Waste gas recovery equipment for thermal power plant

Abstract

The invention relates to the technical field of thermal power plants, and discloses thermal power plant waste gas recovery equipment which comprises a barrel, one side of the barrel is fixedly connected with a first connecting pipe, the end, arranged on the outer side of the barrel, of the first connecting pipe is fixedly connected with a first shell, and the circumferential inner wall of the first shell is fixedly connected with a fixing ring; a waste box is arranged at the top of the fixing ring, and the circumferential outer wall of the waste box makes contact with the circumferential inner wall of the first shell. Through cooperative use of absorption liquid, a filter plate, a second connecting pipe and a first shell in the barrel, waste gas can be filtered for multiple times, the waste gas filtering efficiency is greatly improved, the problem of insufficient filtering precision is avoided, and through arrangement of a cover plate, a waste box and a magnetic strip, the filter plate can be rapidly replaced, and the use cost is reduced. The operation is simple, convenient and rapid when the filter plate is replaced, and tedious old filter screen replacement or other complex operations are not needed.

Description

Technical Field

[0001] The invention relates to the technical field of thermal power plants, in particular to waste gas recovery equipment for thermal power plants. Background Art

[0002] Thermal power plants produce a large amount of waste gas during industrial production. These waste gases not only pollute the environment, but may also pose a health threat to the community. In order to treat these waste gases, thermal power plants usually need to introduce recovery equipment.

[0003] After searching, a Chinese patent with the announcement number CN218306773U discloses an industrial waste gas recovery device, including a filter box, a fixed plate and a filter bag are arranged inside the filter box, the fixed plate is fixedly connected to the inner wall of the filter box, and the filter bag is arranged at the bottom of the fixed plate. However, there are still the following defects, but it only uses a single filter bag to filter the waste gas. When such a single filter bag filter is used to process complex waste gas, it is easy to have insufficient filtering accuracy, resulting in poor filtering effect. Summary of the invention

[0004] 1. Technical issues to be solved

[0005] In view of the shortcomings of the prior art, the present invention provides a waste gas recovery device for a thermal power plant, which is mainly used to solve the problem that only a single filter bag is used to filter the waste gas. When processing complex waste gas, this single filter bag filtration is prone to insufficient filtering accuracy, resulting in poor filtering effect.

[0006] (II) Technical solution

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A waste gas recovery device for a thermal power plant comprises a cylinder, one side of the cylinder is fixedly connected with a first connecting pipe, the first connecting pipe is arranged at one end of the outer side of the cylinder and is fixedly connected with a first shell, the circumferential inner wall of the first shell is fixedly connected with a fixing ring, a waste box is arranged on the top of the fixing ring, and the circumferential outer wall of the waste box contacts the circumferential inner wall of the first shell, the bottom of the waste box is provided with a through groove, the inner wall of the waste box is provided with a filter plate, and the top of the first shell is provided with a pulling mechanism for convenient replacement of the filter plate, a plurality of guide rods are fixedly connected between the inner walls of the two sides of the cylinder, two sliding blocks are slidably connected between each adjacent two guide rods, a second connecting pipe is rotatably connected between each adjacent two guide rods, a plurality of through holes are provided on the circumferential outer walls of the two second connecting pipes, and the plurality of through holes are all located on the upper surface of the second connecting pipe, a hose is fixedly connected to the circumferential outer walls of the two second connecting pipes, and the hose is connected to the second connecting pipe, and a pushing mechanism is provided on the inner wall of the bottom of the cylinder to drive the two second connecting pipes to move.

[0009] Furthermore, the lifting mechanism includes a cover plate, which is arranged on the top of the first shell. A magnetic strip is fixedly connected to the top of the waste box, and the magnetic strip is adsorbed to the cover plate. A limiting mechanism for fixing the cover plate is provided on the outer side of the circumference of the first shell.

[0010] On the basis of the above-mentioned scheme, the limiting mechanism includes a plurality of protrusions, and the plurality of protrusions are evenly fixedly connected to the circumferential outer wall of the first shell. The top of the cover plate is slidably connected with a plurality of threaded rods, and the threaded rods are threadedly connected to the protrusions. One end of the plurality of threaded rods arranged on the top of the cover plate is fixedly connected with a pressure plate, and the bottoms of the plurality of pressure plates are in contact with the top of the cover plate.

[0011] As a further solution of the present invention, the pushing mechanism includes a bottom shell, which is fixedly connected to the bottom inner wall of the cylinder, a motor is fixedly connected to one side of the bottom shell, and the output shaft of the motor passes through the bottom shell and is connected to the missing gear through a key, and a guide frame is fixedly connected to the inner wall of one side of the cylinder. The circumferential outer wall of the guide frame is slidably connected to a fixed frame, and the two second connecting tubes are rotatably connected to the fixed frame, a third rack is fixedly connected to the bottom of the fixed frame, and the third rack is meshed with the missing gear, a tension spring is fixedly connected to one side of the fixed frame, and the other end of the tension spring is fixed to the guide frame.

[0012] Furthermore, two first racks are fixedly connected to one side of the cylinder, two second racks are fixedly connected to one side of the cylinder, one end of each of the two second connecting pipes passes through the slider and is fixedly connected to a first gear, and the first gear can mesh with the first rack and the second rack.

[0013] On the basis of the above scheme, a second flow guide tube connected to the cylinder is fixedly connected to one side of the cylinder, a spiral sheet is fixedly connected to the circumferential outer side of the output shaft of the motor, and the outer side of the spiral sheet is in contact with the circumferential inner wall of the second flow guide tube, one end of the second flow guide tube is fixedly connected to a second shell connected to the second flow guide tube, one side of the second shell is fixedly connected to a first flow guide tube connected to the second shell, and the first flow guide tube is fixed to the cylinder, and the inner wall of the second shell is provided with a filtering mechanism for filtering the absorption liquid.

[0014] As a further solution of the present invention, the filtering mechanism is a filter element, and the filter element is arranged on the inner wall of the second shell.

[0015] Furthermore, an air outlet pipe is fixedly connected to the top of the cylinder, and the air outlet pipe is communicated with the cylinder. An air inlet pipe is fixedly connected to the circumferential outer side of the first shell, and the air inlet pipe is communicated with the first shell. One end of the air inlet pipe and the air outlet pipe are fixedly connected with a flange.

[0016] (III) Beneficial effects

[0017] Compared with the prior art, the present invention provides a waste gas recovery device for a thermal power plant, which has the following beneficial effects:

[0018] 1. The present invention realizes multiple filtration of exhaust gas through the coordinated use of the absorption liquid, the filter plate, the second connecting pipe and the first shell in the cylinder, which greatly improves the filtration efficiency of the exhaust gas, avoids the problem of insufficient filtration accuracy, ensures the safety and environmental protection of the exhaust gas, and improves the use efficiency and effect of the exhaust gas recovery equipment.

[0019] 2. The present invention realizes the rapid replacement of the filter plate by providing a cover plate, a waste box and a magnetic strip, making the operation simple and quick when replacing the filter plate, without the need for tedious replacement of old filters or other complicated operations, thereby reducing equipment downtime, improving the filtering efficiency and equipment maintenance efficiency, and the waste box can collect impurities filtered out by the filter plate, which is convenient for subsequent processing.

[0020] 3. The present invention greatly increases the range of the exhaust gas sprayed from the through hole through the coordinated use of the missing gear, the third rack and the fixed frame, thereby significantly increasing the contact area between the exhaust gas and the absorption liquid. The exhaust gas can be more fully absorbed and purified in the process of passing through the absorption liquid, and the filtration efficiency is greatly improved.

[0021] 4. The present invention further improves the range of the exhaust gas sprayed from the through hole by using the first gear, the first rack and the second rack in coordination, so that the exhaust gas can be sprayed into the absorption liquid evenly, thereby significantly improving the filtering efficiency of the absorption liquid.

[0022] 5. The present invention realizes filtering of the absorption liquid by providing spiral sheets and filter elements, which can effectively remove impurities and particulate matter, which can not only greatly improve the utilization rate of the absorption liquid, but also greatly save resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of the three-dimensional structure of a waste gas recovery device for a thermal power plant proposed by the present invention;

[0024] Figure 2 This is a schematic diagram of the cross-sectional structure of a cylinder of a waste gas recovery device for a thermal power plant proposed by the present invention;

[0025] Figure 3 This is a partial enlarged structural schematic diagram of a waste gas recovery device for a thermal power plant proposed by the present invention;

[0026] Figure 4 This is a schematic diagram of the cross-sectional structure of a first shell of a waste gas recovery device for a thermal power plant proposed by the present invention;

[0027] Figure 5This is a schematic diagram of the enlarged structure of a waste box of a waste gas recovery device for a thermal power plant proposed by the present invention.

[0028] In the figure: 1, cylinder; 2, air outlet pipe; 3, cover plate; 4, first shell; 5, first connecting pipe; 6, second shell; 7, first guide pipe; 8, first rack; 9, second rack; 10, spiral sheet; 11, second guide pipe; 12, filter element; 13, missing gear; 14, guide frame; 15, guide rod; 16, slider; 17, tension spring; 18, fixing frame; 19, third rack; 20, second connecting pipe; 21, through hole; 22, hose; 23, first gear; 24, magnetic strip; 25, pressure plate; 26, bump; 27, waste box; 28, fixing ring; 29, filter plate; 30, air inlet pipe; 31, through groove; 32, bottom shell; 33, threaded rod. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] Reference Figure 1-Figure 5A waste gas recovery device for a thermal power plant comprises a cylinder 1, a first connecting pipe 5 is welded to one side of the cylinder 1, one end of the first connecting pipe 5 is arranged on the outside of the cylinder 1 and is fixed to a first shell 4 by bolts, an outlet pipe 2 is welded to the top of the cylinder 1, and the outlet pipe 2 is connected to the cylinder 1, an inlet pipe 30 is welded to the outer side of the circumference of the first shell 4, and the inlet pipe 30 is connected to the first shell 4, and one end of the inlet pipe 30 and the outlet pipe 2 are both welded with flanges, and the inlet pipe 30 and the outlet pipe 2 are conveniently connected through the flange. The pipe connection with the outside world greatly improves the efficiency of installation and maintenance. A fixing ring 28 is welded on the circumferential inner wall of the first shell 4. A waste box 27 is arranged on the top of the fixing ring 28. The circumferential outer wall of the waste box 27 contacts the circumferential inner wall of the first shell 4. A through groove 31 is opened at the bottom of the waste box 27. A filter plate 29 is arranged on the inner wall of the waste box 27. A lifting mechanism for convenient replacement of the filter plate 29 is arranged on the top of the first shell 4. A plurality of guide rods 15 are welded between the inner walls on both sides of the cylinder 1. Each guide rod 15 is provided with a plurality of guide rods 15. Two sliders 16 are slidably connected between two adjacent guide rods 15, and a second connecting pipe 20 is rotatably connected between each two adjacent guide rods 15 through a bearing. A plurality of through holes 21 are opened on the circumferential outer walls of the two second connecting pipes 20, and the plurality of through holes 21 are located on the upper surface of the second connecting pipe 20. A hose 22 is fixed to the circumferential outer walls of the two second connecting pipes 20 by bolts, and the hose 22 is connected to the second connecting pipe 20. A pushing mechanism for driving the two second connecting pipes 20 to move is provided on the inner wall of the bottom of the cylinder 1. The exhaust gas enters the first shell 4, and then passes through the filter plate 29 from the first shell 4 into the first connecting pipe 5. The exhaust gas of the first connecting pipe 5 enters the two second connecting pipes 20 respectively through the two hoses 22. The exhaust gas in the second connecting pipe 20 is evenly sprayed into the absorption liquid in the cylinder 1 through the plurality of through holes 21, so that the exhaust gas is filtered multiple times by the filter plate 29 and the absorption liquid in the cylinder 1, which greatly improves the filtering efficiency of the exhaust gas and avoids the problem of insufficient filtering accuracy.

[0031] In the present invention, the lifting mechanism includes a cover plate 3, which is arranged on the top of the first shell 4. The top of the waste box 27 is fixed with a magnetic strip 24 by bolts, and the magnetic strip 24 is adsorbed on the cover plate 3, and the magnetic force of the magnetic strip 24 is greater than the gravity of the waste box 27 and the filter plate 29. A limiting mechanism for fixing the cover plate 3 is provided on the circumferential outer side of the first shell 4, and the limiting mechanism includes a plurality of protrusions 26, and the plurality of protrusions 26 are evenly fixed to the circumferential outer wall of the first shell 4 by bolts. The top of the cover plate 3 is slidably connected with a plurality of threaded rods 33, and the threaded rods 33 are threadedly connected with the protrusions 26. The plurality of threaded rods 33 are arranged on one end of the top of the cover plate 3 and are fixed with a pressure plate 25 by bolts, and the bottoms of the plurality of pressure plates 25 are in contact with the top of the cover plate 3. The pressure plate 25 is rotated, and the pressure plate 25 drives the threaded rods 33 to rotate , so that the threaded rod 33 is threadedly connected with the protrusion 26, and at the same time, the threaded rod 33 drives the pressure plate 25 to move downward, so that the pressure plate 25 contacts with the cover plate 3, thereby realizing the rapid fixation of the cover plate 3, and the cover plate 3 is disengaged by rotating the limiting mechanism, and then the cover plate 3 is pulled upward to separate the cover plate 3 from the first shell 4, and at the same time, the cover plate 3 drives the magnetic strip 24 to move upward, and the magnetic strip 24 drives the waste box 27 and the filter plate 29 to move upward, so that the waste box 27 is separated from the first shell 4, and then the filter plate 29 is taken out of the waste box 27, and a new filter plate 29 is placed in the waste box 27, and then the waste box 27 is placed in the first shell 4, and then the cover plate 3 is covered, thereby realizing the rapid replacement of the filter plate 29, greatly reducing the downtime, and improving the filtering efficiency and the maintenance efficiency of the equipment.

[0032] In the present invention, the pushing mechanism includes a bottom shell 32, which is welded to the bottom inner wall of the cylinder 1, a motor is fixed to one side of the bottom shell 32 by bolts, and the output shaft of the motor passes through the bottom shell 32 and is connected to the missing gear 13 by a key, and a guide frame 14 is fixed to the inner wall of one side of the cylinder 1 by bolts. The circumferential outer wall of the guide frame 14 is slidably connected to the fixing frame 18, and the two second connecting pipes 20 are both rotatably connected to the fixing frame 18, a third rack 19 is fixed to the bottom of the fixing frame 18 by bolts, and the third rack 19 is meshed with the missing gear 13, a tension spring 17 is fixed to one side of the fixing frame 18 by bolts, and the other end of the tension spring 17 is fixed to the guide frame 14, the motor is started, and the output shaft of the motor drives the missing gear 13 to rotate, and the missing gear 13 The third rack 19 is driven to move right, and the third rack 19 drives the fixed frame 18 to move right, and the fixed frame 18 drives the two second connecting pipes 20 to move right. When the missing gear 13 is rotated to the position of missing teeth, the missing gear 13 and the rack cannot engage, and the tension of the tension spring 17 drives the fixed frame 18 to move left, and the fixed frame 18 drives the two second connecting pipes 20 to move left. At the same time, the fixed frame 18 drives the third rack 19 to move left, so that the third rack 19 is reset, and the two second connecting pipes 20 are reciprocated in this way, thereby greatly increasing the range of the exhaust gas sprayed from the through hole 21, and then increasing the contact area between the exhaust gas and the absorption liquid, thereby further improving the efficiency of exhaust gas filtration, so that the exhaust gas recovery equipment has a better exhaust gas recovery effect.

[0033] In the present invention, two first racks 8 are fixed to one side of the cylinder 1 by bolts, and two second racks 9 are fixed to one side of the cylinder 1 by bolts. One end of the two second connecting pipes 20 passes through the slider 16 and is fixed with the first gear 23 by bolts, and the first gear 23 can be meshed with the first rack 8 and the second rack 9. The two second connecting pipes 20 move back and forth, and the two second connecting pipes 20 drive the first gear 23 to move back and forth. The first gear 23 is meshed with the first rack 8 and the second rack 9 in turn, so that the first gear 23 rotates back and forth, and the first gear 23 drives the second connecting pipe 20 to swing, thereby further improving the range of the exhaust gas sprayed from the through hole 21, so that the exhaust gas can be evenly sprayed into the absorption liquid, thereby improving the filtration efficiency of the absorption liquid on the exhaust gas.

[0034] In the present invention, a second flow guide tube 11 connected to the cylinder 1 is welded on one side of the cylinder 1, a spiral sheet 10 is welded on the circumferential outer side of the output shaft of the motor, and the outer side of the spiral sheet 10 is in contact with the circumferential inner wall of the second flow guide tube 11, a second shell 6 connected to the second flow guide tube 11 is welded on one end of the second flow guide tube 11, a first flow guide tube 7 connected to the second shell 6 is welded on one side of the second shell 6, and the first flow guide tube 7 is fixed to the cylinder 1, and a filtering mechanism for filtering the absorption liquid is provided on the inner wall of the second shell 6, and the filtering mechanism is a filter element 12, and the filter element 12 It is arranged on the inner wall of the second shell 6, and then the diluted liquid is filtered through the filter element 12, which can effectively remove impurities and particulate matter, thereby improving the utilization rate of the absorption liquid and greatly saving resources. The motor output shaft drives the spiral blade 10 to rotate, and the spiral blade 10 pushes the absorption liquid in the cylinder 1 through the first guide pipe 11 into the second shell 6. The diluted liquid passes through the filtering mechanism and enters the first guide pipe 7, and then the second guide pipe 7 flows back to the cylinder 1, so that the absorption liquid circulates, and then the diluted liquid is filtered through the filtering mechanism, thereby improving the utilization rate of the absorption liquid.

[0035] Working principle of this embodiment: when in use, the exhaust gas enters the first shell 4 through the intake pipe 30, and then passes through the filter plate 29 from the first shell 4 into the first connecting pipe 5. The exhaust gas of the first connecting pipe 5 enters the two second connecting pipes 20 respectively through the two hoses 22. The exhaust gas in the second connecting pipes 20 is evenly sprayed into the absorption liquid in the cylinder 1 through multiple through holes 21. At the same time, the motor is started, and the output shaft of the motor drives the missing gear 13 to rotate, the missing gear 13 drives the third rack 19 to move right, the third rack 19 drives the fixing frame 18 to move right, and the fixing frame 18 drives the two second connecting pipes 20 to move right. When the missing gear 13 is turned to the position of the missing teeth, the missing gear 13 cannot mesh with the rack, and the tension of the tension spring 17 drives the fixing frame 18 to move to the left, and the fixing frame 18 drives the two The second connecting pipe 20 moves to the left, and at the same time, the fixing frame 18 drives the third rack 19 to move to the left, so that the third rack 19 is reset, and the two second connecting pipes 20 move back and forth in this way, thereby greatly increasing the range of the exhaust gas ejected from the through hole 21, and the two second connecting pipes 20 move back and forth, and the two second connecting pipes 20 drive the first gear 23 to move back and forth, and the first gear 23 is meshed with the first rack 8 and the second rack 9 in turn, so that the first gear 23 rotates back and forth, and the first gear 23 drives the second connecting pipe 20 to swing, and at the same time, the motor output shaft drives the spiral piece 10 to rotate, and the spiral piece 10 pushes the absorption liquid in the cylinder 1 through the first guide pipe 11 into the second shell 6, and the diluent passes through the filter element 12 into the first guide pipe 7, and then the second guide pipe 7 flows back to the cylinder 1.

[0036] The electrical components mentioned in this article are all connected to an external main controller and 220V mains electricity, and the main controller can be a conventional known device for controlling a computer or the like.

[0037] In the description of this article, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection; it can be a mechanical connection, it can be an electrical connection, or it can be a direct connection. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] In the description herein, it should be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0039] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A waste gas recovery device for a thermal power plant, comprising a cylinder (1), characterized in that: A first connecting pipe (5) is fixedly connected to one side of the cylinder (1); one end of the first connecting pipe (5) arranged outside the cylinder (1) is fixedly connected to the first shell (4); a fixing ring (28) is fixedly connected to the circumferential inner wall of the first shell (4); a waste box (27) is provided on the top of the fixing ring (28); the circumferential outer wall of the waste box (27) is in contact with the circumferential inner wall of the first shell (4); a through groove (31) is provided at the bottom of the waste box (27); a filter plate (29) is provided on the inner wall of the waste box (27); a lifting mechanism for facilitating replacement of the filter plate (29) is provided on the top of the first shell (4); both sides of the cylinder (1) A plurality of guide rods (15) are fixedly connected between the inner walls, two sliders (16) are slidably connected between each two adjacent guide rods (15), a second connecting tube (20) is rotatably connected between each two adjacent guide rods (15), a plurality of through holes (21) are opened on the circumferential outer walls of the two second connecting tubes (20), and the plurality of through holes (21) are all located on the upper surface of the second connecting tube (20), a hose (22) is fixedly connected to the circumferential outer walls of the two second connecting tubes (20), and the hose (22) is connected to the second connecting tube (20), and a pushing mechanism for driving the two second connecting tubes (20) to move is provided on the inner wall at the bottom of the cylinder (1).

2. A waste gas recovery device for a thermal power plant according to claim 1, characterized in that: The lifting mechanism comprises a cover plate (3), wherein the cover plate (3) is arranged on the top of the first shell (4), a magnetic strip (24) is fixedly connected to the top of the waste box (27), and the magnetic strip (24) is adsorbed on the cover plate (3), and a limiting mechanism for fixing the cover plate (3) is provided on the outer circumference of the first shell (4).

3. The waste gas recovery equipment for thermal power plants according to claim 2, characterized in that: The limiting mechanism comprises a plurality of protrusions (26), the plurality of protrusions (26) are uniformly fixedly connected to the circumferential outer wall of the first shell (4), the top of the cover plate (3) is slidably connected to a plurality of threaded rods (33), and the threaded rods (33) are threadedly connected to the protrusions (26), one end of the plurality of threaded rods (33) arranged on the top of the cover plate (3) is fixedly connected to a pressure plate (25), and the bottoms of the plurality of pressure plates (25) are in contact with the top of the cover plate (3).

4. The waste gas recovery equipment for a thermal power plant according to claim 1, characterized in that: The pushing mechanism comprises a bottom shell (32), the bottom shell (32) is fixedly connected to the bottom inner wall of the cylinder (1), a motor is fixedly connected to one side of the bottom shell (32), and the output shaft of the motor passes through the bottom shell (32) and is connected to the missing gear (13) through a key, and a guide frame (14) is fixedly connected to the inner wall of one side of the cylinder (1). The circumferential outer wall of the guide frame (14) is slidably connected to a fixed frame (18), and two second connecting pipes (20) are both rotatably connected to the fixed frame (18), the bottom of the fixed frame (18) is fixedly connected to a third rack (19), and the third rack (19) is meshed with the missing gear (13), and a tension spring (17) is fixedly connected to one side of the fixed frame (18), and the other end of the tension spring (17) is fixed to the guide frame (14).

5. The waste gas recovery equipment for thermal power plants according to claim 4, characterized in that: Two first racks (8) are fixedly connected to one side of the cylinder (1), and two second racks (9) are fixedly connected to one side of the cylinder (1). One end of each of the two second connecting pipes (20) passes through a slider (16) and is fixedly connected to a first gear (23), and the first gear (23) is meshable with the first rack (8) and the second rack (9).

6. The waste gas recovery equipment for a thermal power plant according to claim 5, characterized in that: A second flow guide tube (11) in communication with the cylinder (1) is fixedly connected to one side of the cylinder (1); a spiral sheet (10) is fixedly connected to the outer circumferential side of the output shaft of the motor, and the outer side of the spiral sheet (10) is in contact with the inner circumferential wall of the second flow guide tube (11); one end of the second flow guide tube (11) is fixedly connected to a second shell (6) in communication with the second flow guide tube (11); one side of the second shell (6) is fixedly connected to a first flow guide tube (7) in communication with the second shell (6), and the first flow guide tube (7) is fixed to the cylinder (1); and the inner wall of the second shell (6) is provided with a filtering mechanism for filtering the absorption liquid.

7. The waste gas recovery equipment for a thermal power plant according to claim 6, characterized in that: The filtering mechanism is a filter element (12), and the filter element (12) is arranged on the inner wall of the second housing (6).

8. The waste gas recovery equipment for thermal power plants according to claim 6, characterized in that: An air outlet pipe (2) is fixedly connected to the top of the cylinder (1), and the air outlet pipe (2) is communicated with the cylinder (1); an air inlet pipe (30) is fixedly connected to the outer circumferential side of the first shell (4), and the air inlet pipe (30) is communicated with the first shell (4); and flanges are fixedly connected to one end of the air inlet pipe (30) and the air outlet pipe (2).

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