Dedusting and purifying equipment for thermal power generation

Abstract

The invention discloses dedusting and purifying equipment for thermal power generation, and belongs to the field of purifying equipment.The dedusting and purifying equipment 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, and a supporting frame is arranged in the filter bag; a mounting plate and an L-shaped plate are fixedly connected to the interior of the machine body, and a motor is fixedly connected to the outer wall of the mounting plate A. According to the design, a motor drives a transmission shaft to rotate, a bevel gear A and a bevel gear B are driven to be meshed, so that a threaded rod and a filter disc can move together, dust attached to the surface of a filter bag can be effectively shaken off in cooperation with the vibration effect of a knocking rod, and the dust removal efficiency is improved; and the movement range of the filter disc can be adjusted, it is ensured that the filter disc is effectively knocked by the knocking rod at the appropriate height, and the dust removal efficiency is further optimized.

Description

Technical Field

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

[0002] When a thermal power plant burns coal or other fuels, a large amount of dust, flue gas, and other harmful gases will be generated, resulting in air pollution. Therefore, in order to meet environmental protection requirements, thermal power plants usually need to be equipped with dust removal and purification equipment. The main function of these equipment is to remove particulate matter in the flue gas, reduce the emission of harmful gases, and ensure environmental quality.

[0003] For example, the Chinese patent publication number is CN110960934A, and the technical solution disclosed in this patent document is as follows: An environmentally friendly exhaust system for a boiler in a thermal power plant that can remove dust, the structure of which includes a boiler dust removal device, a gas drum, a fan, an ash discharge hopper, an intake pipe, and an exhaust pipe. The boiler dust removal device is composed of a body, a blowing pipe, a first flower plate, a dust removal mechanism, a connecting rod, and a second flower plate. The boiler dust removal device uses the second flower plate to allow the gas with a large amount of dust to enter only through the holes at the bottom end of the filter bag frame. The servo motor drives the worm rod to control the operation of the dust blocking mechanism. The dust blocking mechanism uses the blades on the filter disk to improve the propulsion of the air flow, so that the filter disk rotates rapidly to intercept dust, and the gas with a large amount of dust is purified for the first time. Then, the fixed frame collides with the dust blocking mechanism to make the dust collected by the dust blocking mechanism break away and fall into the ash discharge hopper, improving the efficiency of dust purification. Finally, the gas drum cooperates with the blowing pipe to perform the final purification treatment on the gas.

[0004] The following problems exist in the prior art: The above device collides with the filter disk by pushing the positioning sliding disk to collide with the filter disk to achieve the effect of dust detachment. Since the filter disk rises at a constant speed, the positioning sliding disk is also pushed at a constant speed. Therefore, its impact force is not sufficient to achieve the effect of dust detachment. Moreover, there is always an upward wind blowing from the bottom to the top inside the filter bag. Therefore, the dust will be subject to greater resistance when descending. Again, if the dust needs to fall into the inside of the ash discharge hopper, there needs to be a channel for the dust to fall. If the channel is always open, then the air to be filtered cannot all enter the inside of the filter bag. Summary of the Invention

[0005] In view of the deficiencies of the prior art, the present invention provides a dust removal and purification equipment for thermal power generation, which solves the problems raised in the above background art.

[0006] To achieve the above-mentioned purpose, the present application provides a dust removal and purification equipment for thermal power generation, including a body, the outer wall of the body is fixedly connected to a support frame, the interior of the body is provided with an air intake duct and a filter element, the interior of the body is fixedly connected to a mounting plate and an L-shaped plate, the outer wall of the mounting plate A is fixedly connected to a motor, the output end of the motor is fixedly connected to a transmission shaft, the other end of the transmission shaft is fixedly connected to a bevel gear A, the inner wall of the air intake duct is fixedly connected to a mounting block, the upper end of the mounting block is rotatably connected to a threaded rod, the top of the threaded rod is fixedly connected to a bevel gear B, the outer wall of the transmission shaft is provided with a transmission part, the outer wall of the mounting plate is rotatably connected to a rotating shaft A, the other end of the rotating shaft A is fixedly connected to a toggle plate, the outer wall of the L-shaped plate is rotatably connected to a connecting rod A through a pin shaft, the other end of the connecting rod A is rotatably connected to a connecting rod B through a pin shaft, the other end of the connecting rod B is hinged to a knocking rod, the outer wall of the connecting rod A is fixedly connected to a baffle rod, and the interior and upper end of the air intake duct are equipped with an opening and closing component and a closing component.

[0007] Preferably, a limit block is fixedly sleeved on the outer wall of the knocking rod, a spring A is fixedly connected to the upper end of the limit 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 fixed sleeve is arranged 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 transmission-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 arranged at the upper end of the air intake pipe, and a support frame is arranged inside the filter bag.

[0008] Preferably, the bevel gear A is meshed with the bevel gear B, and the knocking rod slides through the L-shaped plate.

[0009] Preferably, a filter plate is threadedly connected to the outer wall of the threaded rod, the bottom of the filter bag is connected to the air inlet duct, a fan and an air bag are arranged on the outside of the body, and an ash discharge hopper is arranged at the bottom of the body.

[0010] Preferably, the closing component includes a movable plate, which is fixedly connected to the outer wall of the steel belt, and the side wall of the machine body is fixedly connected to a hydraulic compartment, and hydraulic rod A and hydraulic rod B are slidably connected inside the two ports of the hydraulic compartment, the top of the hydraulic rod A is fixedly connected to a pressure plate, and the bottom of the hydraulic rod B is fixedly connected to a closing plate.

[0011] Preferably, a spring B is fixedly connected between the hydraulic compartment and the pressure plate, and the bottom of the closing plate slides through the upper end of the air intake duct.

[0012] Preferably, the opening and closing assembly includes an ash inlet, which is opened 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 the other end of the connecting rod C is hinged to a connecting plate. A baffle is fixedly connected to the side surface of the connecting plate.

[0013] Preferably, the connecting plate and the baffle are slidably connected inside the air inlet pipe, and the size of the baffle is larger than that of the ash inlet.

[0014] The advantages of this application are as follows: (1) In this design of this application, the motor drives the transmission shaft to rotate, driving the meshing of bevel gear A and bevel gear B, so that the threaded rod and the filter disc can move together. With the vibration of the knocking 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 the connecting rod system, the movement range of the filter disc can be adjusted to ensure that when at an appropriate height, the knocking rod can effectively knock it, further optimizing the dust removal efficiency.

[0015] (2) The closing assembly of this application can effectively control the opening and closing of the air inlet pipe through the cooperation of the hydraulic system, preventing the dust from failing to fall smoothly due to the influence of wind force during the dust removal process. This avoids the problem of dust retention caused by air flow fluctuations. When the hydraulic rod A pushes the pressing plate and the closing plate, the air inlet pipe can be closed, ensuring that the dust can fall smoothly downward after being knocked without being affected by the wind force, optimizing the dust cleaning effect.

[0016] (3) The opening and closing assembly of this application realizes the 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 avoids the escape of gas from the ash discharge hopper before the dust is knocked. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting a part of this application are used to provide a further understanding of this application, making other features, objectives and advantages of this application more obvious. The schematic embodiments and descriptions of the drawings of this application are used to explain this application and do not constitute an improper limitation to this application. In the drawings: Figure 1 is the overall structural schematic diagram of the present invention; Figure 2 is the front sectional structural schematic diagram of the present invention; Figure 3 is the top sectional structural schematic diagram of the present invention; Figure 4 is of the present invention Figure 3 the enlarged structural schematic diagram at A in; Figure 5 is the side sectional structural schematic diagram of the present invention; Figure 6 is the Figure 5 schematic enlarged structure view at position B in the present invention; Figure 7 is the schematic partial sectional structure view of the present invention.

[0018] In the above figures, 1. Machine body; 2. Support frame; 3. Intake pipeline; 41. Filter bag; 42. Support frame; 5. Mounting plate; 51. Motor; 52. Transmission shaft; 53. Bevel gear A; 54. Mounting block; 55. Threaded rod; 56. Bevel gear B; 57. Driving wheel A; 58. Steel belt; 59. Driving wheel B; 510. Rotating shaft A; 511. L-shaped plate; 512. Connecting rod A; 513. Connecting rod B; 514. Knocking rod; 515. Dialing plate; 516. Stop rod; 518. Limiting 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. Pressing 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 bag; 10. Ash discharge hopper. Detailed implementation manners

[0019] In order to enable those skilled in the art of the present technology to better understand the solution of this application, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of this application.

[0020] It should be noted that the terms "first", "second", etc. in the description and claims of this application and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily need to be used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so as to describe the embodiments of this application here. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device including a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0021] In this application, the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", etc. is based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe this application and its embodiments, and are not used to limit that the indicated device, element, or component must have a specific orientation, or be constructed and operated in a specific orientation.

[0022] Moreover, in addition to being used to represent the orientation or positional relationship, some of the above terms may also be used to represent other meanings. For example, the term "upper" may also be used to represent a certain attachment relationship or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.

[0023] In addition, the terms "mounted", "arranged", "provided with", "connected", "linked", "socketed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or there can be internal communication between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0024] It should be noted that, without conflict, the embodiments in this application and the features in the embodiments can be combined with each other. The following will refer to the drawings and combine with embodiments to detail this application.

[0025] Example 1, please refer to Figures 1 - 7The present 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, which is used to fix the body 1 and provide external support, enhance the stability of the equipment, and reduce the impact of vibration on the internal precision parts. The body 1 is provided with an air intake pipe 3 and a filter element inside. The air intake pipe 3 is used to introduce the dust-containing gas generated by the boiler into the dust removal device. The air intake pipe 3 is connected to the filter bag 41 and is the entrance of the air flow into the purification system. The body 1 is fixedly connected with a mounting plate 5 and an L-shaped plate 511 inside. The outer wall of the mounting plate A5 is fixedly connected with a motor 51, and the output end of the motor 51 is fixedly connected with a transmission shaft 52, and the other end of the transmission shaft 52 is fixedly connected with a bevel gear A53. The inner wall of the air intake pipe 3 is fixedly connected with a mounting block 54, and the upper end of the mounting block 54 is rotatably connected with a threaded rod 55, and the top of the threaded rod 55 is fixedly connected with a bevel gear B56. The outer wall of the transmission shaft 52 is provided with a transmission part, and the outer wall of the mounting plate 5 is rotatably connected with a rotating shaft A510 The other end of the rotating shaft A510 is fixedly connected with a toggle plate 515, the outer wall of the L-shaped plate 511 is rotatably connected with a connecting rod A512 through a pin shaft, the other end of the connecting rod A512 is rotatably connected with a connecting rod B513 through a pin shaft, and the other end of the connecting rod B513 is hinged with a knocking rod 514, which moves upward or downward after being driven by the toggle plate 515, and finally knocks on the filter disc 520, vibrates the surface of the filter bag 41, and helps to shake off the attached dust, the outer wall of the connecting rod A512 is fixedly connected with a blocking rod 516, and the interior and upper end of the air intake duct 3 are equipped with an opening and closing component 7 and a closing component 6.

[0026] The outer wall of the knock rod 514 is fixedly sleeved with a limit block 518, the upper end of the limit block 518 is fixedly connected with a spring A519, the upper end of the spring A519 is fixedly connected with the L-shaped plate 511, the transmission part includes a transmission wheel A57, the transmission wheel 47 is fixedly sleeved on the outside of the transmission shaft 52, the outer wall of the transmission wheel A57 is wound with a steel belt 58, the inner wall of the other side of the steel belt 58 is transmission-connected with a transmission wheel B59, the transmission wheel B59 is fixedly sleeved on the outer wall of the rotating shaft A510, the filter element includes a filter bag 41, the filter bag 41 is arranged at the upper end of the intake pipe 3, and the filter bag 41 is provided with a support frame 42. The bevel gear A53 is meshed with the bevel gear B56, and the knock rod 514 slides through the L-shaped plate 511. The outer wall of the threaded rod 55 is threadedly connected with a filter plate 520 , the bottom of the filter bag 41 is connected to the air inlet duct 3 , a fan 8 and an air bag 9 are arranged outside the machine body 1 , and an ash hopper 10 is arranged at the bottom of the machine body 1 .

[0027] During use, first, the gas generated by the boiler of thermal power generation carries a large amount of dust, and these gases enter the interior of the dust removal body 1 through the air intake pipe 3, and then enter the interior of the filter bag 41, and filter the dust in the air through the filter bag 41 and the filter disc 520. The filtering form and effect of the filter disc 520 here are consistent with those in the comparative case and will not be elaborated here. At the same time, the motor 51 is started to drive the transmission shaft 52 to rotate, and then the bevel gear A53 at the other end of the transmission shaft 52 will also rotate, and then the bevel gear B56 meshing with it will also rotate, and then the threaded rod 55 at the bottom will rotate at the same time and drive the filter disc 520 to rise. At the same time, when the transmission shaft 52 rotates, the transmission wheel A57 on its outside will rotate at the same time, and then the transmission wheel B59 will rotate under the transmission action of its external steel belt 58, and then the rotating shaft A510 will rotate, and then the toggle plate 515 will rotate. When the toggle plate 515 rotates and moves a certain distance, it will The stopper 516 contacts the outer wall of the connecting rod A512, and then the connecting rod A512 can be driven to rotate by the stopper 516, so that the knocking rod 514 can be driven to move upward by the connecting rod B513 at the other end of the connecting rod A512, then the limit block 518 on the outer wall of the knocking rod 514 will also move upward and squeeze the spring A519. When the stopper 516 and the connecting rod A512 rotate to the uppermost end and continue to rotate, the stopper 516 is away from the other side of the toggle plate 515. If there is no limit, then under the action of spring A519, the limit block 518 will be pushed to drive the knocking rod 514 to move downward quickly, thereby knocking the filter plate 520, and the diameter of the transmission wheel A57 is much smaller than the transmission wheel B59. Therefore, after the transmission wheel A57 rotates one circle, the transmission wheel B59 will rotate within a certain range, thereby ensuring that the knocking rod 514 will not knock until the filter plate 520 moves to a height where it can be knocked.

[0028] For example 2, please refer to Figures 1 - 7 The closing assembly 6 includes a movable plate 61, which is fixedly connected to the outer wall of the steel belt 58. The side wall of the machine body 1 is fixedly connected with a hydraulic chamber 62. The two ports of the hydraulic chamber 62 are slidably connected with hydraulic rods A63 and B64. The top of the hydraulic rod A63 is fixedly connected with a pressing plate 66. The bottom of the hydraulic rod B64 is fixedly connected with a closing plate 65. The closing assembly 6 can close or open the air intake duct 3 through the hydraulic system. Its function is to ensure that dust will not fall smoothly due to the influence of wind during the filtering process.

[0029] 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 intake pipe 3 .

[0030] During use, when the steel strip 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 compress the spring B67 and move downward, driving the hydraulic rod A63 at its bottom into the interior of the hydraulic chamber 62. Then, the hydraulic rod B64 at the other port of the hydraulic chamber 62 will move downward, driving the closing plate 65 to move downward, closing the air intake pipe 3, ensuring that the dust can fall downward smoothly after being knocked, and preventing the dust from being unable to fall under the influence of wind. Since the steel strip 58 is wider at the top and narrower at the bottom, after 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, the pressure plate 66 and the hydraulic rod A63 will reset upward, and the hydraulic rod B64 will also drive the closing plate 65 to reset.

[0031] Embodiment 3. Please refer to Figures 1 - 7 , the opening and closing assembly 7 includes an ash inlet 71, which is opened between the air intake pipe 3 and the ash discharge hopper 10. A connecting rod C72 is hinged to the outer wall of the closing plate 65, and the other end of the connecting rod C72 is hinged to a connecting plate 73. 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 intake pipe 3, and the size of the baffle 74 is larger than that of the ash inlet 71. The ash inlet 71 is located between the air intake 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.

[0032] During use, when the closing plate 65 descends, the end of the connecting rod C72 hinged to it will also move downward. Then, the connecting rod C72 will push the connecting plate 73 at its other end to move inwardly into the air intake pipe 3, driving the baffle 74 to move, opening the ash inlet 71, enabling the knocked dust to enter the interior of the ash discharge hopper 10 through the ash inlet 71, ensuring that the ash inlet 71 is in a closed state during the filtration process. Thus, the gas generated by the boiler for thermal power generation will all enter the interior of the filter bag 41 for filtration.

[0033] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes, should be covered by the protection scope of the present invention.

Claims

1. A dust removal and purification device for thermal power generation, comprising a body (1), characterized in that: The outer wall of the machine body (1) is fixedly connected to a support frame (2); an air intake duct (3) and a filter element are arranged inside the machine body (1); a mounting plate (5) and an L-shaped plate (511) are fixedly connected inside the machine body (1); a motor (51) is fixedly connected to the outer wall of the mounting plate A (5); a transmission shaft (52) is fixedly connected to the output end of the motor (51); a bevel gear A (53) is fixedly connected to the other end of the transmission shaft (52); a mounting block (54) is fixedly connected to the inner wall of the air intake duct (3); a threaded rod (55) is rotatably connected to the upper end of the mounting block (54); a bevel gear B (53) is fixedly connected to the top of the threaded rod (55); 56), the outer wall of the transmission shaft (52) is provided with a transmission part, the outer wall of the mounting plate (5) is rotatably connected to a rotating shaft A (510), the other end of the rotating shaft A (510) is fixedly connected to a toggle plate (515), the outer wall of the L-shaped plate (511) is rotatably connected to a connecting rod A (512) via a pin, the other end of the connecting rod A (512) is rotatably connected to a connecting rod B (513) via a pin, the other end of the connecting rod B (513) is hinged to a knocking rod (514), the outer wall of the connecting rod A (512) is fixedly connected to a blocking rod (516), and the interior and upper end of the intake duct (3) are equipped with an opening and closing component (7) and a closing component (6).

2. A dust removal and purification equipment for thermal power generation according to claim 1, characterized in that: The outer wall of the knocking rod (514) is fixedly sleeved with a limit block (518), the upper end of the limit block (518) is fixedly connected to a spring A (519), the upper end of the spring A (519) is fixedly connected to the L-shaped plate (511), the transmission part comprises a transmission wheel A (57), the transmission wheel (47) 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 A (57), the inner wall of the other side of the steel belt (58) is transmission-connected to a transmission wheel B (59), the transmission wheel B (59) is fixedly sleeved on the outer wall of the rotating shaft A (510), and the filter element comprises a filter bag (41), the filter bag (41) is arranged at the upper end of the air intake pipe (3), and a support frame (42) is arranged inside the filter bag (41).

3. The dust removal and purification equipment for thermal power generation according to claim 1, characterized in that: The bevel gear A (53) is meshed with the bevel gear B (56), and the knocking rod (514) slides through the L-shaped plate (511).

4. The dust removal and purification equipment for thermal power generation according to claim 1, characterized in that: The outer wall of the threaded rod (55) is threadedly connected to a filter disc (520); the bottom of the filter bag (41) is in communication with an air intake duct (3); a fan (8) and an air bag (9) are provided outside the machine body (1); and an ash discharge hopper (10) is provided at the bottom of the machine body (1).

5. The dust removal and purification equipment for thermal power generation according to claim 1, characterized in that: The closing assembly (6) comprises a movable plate (61), wherein the movable plate (61) is fixedly connected to the outer wall of the steel belt (58), a hydraulic compartment (62) is fixedly connected to the side wall of the machine body (1), a hydraulic rod A (63) and a hydraulic rod B (64) are slidably connected inside two ports of the hydraulic compartment (62), a pressing plate (66) is fixedly connected to the top of the hydraulic rod A (63), and a closing plate (65) is fixedly connected to the bottom of the hydraulic rod B (64).

6. A dust removal and purification equipment for thermal power generation according to claim 5, characterized in that: A spring B (67) 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).

7. A dust removal and purification equipment for thermal power generation according to claim 6, characterized in that: The opening and closing assembly (7) comprises an ash inlet (71), wherein the ash inlet (71) is provided between the air inlet duct (3) and the ash discharge hopper (10), a connecting rod C (72) is hingedly connected to the outer wall of the closing plate (65), a connecting plate (73) is hingedly connected to the other end of the connecting rod C (72), and a baffle (74) is fixedly connected to the side of the connecting plate (73).

8. The dust removal and purification equipment for thermal power generation according to claim 7, characterized in that: The connecting plate (73) and the baffle plate (74) are slidably connected inside the air inlet duct (3), and the size of the baffle plate (74) is larger than the size of the ash inlet port (71).

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