through hole is connected to the second air guide port 502, the first air guide port 402 is staggered from the first through hole. A dust discharge cavity is formed between the outer side of the bottom opening of the dust collector bag 7 and the inner wall of the dust discharge port 401. During the flue gas dust removal process, when the dust collector bag 7 needs to be cleaned, the drive mechanism drives the turntable 403 to rotate, so that the second through hole is connected to the second air guide port 502, and the first air guide port 402 is misaligned with the first through hole. At this time, the top of the corrugated telescopic pipe 10 is blocked, and the air pressure of the flue gas will increase, thereby driving the piston plate 4 to move upward until the bottom of the air guide pipe 6 is inserted into the dust discharge port 401. The high-pressure air pipe 6 is connected to the high-pressure air pump, and the high-pressure air pump is started. The jet nozzle 12 blows high-pressure airflow into the top opening of the dust collector bag 7, blowing off the dust and residue on the outer surface of the dust collector bag 7 and letting it fall on the top of the second sealing plate 5. It is then cleaned and discharged from the cleaning port. Then the drive mechanism resets the turntable 403 again, thus realizing the operation of cleaning the blocked dust collector bag 7 during the flue gas dust removal process. The cleaning efficiency is high and the operation is convenient. The top circumference of the dust discharge port 401 is rounded, and the inner diameter of the dust discharge port 401 is compatible with the outer diameter of the bottom of the air guide duct 6. When the piston plate 4 moves upward, the rounded corners facilitate the insertion of the bottom of the air guide duct 6 into the dust discharge port 401.

[0028] The top of the second sealing plate 5 is truncated cone-shaped, and a third cavity is formed between the second sealing plate 5 and the piston plate 4. A cleaning port is provided on one side of the outer casing 1 at the bottom of the third cavity. A cleaning cover 104 is installed on the cleaning port. Dust falling from the dust collection bag 7 accumulates on the second sealing plate 5. The top of the second sealing plate 5 is set in a truncated cone shape to facilitate the cleaning of dust on its top.

[0029] The drive mechanism includes a drive motor 2 and an elastic telescopic component. The elastic telescopic component includes a sleeve 201 and a rotating rod 202. The bottom of the sleeve 201 is fixedly connected to the output shaft of the drive motor 2. The rotating rod 202 is vertically slidably installed on the inner wall of the sleeve 201. A return spring is fixedly installed between the bottom of the sleeve 201 and the rotating rod 202. The top of the rotating rod 202 is fixedly connected to the bottom of the turntable 403. A base plate 105 is fixedly installed on the bottom of the outer shell 1. The drive motor 2 is fixedly installed at the bottom center of the base plate 105. The top of the elastic telescopic component is fixedly connected to the turntable 403, and the bottom of the elastic telescopic component is fixedly connected to the output shaft of the drive motor 2.

[0030] The high-pressure air-cushioning mechanism includes a high-pressure air pipe 103, a distribution pipe 11, and several jet nozzles 12. The distribution pipe 11 is fixedly installed on the top inner wall of the outer casing 1. The high-pressure air pipe 103 is fixedly installed on one side of the distribution pipe 11 and extends to the outside of the outer casing 1. Several jet nozzles 12 are fixedly installed at the bottom of the distribution pipe 11 and correspond one-to-one with the top of the air duct 6.

[0031] The basic principles, main features, and advantages of this application have been described above. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this application. Various changes and modifications can be made to this application without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection claimed by this application is defined by the appended claims and their equivalents.

Claims

1. A flue gas dust removal device for air pollution control, comprising: The outer casing (1) has an air inlet pipe (101) fixedly installed on one side of its bottom and an exhaust pipe (102) fixedly installed on the top of the other side of its outer casing (1). The outer casing (1) is characterized by further comprising: The first sealing plate (3) is fixedly installed on the top of the inner wall of the outer shell (1), and a first cavity is formed between the top of the first sealing plate (3) and the top inner wall of the outer shell (1), and the exhaust pipe (102) is located in the first cavity. A high-pressure air-cushioning mechanism is disposed within the first cavity; The second sealing plate (5) is fixedly installed on the bottom of the inner wall of the outer shell (1). A second cavity is formed between the bottom of the second sealing plate (5) and the bottom inner wall of the outer shell (1). The air inlet pipe (101) is located in the second cavity. Piston plate (4), which is slidably mounted above the second sealing plate (5); A plurality of evenly distributed corrugated expansion tubes (10) are provided between the second sealing plate (5) and the piston plate (4). The bottom of the first sealing plate (3) is equipped with several filter mechanisms, which are arranged alternately with the corrugated telescopic pipe (10). The air guide diameter of the filter mechanism is smaller than that of the corrugated telescopic pipe (10).

2. The flue gas dust removal device for air pollution control as described in claim 1, characterized in that, The filtration mechanism includes an air duct (6) and a dust collector bag (7). The dust collector bag (7) is disposed inside the air duct (6) and has an air duct cavity between it and the inner wall of the air duct (6). The outer side of the top opening of the dust collector bag (7) is sealed between the outer side of the top opening and the inner wall of the opening of the air duct (6).

3. The flue gas dust removal device for air pollution control as described in claim 2, characterized in that, The piston plate (4) is a hollow structure. A turntable (403) is horizontally mounted on the middle of the piston plate (4). A drive mechanism is installed at the bottom center of the turntable (403). The piston plate (4) has several first air guide ports (402) corresponding to the corrugated telescopic tube (10). The piston plate (4) also has several dust discharge ports (401) corresponding to the dust collector bag (7). The dust collector bag (7) extends into the dust discharge port (401). The bottom of the air guide duct (6) is provided with Near the dust outlet (401), the turntable (403) has a first through hole corresponding to the first air guide (402) and a second through hole corresponding to the second air guide (502). When the first air guide (402) is connected to the first through hole, the second through hole is offset from the second air guide (502). When the second through hole is connected to the second air guide (502), the first air guide (402) is offset from the first through hole.

4. The flue gas dust removal device for air pollution control as described in claim 3, characterized in that, A dust discharge cavity is formed between the outer side of the bottom opening of the dust collector bag (7) and the inner wall of the dust discharge port (401).

5. The flue gas dust removal device for air pollution control as described in claim 3, characterized in that, The top circumference of the dust discharge port (401) is rounded, and the inner diameter of the dust discharge port (401) is adapted to the outer diameter of the bottom of the air guide pipe (6).

6. The flue gas dust removal device for air pollution control as described in claim 1, characterized in that, The top of the second sealing plate (5) is frustum-shaped, and a third cavity is formed between the second sealing plate (5) and the piston plate (4). A cleaning port is provided on one side of the outer shell (1) at the bottom of the third cavity, and a cleaning cover (104) is installed on the cleaning port.

7. The flue gas dust removal device for air pollution control as described in claim 3, characterized in that, The driving mechanism includes a drive motor (2) and an elastic telescopic member. A base plate (105) is fixedly installed at the bottom of the outer shell (1). The drive motor (2) is fixedly installed at the center of the bottom of the base plate (105). The top of the elastic telescopic member is fixedly connected to the turntable (403), and the bottom of the elastic telescopic member is fixedly connected to the output shaft of the drive motor (2).

8. The flue gas dust removal device for air pollution control as described in claim 2, characterized in that, The high-pressure air-cushioning mechanism includes a high-pressure air pipe (103), a distribution pipe (11), and a number of jet nozzles (12). The distribution pipe (11) is fixedly installed on the top inner wall of the outer shell (1). The high-pressure air pipe (103) is fixedly installed on one side of the distribution pipe (11) and extends to the outside of the outer shell (1). The number of jet nozzles (12) is fixedly installed at the bottom of the distribution pipe (11) and corresponds one-to-one with the top of the air guide pipe (6).

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