A dust removal and purification device for thermal power generation

Abstract

The application discloses a dust removal and purification equipment for thermal power generation, and belongs to the field of purification equipment, which comprises a machine body, a supporting frame is fixedly connected to the outer wall of the machine body, an air inlet pipeline is arranged in the machine body, a filter bag is fixedly connected to the upper end of the air inlet pipeline, a supporting frame is arranged in the filter bag, an installation plate and an L-shaped plate are fixedly connected to the inside of the machine body, and the outer wall of the installation plate A is fixedly connected with a motor. The design can drive the transmission shaft to rotate through the motor, drive the bevel gear A and the bevel gear B to mesh, make the threaded rod and the filter disc move together, cooperate with the vibration of the knocking rod, effectively shake off the dust attached to the surface of the filter bag, improve the dust removal efficiency, adjust the movement range of the filter disc through the design of the transmission shaft and the connecting rod system, ensure that the knocking rod effectively knocks it at the appropriate height, and further optimize the dust removal efficiency.

Description

Technical Field

[0001] This application relates to the field of purification equipment, and more specifically, to a dust removal and purification device for thermal power generation. Background Technology

[0002] Thermal power plants generate large amounts of dust, flue gas, and other harmful gases when burning coal or other fuels, leading to air pollution. Therefore, to meet environmental protection requirements, thermal power plants typically need to be equipped with dust removal and purification equipment. The main function of this equipment is to remove particulate matter from the flue gas, reduce the emission of harmful gases, and protect environmental quality.

[0003] For example, Chinese Patent Publication No. CN110960934A discloses the following technical solution: A dust-removable environmentally friendly exhaust system for boilers in thermal power plants. Its structure includes a boiler dust removal device, an air tank, a fan, an ash hopper, an inlet pipe, and an exhaust pipe. The boiler dust removal device consists of a body, a blower pipe, a first tube sheet, a dust removal mechanism, a connecting rod, and a second tube sheet. The second tube sheet allows gas carrying a large amount of dust to enter only through the bottom hole of the filter bag frame. A servo motor drives a worm gear to control the dust-blocking mechanism. The dust-blocking mechanism uses blades on the filter disc to increase the airflow, causing the filter disc to rotate rapidly and intercept dust, thus performing the first purification of the gas carrying a large amount of dust. Then, in conjunction with a fixed frame colliding with the dust-blocking mechanism, the dust collected by the dust-blocking mechanism detaches and falls into the ash hopper, improving the efficiency of dust purification. Finally, the air tank, in conjunction with the blower pipe, performs the final purification treatment on the gas.

[0004] The existing technology has the following problems:

[0005] The aforementioned device collides with the filter disc by pushing the positioning slide to collide with the filter disc, thereby achieving the effect of dust removal. However, since the filter disc rises at a constant speed, the positioning slide is also pushed at a constant speed. Therefore, the impact force is insufficient to achieve the effect of dust removal. Furthermore, there is always air blowing upwards from the bottom inside the filter bag, so the dust will encounter significant resistance as it falls. Additionally, if the dust is to fall into the ash discharge hopper, there needs to be a channel for the dust to fall. If the channel is always open, the air to be filtered cannot all enter the filter bag. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides a dust removal and purification device for thermal power generation, which solves the problems mentioned in the background section.

[0007] To achieve the above objectives, this application provides a dust removal and purification device for thermal power generation, including a body. A support frame is fixedly connected to the outer wall of the body. An air intake pipe and a filter are provided inside the body. An mounting plate and an L-shaped plate are fixedly connected inside the body. A motor is fixedly connected to the outer wall of the mounting plate A. A drive shaft is fixedly connected to the output end of the motor. A bevel gear A is fixedly connected to the other end of the drive shaft. An mounting block is fixedly connected to the inner wall of the air intake pipe. A threaded rod is rotatably connected to the upper end of the mounting block. A bevel gear B is fixedly connected to the top of the threaded rod. A transmission part is provided on the outer wall of the drive shaft. A rotating shaft A is rotatably connected to the outer wall of the mounting plate. A toggle plate is fixedly connected to the other end of the rotating shaft A. A connecting rod A is rotatably connected to the outer wall of the L-shaped plate via a pin. A connecting rod B is rotatably connected to the other end of the connecting rod A via a pin. A striking rod is hinged to the other end of the connecting rod B. A stop bar is fixedly connected to the outer wall of the connecting rod A. An opening and closing assembly and a closing assembly are provided inside and at the upper end of the air intake pipe.

[0008] Preferably, a limiting block is fixedly sleeved on the outer wall of the striking rod, and a spring A is fixedly connected to the upper end of the limiting block. The upper end of the spring A is fixedly connected to the L-shaped plate. The transmission part includes a transmission wheel A, which is fixedly sleeved on the outside of the transmission shaft. A steel belt is wound around the outer wall of the transmission wheel A, and a transmission wheel B is drivenly connected to the inner wall of the other side of the steel belt. The transmission wheel B is fixedly sleeved on the outer wall of the rotating shaft A. The filter element includes a filter bag, which is disposed at the upper end of the air inlet pipe. A support frame is provided inside the filter bag.

[0009] Preferably, the bevel gear A meshes with the bevel gear B, and the striking rod slides through the L-shaped plate.

[0010] Preferably, the outer wall of the threaded rod is threaded with a filter disc, the bottom of the filter bag is connected to the air inlet pipe, a fan and an air tank are provided on the outside of the machine body, and a dust discharge hopper is provided at the bottom of the machine body.

[0011] Preferably, the enclosed assembly includes a movable plate, which is fixedly connected to the outer wall of the steel belt. A hydraulic chamber is fixedly connected to the side wall of the machine body. Hydraulic rods A and B are slidably connected inside the two ports of the hydraulic chamber. A pressure plate is fixedly connected to the top of hydraulic rod A, and a closing plate is fixedly connected to the bottom of hydraulic rod B.

[0012] Preferably, a spring B is fixedly connected between the hydraulic chamber and the pressure plate, and the bottom of the closing plate slides through the upper end of the air intake pipe.

[0013] Preferably, the opening and closing assembly includes an ash inlet, which is located between the air inlet pipe and the ash discharge hopper. A connecting rod C is hinged to the outer wall of the closing plate, and a connecting plate is hinged to the other end of the connecting rod C. A baffle is fixedly connected to the side of the connecting plate.

[0014] Preferably, the connecting plate and the baffle are slidably connected inside the air intake pipe, and the size of the baffle is larger than the size of the ash inlet.

[0015] The advantages of this application are:

[0016] (1) The design of this application drives the transmission shaft to rotate by a motor, which drives the bevel gear A and bevel gear B to mesh, so that the threaded rod and the filter disc can move together. Combined with the vibration of the striking rod, the dust attached to the surface of the filter bag can be effectively shaken off, improving the dust removal efficiency. Through the design of the transmission shaft and linkage system, the movement range of the filter disc can be adjusted to ensure that the striking rod effectively strikes it at an appropriate height, further optimizing the dust removal efficiency.

[0017] (2) The sealing component of this application, in cooperation with the hydraulic system, can effectively control the opening and closing of the air intake pipe, preventing dust from failing to fall smoothly due to wind force during the dust removal process. This avoids the problem of dust retention caused by airflow fluctuations. When the hydraulic rod A pushes the pressure plate and the closing plate, the air intake pipe can be closed, ensuring that the dust can fall smoothly downwards after being knocked down, without being affected by wind force, thus optimizing the dust removal effect.

[0018] (3) The opening and closing assembly of this application achieves precise opening and closing control of the ash inlet through the design of the ash inlet, connecting rod C and baffle. In this way, the filtered dust can smoothly enter the ash discharge hopper without leakage, and at the same time, it prevents the gas from escaping from the ash discharge hopper before the dust is knocked. Attached Figure Description

[0019] The accompanying drawings, which form part of this application, are used to provide a further understanding of the application and to make other features, objects, and advantages of the application more apparent. The illustrative embodiments and descriptions of this application are used to explain the application and do not constitute an undue limitation of the application. In the drawings:

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is a front cross-sectional view of the present invention;

[0022] Figure 3 This is a top cross-sectional view of the present invention;

[0023] Figure 4 This is the invention Figure 3Enlarged structural diagram at point A in the middle;

[0024] Figure 5 This is a side cross-sectional view of the present invention;

[0025] Figure 6 This is the invention Figure 5 Enlarged structural diagram at point B;

[0026] Figure 7 This is a partial cross-sectional structural schematic diagram of the present invention.

[0027] In the above image,

[0028] 1. Body; 2. Support frame; 3. Intake pipe; 41. Filter bag; 42. Support frame; 5. Mounting plate; 51. Motor; 52. Drive shaft; 53. Bevel gear A; 54. Mounting block; 55. Threaded rod; 56. Bevel gear B; 57. Drive wheel A; 58. Steel belt; 59. Drive wheel B; 510. Rotating shaft A; 511. L-shaped plate; 512. Connecting rod A; 513. Connecting rod B; 514. Striking rod; 51 5. Actuating plate; 516. Stop bar; 518. Limit block; 519. Spring A; 520. Filter disc; 6. Sealing assembly; 61. Movable plate; 62. Hydraulic chamber; 63. Hydraulic rod A; 64. Hydraulic rod B; 65. Closing plate; 66. Pressure plate; 67. Spring B; 7. Opening and closing assembly; 71. Ash inlet; 72. Connecting rod C; 73. Connecting plate; 74. Baffle; 8. Fan; 9. Air tank; 10. Ash discharge hopper. Detailed Implementation

[0029] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are merely some, not all, of the embodiments of the present application. All other embodiments obtained by those skilled in the art based on the embodiments of the present application without creative effort should fall within the scope of protection of the present application.

[0030] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be used interchangeably where appropriate for the purposes of describing embodiments of this application herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0031] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0032] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0033] Furthermore, the terms "installation," "setup," "equipped with," "connection," "linking," and "socketing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0034] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0035] Example 1, please refer to Figures 1-7This embodiment provides a dust removal and purification device for thermal power generation, including a body 1. A support frame 2 is fixedly connected to the outer wall of the body 1 to fix the body 1 and provide external support, enhancing the stability of the device and reducing the impact of vibration on internal precision components. An air inlet pipe 3 and a filter are provided inside the body 1. The air inlet pipe 3 is used to introduce dust-laden gas generated by the boiler into the dust removal device. The air inlet pipe 3 is connected to the filter bag 41 and is the inlet for airflow into the purification system. An mounting plate 5 and an L-shaped plate 511 are fixedly connected inside the body 1. A motor 51 is fixedly connected to the outer wall of the mounting plate 55. A drive shaft 52 is fixedly connected to the output end of the motor 51. A bevel gear A53 is fixedly connected to the other end of the drive shaft 52. An mounting block 54 is fixedly connected to the inner wall of the air inlet pipe 3. A threaded rod 55 is rotatably connected to the upper end of the mounting block 54. A bevel gear B56 is fixedly connected to the top of the threaded rod 55. A transmission part is provided on the outer wall of the drive shaft 52. A rotating shaft A510 is rotatably connected to the outer wall of the mounting plate 5. The other end of the rotating shaft A510 is fixedly connected to a toggle plate 515. The outer wall of the L-shaped plate 511 is rotatably connected to a connecting rod A512 via a pin. The other end of the connecting rod A512 is rotatably connected to a connecting rod B513 via a pin. The other end of the connecting rod B513 is hinged to a striking rod 514. After being driven by the toggle plate 515, it moves up or down and finally strikes the filter disc 520, vibrating the surface of the filter bag 41 and helping to shake off the attached dust. The outer wall of the connecting rod A512 is fixedly connected to a stop bar 516. The inside and upper end of the air intake pipe 3 are equipped with an opening and closing assembly 7 and a closing assembly 6.

[0036] A limiting block 518 is fixedly sleeved on the outer wall of the striking rod 514. A spring A519 is fixedly connected to the upper end of the limiting block 518. The upper end of the spring A519 is fixedly connected to the L-shaped plate 511. The transmission part includes a transmission wheel A57, which is fixedly sleeved on the outside of the transmission shaft 52. A steel belt 58 is wound around the outer wall of the transmission wheel A57. A transmission wheel B59 is drivenly connected to the inner wall of the other side of the steel belt 58. The transmission wheel B59 is fixedly sleeved on the outer wall of the rotating shaft A510. The filter element includes a filter bag 41, which is set at the upper end of the air inlet pipe 3. A support frame 42 is set inside the filter bag 41. The bevel gear A53 meshes with the bevel gear B56, and the striking rod 514 slides through the L-shaped plate 511. The outer wall of the threaded rod 55 is threaded with a filter disc 520, the bottom of the filter bag 41 is connected to the air inlet pipe 3, the outside of the body 1 is equipped with a fan 8 and an air tank 9, and the bottom of the body 1 is equipped with a dust discharge hopper 10.

[0037] In operation, the gas produced by the boiler of the thermal power plant carries a large amount of dust. This gas enters the dust collector body 1 through the air inlet pipe 3, then enters the filter bag 41, and is filtered by the filter bag 41 and the filter disc 520. The filtration method and effect of the filter disc 520 are the same as in the comparative case, and will not be described here. At the same time, the motor 51 is started to drive the drive shaft 52 to rotate. The bevel gear A53 at the other end of the drive shaft 52 will also rotate, and the bevel gear B56 meshing with it will also rotate. Consequently, the threaded rod 55 at its bottom will rotate simultaneously, driving the filter disc 520 to rise. Simultaneously, when the drive shaft 52 rotates, the external drive wheel A57 will also rotate, which, under the transmission action of the external steel belt 58, will drive the drive wheel B59 to rotate, causing the rotating shaft A510 to rotate, which in turn drives the actuating plate 515 to rotate. After the actuating plate 515 rotates and moves a certain distance, it will... The stop lever 516 on the outer wall of the connecting rod A512 contacts the stop lever 516, which then drives the connecting rod A512 to rotate. This, in turn, drives the striking lever 514 to move upwards via the connecting rod B513 at the other end of the connecting rod A512. The limiting block 518 on the outer wall of the striking lever 514 also moves upwards and compresses the spring A519. When the stop lever 516 and the connecting rod A512 rotate to their highest point, further rotation causes the stop lever 516 to move away from the actuating plate 515. Without a limit switch, the spring A519 will push the limit block 518 to drive the striking rod 514 to move downwards quickly, thereby striking the filter disc 520. Since the diameter of the transmission wheel A57 is much smaller than that of the transmission wheel B59, the transmission wheel B59 will only rotate within a certain range after the transmission wheel A57 rotates one full turn. This ensures that the striking rod 514 will only strike the filter disc 520 after it has moved to a height where it can be struck.

[0038] Example 2, please refer to Figures 1-7 The sealing assembly 6 includes a movable plate 61, which is fixedly connected to the outer wall of the steel belt 58. A hydraulic chamber 62 is fixedly connected to the side wall of the body 1. Hydraulic rods A63 and B64 are slidably connected inside the two ports of the hydraulic chamber 62. A pressure plate 66 is fixedly connected to the top of hydraulic rod A63, and a closing plate 65 is fixedly connected to the bottom of hydraulic rod B64. The sealing assembly 6 can close or open the air intake pipe 3 through a hydraulic system. Its function is to ensure that dust does not fail to fall smoothly due to wind force during the filtration process.

[0039] A spring B67 is fixedly connected between the hydraulic chamber 62 and the pressure plate 66, and the bottom of the closing plate 65 slides through the upper end of the air intake pipe 3.

[0040] In use, when the steel belt 58 rotates, the movable plate 61 fixedly connected to its outer wall will move accordingly. When the movable plate 61 moves to the other side, it will contact the pressure plate 66, thereby pushing the pressure plate 66 to squeeze the spring B67 and move downward. This will drive the hydraulic rod A63 at its bottom into the interior of the hydraulic chamber 62. Then, the hydraulic rod B64 in the other port of the hydraulic chamber 62 will move downward, thereby driving the closing plate 65 to move downward, thus closing the air intake pipe 3. This ensures that dust can fall smoothly downward after being knocked, preventing dust from not falling due to wind. Since the steel belt 58 is wider at the top and narrower at the bottom, when the movable plate 61 pushes the pressure plate 66 down a certain distance, the movable plate 61 will disengage from the pressure plate 66. Then, under the action of the spring B67, both the pressure plate 66 and the hydraulic rod A63 will return to their original positions. The hydraulic rod B64 will also drive the closing plate 65 to return to its original position.

[0041] Example 3, please refer to Figures 1-7 The opening / closing assembly 7 includes an ash inlet 71, which is located between the air inlet pipe 3 and the ash discharge hopper 10. A connecting rod C72 is hinged to the outer wall of the closing plate 65, and a connecting plate 73 is hinged to the other end of the connecting rod C72. A baffle 74 is fixedly connected to the side of the connecting plate 73. The connecting plate 73 and the baffle 74 are slidably connected inside the air inlet pipe 3, and the size of the baffle 74 is larger than the size of the ash inlet 71. The ash inlet 71 is located between the air inlet pipe 3 and the ash discharge hopper 10. The function of the baffle 74 is to control the opening and closing of the ash inlet 71 and prevent dust leakage. By moving the connecting plate 73, the baffle 74 can effectively control the opening or closing of the ash inlet 71.

[0042] In use, when the closing plate 65 descends, the end of the connecting rod C72 that is hinged to it will also move downwards. In turn, the connecting rod C72 will push the connecting plate 73 at its other end to move inwards towards the air inlet pipe 3, thereby causing the baffle 74 to move. This will open the ash inlet 71, allowing the knocked dust to enter the ash discharge hopper 10 from the ash inlet 71. This ensures that the ash inlet 71 is closed during the filtration process, so that all the gas generated by the boiler of the thermal power plant will enter the interior of the filter bag 41 for filtration.

[0043] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A dust removal and purification device for thermal power generation, comprising a body, characterized in that, A support frame is fixedly connected to the outer wall of the machine body. An air intake pipe and a filter are installed inside the machine body. An mounting plate and an L-shaped plate are fixedly connected inside the machine body. A motor is fixedly connected to the outer wall of the mounting plate A. A drive shaft is fixedly connected to the output end of the motor. A bevel gear A is fixedly connected to the other end of the drive shaft. A mounting block is fixedly connected to the inner wall of the air intake pipe. A threaded rod is rotatably connected to the upper end of the mounting block. A bevel gear B is fixedly connected to the top of the threaded rod. A transmission part is provided on the outer wall of the drive shaft. A rotating shaft A is rotatably connected to the outer wall of the mounting plate. A toggle plate is fixedly connected to the other end of the rotating shaft A. A connecting rod A is rotatably connected to the outer wall of the L-shaped plate through a pin. A connecting rod B is rotatably connected to the other end of the connecting rod A through a pin. A striking rod is hinged to the other end of the connecting rod B. A stop bar is fixedly connected to the outer wall of the connecting rod A. A limiting block is fixedly sleeved on the outer wall of the striking rod. A spring A is fixedly connected to the upper end of the limiting block. The upper end of the spring A is fixedly connected to the L-shaped plate. The transmission part includes a transmission wheel A. The transmission wheel A is fixedly sleeved on the outside of the transmission shaft. A steel belt is wound around the outer wall of the transmission wheel A. A transmission wheel B is drivenly connected to the inner wall of the other side of the steel belt. The transmission wheel B is fixedly sleeved on the outer wall of the rotating shaft A. The filter element includes a filter bag. The filter bag is set at the upper end of the air inlet pipe. A support frame is set inside the filter bag. The bevel gear A meshes with the bevel gear B, and the striking rod slides through the L-shaped plate; The outer wall of the threaded rod is threaded with a filter disc, the bottom of the filter bag is connected to the air inlet pipe, a fan and an air tank are installed on the outside of the machine body, and a dust discharge hopper is installed at the bottom of the machine body; The air intake pipe is equipped with an opening and closing assembly and a closing assembly inside and at its upper end. The closing assembly includes a movable plate, which is fixedly connected to the outer wall of the steel strip. A hydraulic chamber is fixedly connected to the side wall of the machine body. Hydraulic rods A and B are slidably connected inside the two ports of the hydraulic chamber. A pressure plate is fixedly connected to the top of hydraulic rod A, and a closing plate is fixedly connected to the bottom of hydraulic rod B. A spring B is fixedly connected between the hydraulic chamber and the pressure plate, and the bottom of the closing plate slides through the upper end of the air intake pipe. The opening and closing assembly includes an ash inlet, which is located between the air inlet pipe and the ash discharge hopper. A connecting rod C is hinged to the outer wall of the closing plate, and a connecting plate is hinged to the other end of the connecting rod C. A baffle is fixedly connected to the side of the connecting plate. The connecting plate and the baffle are slidably connected inside the air intake pipe, and the size of the baffle is larger than the size of the ash inlet.

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