Boiler flue gas purification system

Abstract

The utility model relates to the technical field of flue gas purification, in particular to a boiler flue gas purification system which comprises a mounting base, a filtering mechanism, a heat recovery box and a desulfurizing tower, the filtering mechanism is arranged on the mounting base and communicated with an air inlet pipe, the filtering mechanism comprises a filtering box, a filtering net, a driving assembly, a rapping assembly and a dust sweeping assembly, the filtering box is connected with the mounting base and communicated with the air inlet pipe, the filtering net is located in the filtering box and connected with the filtering box, one end of the driving assembly is connected with the filtering box, and the other end of the driving assembly is connected with the dust sweeping assembly. The other end of the driving assembly extends into the filter box, the two groups of rapping assemblies are arranged in the filter box, and one end of each rapping assembly is in transmission connection with the output end of the driving assembly. According to the utility model, the rapping component and the ash removal component are arranged in the filter box, so that the filter screen does not need to be disassembled and manually cleaned, the workload of maintenance personnel is reduced, and the cleaning efficiency of the filter screen is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of flue gas purification, in particular to a boiler flue gas purification system. Background Art

[0002] A boiler is an energy conversion device. Energy input to the boiler includes chemical energy from the fuel and electrical energy, and the boiler outputs steam, high-temperature water, or an organic heat carrier with a certain amount of thermal energy. The original meaning of "pot" refers to a container for holding water heated over a fire, and "furnace" refers to the place where fuel is burned. A boiler consists of two main parts: the pot and the furnace. The hot water or steam produced in the boiler can directly provide the heat energy needed for industrial production and daily life. It can also be converted into mechanical energy through a steam power plant, or further converted into electrical energy through a generator. Boilers that provide hot water are called hot water boilers and are primarily used for domestic purposes, with some industrial applications. Boilers that generate steam are called steam boilers, often simply referred to as boilers, and are commonly used in thermal power plants, ships, locomotives, and industrial and mining enterprises.

[0003] Patent authorization announcement number CN 211885865 U discloses a boiler flue gas purification device. To address the problem that existing purification devices are inconvenient for filtering black ash and dust, the following solution is proposed, which includes a purification device, one side of which is connected to a smoke outlet pipe, and one side of which is connected to an air intake pipe. A filter box is fixedly mounted on the air intake pipe, and a connecting hole is formed on the top inner wall of the filter box. A sealing seat is movably mounted on the connecting hole, and a mounting frame is fixedly mounted on the bottom of the sealing seat. A filter screen is fixedly mounted within the mounting frame. A connecting seat is fixedly mounted on the top of the sealing seat, and two symmetrically arranged positioning grooves are formed on the bottom of the connecting seat. Two symmetrically arranged positioning seats are fixedly mounted on the top of the filter box, and the positioning seats are adapted to the corresponding positioning grooves. The utility model has a reasonable design, can filter black ash and dust in the flue gas through the filter screen, and is easy to disassemble and clean the filter screen.

[0004] However, the above technical solution has the following shortcomings: equipment maintenance personnel are required to regularly disassemble the filter box and manually clean the internal filter screen, and the maintenance interval is short, which not only increases the workload and work intensity of the maintenance personnel, but also prevents the purification system from working normally when the filter screen is cleaned. Utility Model Content

[0005] The purpose of the utility model is to propose a boiler flue gas purification system in response to the problems existing in the background technology.

[0006] The technical solution of the utility model is: a boiler flue gas purification system, comprising:

[0007] Install the base;

[0008] A filter mechanism is provided on a mounting base, the filter mechanism is connected to an air inlet pipe, the filter mechanism includes a filter box, a filter screen, a drive assembly, a rapping assembly and an ash sweeping assembly, the filter box is connected to the mounting base, the filter box is connected to the air inlet pipe, the filter screen is located in the filter box, the filter screen is connected to the filter box, one end of the drive assembly is connected to the filter box, the other end of the drive assembly extends into the filter box, two groups of rapping assemblies are provided, both groups of rapping assemblies are provided in the filter box, one end of the rapping assembly is transmission-connected to the output end of the drive assembly, the ash sweeping assembly is provided in the filter box, the working end of the ash sweeping assembly contacts the filter screen, and one end of the ash sweeping assembly is transmission-connected to the drive assembly;

[0009] A heat recovery box is provided on the mounting base and is located at the outlet of the filter box. The heat recovery box and the filter box are connected via a connecting pipe.

[0010] The desulfurization tower is arranged on the installation base. The desulfurization tower is located at the outlet of the heat recovery box. The desulfurization tower is connected to the heat recovery box through a connecting pipe.

[0011] Preferably, the drive assembly includes a drive motor and a drive shaft;

[0012] The driving motor is arranged on the filter box;

[0013] One end of the drive shaft is transmission-connected to the output end of the drive motor, and the other end of the drive shaft passes through the filter box and extends into the filter box.

[0014] Preferably, each rapping assembly includes a cam, a support plate, a transmission rod, a force-bearing plate, a rapping plate and a return spring;

[0015] The cam is connected to the drive shaft;

[0016] The support plate is connected to the filter box;

[0017] The transmission rod is arranged on the support plate, and the transmission rod passes through the support plate and is slidably connected to the support plate;

[0018] The force-bearing plate is connected to the transmission rod, and the force-bearing plate contacts the cam;

[0019] The rapping plate is connected to the transmission rod;

[0020] One end of the return spring is connected to the support plate, and the other end of the return spring is connected to the force-bearing plate.

[0021] Preferably, the dust sweeping assembly includes a support frame, a mounting shaft, a mounting plate, a dust sweeping brush, a mounting ring, a preload spring and a transmission assembly;

[0022] The support frame is located in the filter box, and the support frame is connected to the filter box;

[0023] The mounting shaft is rotatably connected to the support frame;

[0024] The mounting plate is sleeved on the mounting shaft, and the mounting plate is slidably connected to the mounting shaft;

[0025] There are multiple dust sweeping brushes, and the multiple dust sweeping brushes are connected to the mounting plate;

[0026] The mounting ring is sleeved on the mounting shaft, and the mounting plate is rotatably connected to the support frame;

[0027] A plurality of pre-tightening springs are provided, one end of each of the pre-tightening springs is connected to the mounting ring, and the other end of each of the pre-tightening springs is connected to the mounting plate;

[0028] One end of the transmission assembly is connected to the mounting shaft, and the other end of the transmission assembly is connected to the driving shaft.

[0029] Preferably, the transmission assembly includes a transmission shaft, a first bevel gear and a second bevel gear;

[0030] The transmission shaft is connected to the installation shaft, and the transmission shaft passes through the filter screen and is rotatably connected to the filter screen;

[0031] The first bevel gear is connected to the transmission shaft;

[0032] The second bevel gear is connected to the driving shaft, and the second bevel gear and the first bevel gear are meshed with each other.

[0033] Preferably, an ash discharge pipe is provided on one side of the filter box, and the ash discharge pipe is provided with an ash discharge valve.

[0034] Compared with the prior art, the above technical solution of the present invention has the following beneficial technical effects:

[0035] The utility model provides a vibration component and a dust cleaning component in the filter box. When the filter screen needs to be cleaned, it is only necessary to turn on the driving motor and the vibration component will vibrate the filter screen to make the dust and other particles attached to the filter screen fall off. At the same time, the dust sweeping brush rotates along the filter screen to further clean the filter screen, which greatly extends the maintenance and cleaning cycle of the filter box. There is no need to disassemble the filter screen for manual cleaning, which not only reduces the workload of maintenance personnel, but also improves the efficiency of filter screen cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 A perspective view of an embodiment of the present invention;

[0037] Figure 2 This is a cross-sectional view of a filter mechanism in an embodiment of the present invention;

[0038] Figure 3 For this utility model Figure 2 A partial enlarged view of point A in the middle;

[0039] Figure 4For this utility model Figure 2 A partial enlarged view of point B in the middle;

[0040] Figure 5 This is a three-dimensional diagram of a dust sweeping assembly in an embodiment of the present invention.

[0041] Figure markings: 1. Mounting base; 2. Filter mechanism; 21. Filter box; 22. Filter screen; 23. Drive assembly; 231. Drive motor; 232. Drive shaft; 24. Vibrating assembly; 241. Cam; 242. Support plate; 243. Transmission rod; 244. Force plate; 245. Vibrating plate; 246. Return spring; 25. Dust sweeping assembly; 251. Support frame; 252. Mounting shaft; 253. Mounting plate; 254. Dust sweeping brush; 255. Mounting ring; 256. Preload spring; 257. Transmission assembly; 2571. Transmission shaft; 2572. First bevel gear; 2573. Second bevel gear; 3. Inlet pipe; 4. Heat recovery box; 5. Desulfurization tower; 6. Ash discharge pipe. DETAILED DESCRIPTION

[0042] Example 1

[0043] like Figure 1-5 As shown, the utility model proposes a boiler flue gas purification system, including a mounting base 1, a filtering mechanism 2, a heat recovery box 4 and a desulfurization tower 5;

[0044] An ash discharge pipe 6 is provided on one side of the filter box 21, and an ash discharge valve is provided on the ash discharge pipe 6;

[0045] The filter mechanism 2 is arranged on the mounting base 1, and the filter mechanism 2 is communicated with the air inlet pipe 3. The filter mechanism 2 includes a filter box 21, a filter screen 22, a drive assembly 23, a rapping assembly 24 and an ash sweeping assembly 25. The filter box 21 is fixedly connected to the mounting base 1 through a supporting leg, the filter box 21 is communicated with the air inlet pipe, the filter screen 22 is located in the filter box 21, the filter screen 22 is detachably connected to the filter box 21, one end of the drive assembly 23 is connected to the filter box 21, and the other end of the drive assembly 23 extends into the filter box 21. The rapping assembly 24 is provided with two groups, and the two groups of rapping assemblies 24 are both arranged in the filter box 21. One end of the rapping assembly 24 is transmission-connected to the output end of the drive assembly 23, and the ash sweeping assembly 25 is arranged in the filter box 21. The working end of the ash sweeping assembly 25 contacts the filter screen 22, and one end of the ash sweeping assembly 25 is transmission-connected to the drive assembly 23;

[0046] The heat recovery box 4 is arranged on the mounting base 1 and is located at the outlet of the filter box 21. The heat recovery box 4 is connected to the filter box 21 through a connecting pipe.

[0047] The desulfurization tower 5 is arranged on the mounting base 1 . The desulfurization tower 5 is located at the outlet of the heat recovery box 4 . The desulfurization tower 5 is connected to the heat recovery box 4 through a connecting pipe.

[0048] Example 2

[0049] like Figure 1-4 As shown, the boiler flue gas purification system proposed by the present invention, compared with the first embodiment, this embodiment further specifically discloses the structure of the drive assembly 23; the drive assembly 23 includes a drive motor 231 and a drive shaft 232;

[0050] The driving motor 231 is provided on the filter box 21. The driving motor 231 is a variable frequency motor and is connected to the control system and the power supply through a wire.

[0051] One end of the driving shaft 232 is drivingly connected to the output end of the driving motor 231 , and the other end of the driving shaft 232 passes through the filter box 21 and extends into the filter box 21 .

[0052] Example 3

[0053] like Figure 1-3 As shown, the boiler flue gas purification system proposed by the present invention, compared with the second embodiment, this embodiment further specifically discloses the structure of the rapping assembly 24; each set of rapping assemblies 24 includes a cam 241, a support plate 242, a transmission rod 243, a force plate 244, a rapping plate 245 and a return spring 246;

[0054] The cam 241 is fixedly connected to the drive shaft 232;

[0055] The support plate 242 is fixedly connected to the filter box 21;

[0056] The transmission rod 243 is disposed on the support plate 242 , and the transmission rod 243 passes through the support plate 242 and is slidably connected to the support plate 242 ;

[0057] The force-bearing plate 244 is fixedly connected to the transmission rod 243 , and the force-bearing plate 244 is in contact with the cam 241 ;

[0058] The rapping plate 245 is fixedly connected to the transmission rod 243;

[0059] One end of the return spring 246 is fixedly connected to the support plate 242 , and the other end of the return spring 246 is fixedly connected to the force-bearing plate 244 .

[0060] Example 4

[0061] like Figure 1-5As shown, the boiler flue gas purification system proposed by the present invention, compared with the third embodiment, this embodiment further specifically discloses the structure of the dust sweeping assembly 25; the dust sweeping assembly 25 includes a support frame 251, a mounting shaft 252, a mounting plate 253, a dust sweeping brush 254, a mounting ring 255, a preload spring 256 and a transmission assembly 257;

[0062] The support frame 251 is located in the filter box 21, and the support frame 251 is fixedly connected to the filter box 21;

[0063] The mounting shaft 252 is rotatably connected to the support frame 251;

[0064] The mounting plate 253 is sleeved on the mounting shaft 252, and the mounting plate 253 is slidably connected to the mounting shaft 252;

[0065] There are multiple dust sweeping brushes 254, and each of the multiple dust sweeping brushes 254 is fixedly connected to the mounting plate 253;

[0066] The mounting ring 255 is sleeved on the mounting shaft 252, and the mounting plate 253 is rotatably connected to the support frame 251;

[0067] There are multiple pre-tightening springs 256 , one end of each of the pre-tightening springs 256 is fixedly connected to the mounting ring 255 , and the other end of each of the pre-tightening springs 256 is fixedly connected to the mounting plate 253 ;

[0068] One end of the transmission assembly 257 is connected to the mounting shaft 252 , and the other end of the transmission assembly 257 is connected to the drive shaft 232 ;

[0069] The transmission assembly 257 includes a transmission shaft 2571, a first bevel gear 2572 and a second bevel gear 2573;

[0070] The transmission shaft 2571 is connected to the installation shaft 252, and the transmission shaft 2571 passes through the filter screen 22 and is rotatably connected to the filter screen 22;

[0071] The first bevel gear 2572 is fixedly connected to the transmission shaft 2571;

[0072] The second bevel gear 2573 is connected to the driving shaft 232 , and the second bevel gear 2573 and the first bevel gear 2572 are meshed with each other.

[0073] The flue gas enters the filter box 21 through the air intake pipe 3, passes through the filter screen 22 to filter out solid impurities, and then enters the heat recovery box 4. The heat recovery box 4 recovers the heat carried in the flue gas, and the flue gas that has undergone heat exchange enters the desulfurization tower 5 for desulfurization purification and is discharged after meeting the emission standards. After the filter mechanism 2 has been working for a period of time, the drive motor 231 is turned on through the control panel. The drive motor 231 drives the cam 241 and the second bevel gear 2573 to rotate together through the drive shaft 232. The cam 241 rotates through the force plate 244, the transmission rod 243 and the vibration plate 245 to vibrate the filter screen 22, so that the dust and other particles attached to the filter screen 22 can fall off. The rotation of the first bevel gear 2572 drives the transmission shaft 2571 and the installation shaft 252 to rotate together through the meshing action. The rotation of the installation shaft 252 drives the installation ring 255, the installation plate 253 and the dust sweeping brush 254 to rotate together, and the dust sweeping brush 254 rotates to further clean the filter screen 22.

[0074] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Various changes can be made within the knowledge scope of those skilled in the art without departing from the purpose of the present invention.

Claims

1. A boiler flue gas purification system, characterized in that: include: Installing the base (1); A filter mechanism (2) is provided on a mounting base (1), the filter mechanism (2) is connected to an air inlet pipe (3), the filter mechanism (2) comprises a filter box (21), a filter screen (22), a drive assembly (23), a vibration assembly (24) and a dust sweeping assembly (25), the filter box (21) is connected to the mounting base (1), the filter box (21) is connected to the air inlet pipe, the filter screen (22) is located in the filter box (21), the filter screen (22) is connected to the filter box (21), one end of the drive assembly (23) The utility model is connected to the filter box (21), the other end of the driving assembly (23) extends into the filter box (21), the rapping assembly (24) is provided with two groups, the two groups of rapping assemblies (24) are both arranged in the filter box (21), one end of the rapping assembly (24) is transmission-connected with the output end of the driving assembly (23), the dust sweeping assembly (25) is arranged in the filter box (21), the working end of the dust sweeping assembly (25) contacts the filter screen (22), and one end of the dust sweeping assembly (25) is transmission-connected with the driving assembly (23); A heat recovery box (4) is provided on the mounting base (1), the heat recovery box (4) is located at the outlet of the filter box (21), and the heat recovery box (4) is connected to the filter box (21) via a connecting pipe; A desulfurization tower (5) is arranged on a mounting base (1). The desulfurization tower (5) is located at the outlet of a heat recovery box (4). The desulfurization tower (5) is connected to the heat recovery box (4) via a connecting pipe.

2. A boiler flue gas purification system according to claim 1, characterized in that: The driving assembly (23) includes a driving motor (231) and a driving shaft (232); The driving motor (231) is arranged on the filter box (21); One end of the drive shaft (232) is drivingly connected to the output end of the drive motor (231), and the other end of the drive shaft (232) passes through the filter box (21) and extends into the filter box (21).

3. A boiler flue gas purification system according to claim 2, characterized in that: Each rapping assembly (24) includes a cam (241), a support plate (242), a transmission rod (243), a force-bearing plate (244), a rapping plate (245) and a return spring (246); The cam (241) is connected to the drive shaft (232); The support plate (242) is connected to the filter box (21); The transmission rod (243) is arranged on the support plate (242), and the transmission rod (243) passes through the support plate (242) and is slidably connected to the support plate (242); The force-bearing plate (244) is connected to the transmission rod (243), and the force-bearing plate (244) is in contact with the cam (241); The rapping plate (245) is connected to the transmission rod (243); One end of the return spring (246) is connected to the support plate (242), and the other end of the return spring (246) is connected to the force-bearing plate (244).

4. A boiler flue gas purification system according to claim 2, characterized in that: The dust sweeping assembly (25) includes a support frame (251), a mounting shaft (252), a mounting plate (253), a dust sweeping brush (254), a mounting ring (255), a preload spring (256) and a transmission assembly (257); The support frame (251) is located in the filter box (21), and the support frame (251) is connected to the filter box (21); The mounting shaft (252) is rotatably connected to the support frame (251); The mounting plate (253) is sleeved on the mounting shaft (252), and the mounting plate (253) is slidably connected to the mounting shaft (252); A plurality of dust sweeping brushes (254) are provided, and the plurality of dust sweeping brushes (254) are all connected to the mounting plate (253); The mounting ring (255) is sleeved on the mounting shaft (252), and the mounting plate (253) is rotatably connected to the support frame (251); A plurality of preload springs (256) are provided, one end of each of the plurality of preload springs (256) is connected to the mounting ring (255), and the other end of each of the plurality of preload springs (256) is connected to the mounting plate (253); One end of the transmission assembly (257) is connected to the mounting shaft (252), and the other end of the transmission assembly (257) is connected to the drive shaft (232).

5. A boiler flue gas purification system according to claim 4, characterized in that: The transmission assembly (257) includes a transmission shaft (2571), a first bevel gear (2572) and a second bevel gear (2573); The transmission shaft (2571) is connected to the installation shaft (252), and the transmission shaft (2571) passes through the filter screen (22) and is rotationally connected to the filter screen (22); The first bevel gear (2572) is connected to the transmission shaft (2571); The second bevel gear (2573) is connected to the drive shaft (232), and the second bevel gear (2573) and the first bevel gear (2572) are meshed with each other.

6. The boiler flue gas purification system according to claim 1, characterized in that: An ash discharge pipe (6) is provided on one side of the filter box (21), and an ash discharge valve is provided on the ash discharge pipe (6).

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