Dust removal device used for thermal power generation boiler and facilitating replacement of dust removal bag

Abstract

The invention discloses a thermal power generation boiler dust removal device facilitating dust removal bag replacement, and belongs to the field of dust removal equipment.The dust removal device comprises an air inlet pipe, a pipeline rotating joint is fixedly connected to the rear end of the air inlet pipe, an air conveying channel is fixedly connected to the rear end of the pipeline rotating joint, and an exhaust pipe is arranged behind the air conveying channel; a sealing plate is fixedly connected to the outer surface of the exhaust pipe, a limiting ring is fixedly connected to the inner surface of the exhaust pipe, a guide ring is rotatably connected to the outer surface of the exhaust pipe, a fixing part is arranged on the front face of the guide ring, a gear part is arranged below the guide ring, and an air bin penetrates through and is fixedly connected to the upper portion of the exhaust pipe. By arranging the air conveying channel, different exhaust pipes can be conveniently switched for air outlet, the dust removal filter bags in the open exhaust pipes can be loosened by switching the exhaust pipes, meanwhile, the dust removal filter bags are pounded out of the exhaust pipes, and the effect of conveniently disassembling the dust removal filter bags is achieved.

Description

Technical Field

[0001] The present application relates to the field of dust removal equipment. Specifically, it relates to a dust removal device for a thermal power generation boiler that facilitates the replacement of dust removal bags. Background Art

[0002] As a filtering device that needs to work for a long time, traditional dust removal equipment generally adopts a structure with a fixed multi-filter bag array. Each filter bag is placed in a single filtering chamber. When the dust in the filter bag accumulates, if maintenance is required, the equipment needs to be shut down, and then the filter bag is disassembled after shutdown. Therefore, production will stop during the filter bag replacement process, affecting the enterprise's benefits.

[0003] The patent document with the publication number CN112138479B discloses a variable air duct dust collector that is easy to maintain. The invention relates to a variable air duct dust collector that is easy to maintain, including an external air duct and a middle connecting air duct. The external air duct includes an air inlet pipe, an air outlet pipe, and a filter pipe group. The middle connecting air duct includes a confluence pipe. The filter pipe group is connected to the confluence pipe in a circular array. The filter pipe group includes a filter pipe housing. An air inlet pipe is provided at one axial end of the filter pipe housing, and a filter bag A is connected to the end of the air inlet pipe. At the other axial end inner wall of the filter housing, an air outlet nozzle is connected, and a valve A is connected to the reduced diameter end of the air outlet nozzle. A connecting pipe for communicating with the confluence pipe is perpendicularly connected to the outer wall of the filter pipe housing. A filter bag B is provided at the end of the connection position between the connecting pipe and the filter pipe housing. An openable inspection cover is also provided on the wall surface of the filter pipe housing. An auxiliary ventilation pipe is also connected between the front air inlet pipe and the air inlet pipe of the second group of filter pipe housings in the array. A valve C is connected to the auxiliary ventilation pipe. In the above application document, the air flow direction is switched through valves A, B, and C, so as to disconnect part of the filter pipe mechanism, and while the filtering equipment is working, the replacement of the dust removal filter bag is realized. However, after switching the air flow direction, it is necessary to open the inspection cover to disassemble the filter bag, and the replacement process is cumbersome. It is not convenient to loosen and fix the filter bag when switching the air flow direction, making it difficult to disassemble the filter bag more quickly and conveniently. Summary of the Invention

[0004] Aiming at the deficiencies of the prior art, the present invention provides a dust removal device for a thermal power generation boiler that facilitates the replacement of dust removal bags, and solves the problems raised in the above background art.

[0005] To achieve the above object, the present application provides a dust removal device for a thermal power generation boiler that facilitates the replacement of dust removal bags, including an air inlet pipe. The rear end of the air inlet pipe is fixedly connected to a pipe rotary joint. The rear end of the pipe rotary joint is fixedly connected to an air delivery channel. A discharge pipe is arranged behind the air delivery channel. A closing plate is fixedly connected to the outer surface of the discharge pipe. A limiting ring is fixedly connected to the inner surface of the discharge pipe. A guiding ring is rotatably connected to the outer surface of the discharge pipe. A fixing member is arranged in front of the guiding ring. A gear member is arranged below the guiding ring. An air chamber penetrates and is fixedly connected to the upper part of the discharge pipe. A first piston rod and a second piston rod are slidably connected to the inner surface of the air chamber. A support rod is fixedly connected to the upper part of the discharge pipe. An elastic sheet is fixedly connected to the top of the inner surface of the support rod. A threaded member is arranged behind the elastic sheet. A dust removal filter bag is arranged on the inner surface of the discharge pipe. A fixing ring is fixedly connected to the front of the dust removal filter bag. A filtering component for further dust removal is assembled on the inner surface of the discharge pipe. A receiving component for receiving the dust removal filter bag is assembled below the discharge pipe.

[0006] Preferably, the fixing member includes a fixing plate. The fixing plate penetrates and is slidably connected to the outer surface of the discharge pipe. A spring is elastically connected between the fixing plate and the outer surface of the discharge pipe. A guiding column is fixedly connected to the rear of the fixing plate. A guiding groove is formed on the front surface of the guiding ring. The guiding column is slidably connected to the inner surface of the guiding groove.

[0007] Preferably, the gear member includes a sliding frame. The sliding frame is fixedly connected to the outer surface of the discharge pipe. A rack is slidably connected to the outer surface of the sliding frame. A first gear is engaged with the lower part of the rack. A connecting column is fixedly connected to the front of the first gear. The connecting column is fixedly connected to the rear of the air delivery channel. A first tooth is engaged with the upper part of the rack. The first tooth is fixedly connected to the outer surface of the guiding ring.

[0008] Preferably, the threaded member includes a pushing plate. The pushing plate is fixedly connected to the rear of the guiding ring. The pushing plate is slidably connected to the outer surface of the discharge pipe. A second tooth is fixedly connected to the upper part of the pushing plate. A second gear is engaged with the upper part of the second tooth. A threaded cylinder is fixedly connected to the front of the second gear. A support sleeve is rotatably connected to the outer surface of the threaded cylinder. The support sleeve is fixedly connected to the upper part of the discharge pipe. A screw rod is threadedly connected to the inner surface of the threaded cylinder. A connecting piece is rotatably connected to the front of the screw rod. A hook seat is fixedly connected to the front of the connecting piece. A first telescopic rod is fixedly connected to the rear of the connecting piece. The first telescopic rod is fixedly connected to the upper part of the support sleeve.

[0009] Preferably, the filtering component includes a filter plate which is inserted below the exhaust duct. A second telescopic rod is fixedly connected above the filter plate, and the second telescopic rod is fixedly connected to the outer surface of the exhaust duct. A guiding plate is fixedly connected to the front of the filter plate, and a leaning rod is slidably connected to the front of the guiding plate. The leaning rod is fixedly connected to the outer surface of the exhaust duct. A support plate is fixedly connected below the exhaust duct, and an elastic telescopic rod is fixedly connected behind the support plate. A brush is fixedly connected to the rear end of the elastic telescopic rod.

[0010] Preferably, the filtering component further includes a first hydraulic chamber which is fixedly connected to the outer surface of the exhaust duct. A first hydraulic rod is fixedly connected to the inner surface of the first hydraulic chamber, and the first hydraulic rod is fixedly connected to the front of a pushing plate. A second hydraulic chamber is fixedly connected to the outer surface of the exhaust duct, and the second hydraulic chamber is connected to the first hydraulic chamber through pipelines. A second hydraulic rod is slidably connected to the inner surface of the second hydraulic chamber, and the second hydraulic rod is fixedly connected above the filter plate.

[0011] Preferably, the receiving component includes a support base which is fixedly connected below the exhaust duct. A fixing rod is fixedly connected to the front of the support base, and a rotating cylinder is rotatably connected to the outer surface of the fixing rod. A torsion spring is elastically connected between the rotating cylinder and the fixing rod. A connecting arm is fixedly connected below the rotating cylinder, and a receiving bag is fixedly connected to the front of the connecting arm.

[0012] Preferably, the receiving component further includes a pushing strip which is fixedly connected to the rear of the connecting arm.

[0013] The advantages of the present application are as follows: (1) By providing an air delivery channel in the present application, it is convenient to switch different exhaust ducts for air outlet. By switching the exhaust ducts, the dust removal filter bag in the opened exhaust duct can be loosened, and at the same time, the dust removal filter bag can be pounded out of the exhaust duct, which has the function of facilitating the disassembly of the dust removal filter bag.

[0014] (2) By arranging a filtering component in the exhaust duct in the present application, it is convenient to add an extra insurance to prevent the influence on the filtering effect due to the rupture of the dust removal filter bag. When switching the exhaust ducts to open them, the filtering component in the corresponding exhaust duct will be pulled out and self-cleaned, which has the function of facilitating the maintenance of the filtering component.

[0015] (3) By arranging a receiving component in the present application to receive the dust removal filter bag pounded out of the exhaust duct, the extraction of the filtering component can drive the receiving component to move to the lower part of the front opening of the exhaust duct, which has the function of facilitating the reception of the dust removal filter bag and preventing the dust removal filter bag from falling after being pounded out. Description of the Drawings

[0016] The drawings constituting a part of this application are used to provide a further understanding of this application, so that other features, purposes and advantages of this application become more obvious. The schematic embodiment drawings and their descriptions of this application are used to explain this application and do not constitute an improper limitation on this application. In the drawings: Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a bottom view of the overall structure of the present invention; Figure 3 It is a right view of the overall structure of the present invention; Figure 4 It is a top view of the overall structure of the present invention; Figure 5 It is a right upward view of the overall structure of the present invention; Figure 6 The present invention Figure 3 A schematic diagram of the structure enlargement in the middle; Figure 7 The present invention Figure 3 A magnified schematic diagram of the structure at B in the middle; Figure 8 The present invention Figure 5 Enlarged schematic diagram of the structure at point C in the middle.

[0017] In the above figure, 1, air inlet pipe; 2, pipe rotary joint; 3, air delivery channel; 4, exhaust pipe; 401, closing plate; 402, limit ring; 403, guide ring; 404, air chamber; 405, first piston rod; 406, second piston rod; 407, bracket rod; 408, elastic sheet; 409, dust filter bag; 410, fixing ring; 5, fixing member; 501, fixing sheet; 502, spring; 503, guide column; 504, guide groove; 6, gear member; 601, sliding frame; 602, rack; 603, first gear; 604, connecting column; 605, first tooth; 7, threaded member; 701, push plate; 702, second tooth; 703, second gear; 704, threaded cylinder; 705, support sleeve; 706, screw rod; 707, connecting piece; 708, hook seat; 709, first telescopic rod; 8, filter assembly; 801, filter plate; 802, second telescopic rod; 803, guide plate; 804, leaning rod; 805, support plate; 806, elastic telescopic rod; 807, brush; 808, first hydraulic bin; 809, first hydraulic rod; 810, second hydraulic bin; 811, second hydraulic rod; 9, receiving assembly; 901, support seat; 902, fixed rod; 903, rotating cylinder; 904, torsion spring; 905, connecting arm; 906, receiving bag; 907, pushing bar. DETAILED DESCRIPTION

[0018] To enable those skilled in the art 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. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in this application without creative efforts shall fall within the protection scope of this application.

[0019] It should be noted that the terms "first", "second", etc. in the specification, claims and above-mentioned drawings of this application are used to distinguish similar objects, and do not have to be used to describe a specific order or sequence. It should be understood that such used data can be interchanged under appropriate circumstances so as to describe the embodiments of this application here. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units does not 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.

[0020] In this application, the orientation or positional relationship indicated by the terms "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 accompanying drawings. These terms are mainly used to better describe this application and its embodiments, and are not used to limit that the indicated devices, elements or components must have a specific orientation, or be constructed and operated in a specific orientation.

[0021] Moreover, in addition to being able to represent an 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.

[0022] In addition, the terms "install", "set", "be provided with", "connect", "be connected", "be sleeved" 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 also 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.

[0023] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments may be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

[0024] Embodiment 1, refer to Figures 1 - 8, this embodiment provides a dust removal device for a thermal power generation boiler that facilitates the replacement of dust removal bags, including an air inlet pipe 1. The air inlet pipe 1 is the input end of the exhaust gas of the thermal power generation boiler. The rear end of the air inlet pipe 1 is fixedly connected to a pipe rotary joint 2. The pipe rotary joint 2 is used to enable the air delivery channel 3 to rotate and adjust. The air delivery channel 3 has a rotation angle limit to facilitate the alignment of the rear end of the air delivery channel 3 with the exhaust pipe 4. The rear end of the pipe rotary joint 2 is fixedly connected to the air delivery channel 3. The air delivery channel 3 has two right-angled bending parts. There is an exhaust pipe 4 behind the air delivery channel 3. The number of exhaust pipes 4 is two. A closing plate 401 is fixedly connected to the outer surface of the exhaust pipe 4. The front surface of the closing plate 401 and the front edge of the exhaust pipe 4 are on the same plane. A limiting ring 402 is fixedly connected to the inner surface of the exhaust pipe 4. The shape of the limiting ring 402 is annular. A guiding ring 403 is rotatably connected to the outer surface of the exhaust pipe 4. The number of guiding rings 403 is two. The guiding ring 403 and the outer surface of the exhaust pipe 4 are rotatably connected through an annular sliding groove. A fixing member 5 is arranged on the front surface of the guiding ring 403. The fixing member 5 includes a fixing piece 501. There is a distance between the fixing piece 501 and the limiting ring 402 for placing the fixing ring 410. The fixing piece 501 penetrates and is slidably connected to the outer surface of the exhaust pipe 4. The shape of the fixing piece 501 is L-shaped. A spring 502 is elastically connected between the fixing piece 501 and the outer surface of the exhaust pipe 4. A guiding column 503 is fixedly connected to the rear of the fixing piece 501. A guiding groove 504 is formed on the front surface of the guiding ring 403. The number of fixing pieces 501, springs 502, guiding columns 503, and guiding grooves 504 on each guiding ring 403 is six. The guiding column 503 is slidably connected to the inner surface of the guiding groove 504. A gear member 6 is arranged below the guiding ring 403. The gear member 6 includes a sliding frame 601. The shape of the sliding frame 601 is C-shaped. The sliding frame 601 is fixedly connected to the outer surface of the exhaust pipe 4. The two ends of the sliding frame 601 are respectively connected to the outer surfaces of the two exhaust pipes 4. A rack 602 is slidably connected to the outer surface of the sliding frame 601. Tooth teeth are arranged on both the upper and lower surfaces of the rack 602. A first gear 603 is meshed with the lower part of the rack 602. A connecting column 604 is fixedly connected to the front surface of the first gear 603. The connecting column 604 is fixedly connected to the rear of the air delivery channel 3. The rotation of the air delivery channel 3 can drive the connecting column 604 to make the first gear 603 rotate. A first tooth 605 is meshed with the upper part of the rack 602. The first tooth 605 is fixedly connected to the outer surface of the guiding ring 403. An air chamber 404 is fixedly connected through and above the exhaust pipe 4. The air chamber 404 has two obtuse-angled corners, so that one end is arranged inside the exhaust pipe 4 and the other end is arranged outside the exhaust pipe 4. A first piston rod 405 and a second piston rod 406 are slidably connected to the inner surface of the air chamber 404. A through hole for accommodating the first piston rod 405 is arranged on the limiting ring 402. A support rod 407 is fixedly connected above the exhaust pipe 4. The shape of the support rod 407 is U-shaped. An elastic piece 408 is fixedly connected to the top of the inner surface of the support rod 407. The material of the elastic piece 408 is metal and has elasticity. A threaded member 7 is arranged behind the elastic piece 408.The threaded member 7 includes a push plate 701, which is L-shaped and is an arc-shaped thin sheet, which is attached to the outer surface of the exhaust pipe 4. The push plate 701 is fixedly connected to the rear of the guide ring 403, and the push plate 701 is slidably connected to the outer surface of the exhaust pipe 4. A second tooth 702 is fixedly connected to the top of the push plate 701, and a second gear 703 is meshed above the second tooth 702. A threaded barrel 704 is fixedly connected to the front of the second gear 703, and a thread matching the screw 706 is arranged in the threaded barrel 704. A support sleeve 705 is rotatably connected to the outer surface of the threaded barrel 704, and a bearing is arranged between the support sleeve 705 and the threaded barrel 704. The threaded barrel 704 can rotate in the support sleeve 705, and the support sleeve 705 is fixedly connected to the top of the exhaust pipe 4. The inner surface of the threaded barrel 704 is threadedly connected to the screw Rod 706, the front of the screw rod 706 is rotatably connected to a connecting piece 707, the front of the connecting piece 707 is fixedly connected to a hook seat 708, the hook seat 708 is made of metal and has a certain elasticity, the rear of the connecting piece 707 is fixedly connected to a first telescopic rod 709, the first telescopic rod 709 is fixedly connected to the top of the support sleeve 705, the inner surface of the exhaust pipe 4 is provided with a dust filter bag 409, the dust filter bag 409 is used to filter dust in the air, which is a prior art, the front of the dust filter bag 409 is fixedly connected to a fixing ring 410, the fixing ring 410 is used to be placed between the fixing piece 501 and the limiting ring 402 to fix the dust filter bag 409 in the exhaust pipe 4, the inner surface of the exhaust pipe 4 is equipped with a filter assembly 8 for further dust removal, and the lower part of the exhaust pipe 4 is equipped with a receiving assembly 9 for receiving the dust filter bag 409. ,

[0025] When the above device is in specific use, first connect the exhaust gas of the thermal power generation boiler to the air inlet pipe 1. The exhaust gas will enter the air delivery channel 3 through the air inlet pipe 1 and the pipe rotary joint 2, and then be transported to the exhaust pipe 4. The dust removal filter bag 409 in the exhaust pipe 4 will filter the dust in the exhaust gas. When a large amount of dust is collected by the dust removal filter bag 409 in the exhaust pipe 4 and affects ventilation, rotate the air delivery channel 3 through the pipe rotary joint 2 so that the air delivery channel 3 is docked with another exhaust pipe 4. At this time, the original exhaust pipe 4 will be opened. The rotation of the air delivery channel 3 will drive the connecting column 604 to rotate the first gear 603. The rotation of the first gear 603 will move the rack 602 to slide on the sliding frame 601. The sliding of the rack 602 will move the first tooth 605 to rotate the guide ring 403 on the exhaust pipe 4. The rotation of the guide ring 403 will drive the guide groove 504 to push the guide post 503, so that the guide post 503 drives the fixing piece 501 to slide. The fixing piece 501 will be pulled outwards, and thus will no longer block the fixing ring 410 between the fixing piece 501 and the limiting ring 402. At this time, with the rotation of the guide ring 403, the pushing plate 701 will slide on the exhaust pipe 4. The pushing plate 701 will drive the second tooth 702 to rotate the second gear 703. The rotation of the second gear 703 will drive the threaded cylinder 704 to rotate in the support sleeve 705. The rotation of the threaded cylinder 704 will drive the screw rod 706 to retract. The screw rod 706 will drive the connecting piece 707 to move towards the threaded cylinder 704 under the limiting action of the first telescopic rod 709. The connecting piece 707 will drive the hook seat 708 to pull the elastic piece 408 to bend. As the elastic piece 408 bends, the lower end thereof will be farther and farther away from the upper surface of the exhaust pipe 4. When the hook seat 708 is pulled to a certain extent, the elastic piece 408 will fall off the hook seat 708. At this time, the elastic piece 408 will release elastic force to strike the second piston rod 406, and then push the first piston rod 405 to protrude forward through the air chamber 404. The first piston rod 405 will protrude from the front of the limiting ring 402, and then push the fixing ring 410 to deflect out of the exhaust pipe 4, so as to facilitate the disassembly of the dust removal filter bag 409.

[0026] Example 2, see Figures 3 - 7, the filtering component 8 includes a filter plate 801. The filter plate 801 is specifically a rigid plug board with through holes provided on the board, and filter meshes are arranged in the through holes. The filter plate 801 is inserted and connected below the exhaust duct 4. The number of the filter plates 801 is two, which are respectively arranged in two exhaust ducts 4. A second telescopic rod 802 is fixedly connected above the filter plate 801. A strip-shaped structure protruding towards both sides is arranged below the filter plate 801. The second telescopic rod 802 is fixedly connected to the outer surface of the exhaust duct 4. A guide plate 803 is fixedly connected to the front surface of the filter plate 801. A support rod 804 is slidably connected to the front surface of the guide plate 803. The number of the guide plates 803 and the support rods 804 on each filter plate 801 is two. The support rod 804 is fixedly connected to the outer surface of the exhaust duct 4. A support plate 805 is fixedly connected below the exhaust duct 4. An elastic telescopic rod 806 is fixedly connected behind the support plate 805. The elastic telescopic rod 806 is in a contracted state under normal conditions. A brush 807 is fixedly connected to the rear end of the elastic telescopic rod 806. The filtering component 8 further includes a first hydraulic chamber 808. The first hydraulic chamber 808 is fixedly connected to the outer surface of the exhaust duct 4. A first hydraulic rod 809 is fixedly connected to the inner surface of the first hydraulic chamber 808. The first hydraulic rod 809 is slidably connected to the first hydraulic chamber 808 through a piston. The shapes of the first hydraulic rod 809 and the first hydraulic chamber 808 are arc-shaped. The first hydraulic rod 809 is fixedly connected to the front surface of the push plate 701. A second hydraulic chamber 810 is fixedly connected to the outer surface of the exhaust duct 4. The second hydraulic chamber 810 is connected to the first hydraulic chamber 808 through pipelines. The second hydraulic chamber 810 is connected and communicated with the first hydraulic chamber 808 through a hose. A second hydraulic rod 811 is slidably connected to the inner surface of the second hydraulic chamber 810. The second hydraulic rod 811 is slidably connected to the second hydraulic chamber 810 through a piston. The second hydraulic rod 811 is fixedly connected to the upper part of the filter plate 801.

[0027] When the device is specifically used, when the rotation of the guide ring 403 drives the push plate 701 to slide on the exhaust duct 4, the push plate 701 will also push the first hydraulic rod 809 to extend into the first hydraulic chamber 808, thereby pushing the liquid in the first hydraulic chamber 808 into the second hydraulic chamber 810, causing the second hydraulic rod 811 to extend downward from the second hydraulic chamber 810. The downward movement of the second hydraulic rod 811 will drive the filter plate 801 to descend, so that it is withdrawn from the exhaust duct 4. At this time, as the filter plate 801 descends, it will also drive the guide plate 803 to descend. The downward movement of the guide plate 803 will drive the brush 807 to approach the filter plate 801, so that the filter plate 801 is cleaned by the brush 807 during the descent, facilitating self-cleaning when being withdrawn, thereby reducing the workload of maintenance.

[0028] Example three, see Figures 3 - 8, the receiving assembly 9 includes a support base 901, the support base 901 is fixedly connected to the lower part of the exhaust duct 4, a fixing rod 902 is fixedly connected to the front of the support base 901, the fixing rod 902 is cylindrical in shape, a rotating cylinder 903 is rotatably connected to the outer surface of the fixing rod 902, the rotating cylinder 903 is in the shape of a cylinder with a bottom, and through holes are provided on the bottom of the cylinder for accommodating the fixing rod 902. The rotating cylinder 903 is rotatably connected to the fixing rod 902 through a bearing. A torsion spring 904 is elastically connected between the rotating cylinder 903 and the fixing rod 902. The torsion spring 904 is arranged on the outer surface of the fixing rod 902, one end of which is connected to the outer surface of the fixing rod 902, and the other end is connected to the inner surface of the rotating cylinder 903. The torsion spring 904 will apply torsion in the normal state to make the rotating cylinder 903 rotate counterclockwise on the fixing rod 902. A connecting arm 905 is fixedly connected to the lower part of the rotating cylinder 903. The connecting arm 905 is arc-shaped, and a receiving bag 906 is fixedly connected to the front of the connecting arm 905. The receiving assembly 9 further includes a pushing bar 907. The pushing bar 907 is arranged below the filter plate 801. The lifting of the filter plate 801 can push the pushing bar 907, and the pushing bar 907 is fixedly connected to the rear of the connecting arm 905.

[0029] When the above-mentioned device is specifically used, when the filter plate 801 descends, it will also press down the pushing bar 907. The pushing bar 907 will drive the connecting arm 905 to make the rotating cylinder 903 rotate clockwise on the fixing rod 902. By rotating the rotating cylinder 903 clockwise on the fixing rod 902, the torsion spring 904 will be tightened. By rotating the rotating cylinder 903 clockwise on the fixing rod 902, the receiving bag 906 on the connecting arm 905 will be moved to the lower part of the open opening of the exhaust duct 4, so as to facilitate the receiving of the fixing ring 410 and the dust removal filter bag 409 pushed out from the exhaust duct 4.

[0030] 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 of the present invention and its inventive concept, makes equivalent substitutions or changes, and all should be covered by the protection scope of the present invention.

Claims

1. A dust removal device for a thermal power generation boiler that is convenient for replacing dust removal bags, comprising an air inlet pipe (1), a pipe rotary joint (2) being fixedly connected to the rear end of the air inlet pipe (1), and an air delivery channel (3) being fixedly connected to the rear end of the pipe rotary joint (2), wherein: An exhaust pipe (4) is arranged at the rear of the air delivery channel (3); a closing plate (401) is fixedly connected to the outer surface of the exhaust pipe (4); a limiting ring (402) is fixedly connected to the inner surface of the exhaust pipe (4); a guide ring (403) is rotatably connected to the outer surface of the exhaust pipe (4); a fixing member (5) is arranged on the front of the guide ring (403); a gear member (6) is arranged below the guide ring (403); an air chamber (404) passes through and is fixedly connected to the upper part of the exhaust pipe (4); a first piston rod (405) and a second piston rod (406) are slidably connected to the inner surface of the air chamber (404); A plug rod (406) is fixedly connected to a support rod (407) above the exhaust pipe (4); an elastic sheet (408) is fixedly connected to the top of the inner surface of the support rod (407); a threaded member (7) is arranged behind the elastic sheet (408); a dust filter bag (409) is arranged on the inner surface of the exhaust pipe (4); a fixing ring (410) is fixedly connected to the front of the dust filter bag (409); a filter assembly (8) for further dust removal is installed on the inner surface of the exhaust pipe (4); and a receiving assembly (9) for receiving the dust filter bag (409) is installed below the exhaust pipe (4).

2. A dust removal device for a thermal power generation boiler that is convenient for replacing dust removal bags according to claim 1, characterized in that: The fixing member (5) comprises a fixing plate (501), the fixing plate (501) penetrates and is slidably connected to the outer surface of the exhaust pipe (4), a spring (502) is elastically connected between the fixing plate (501) and the outer surface of the exhaust pipe (4), a guide column (503) is fixedly connected to the rear of the fixing plate (501), a guide groove (504) is formed on the front of the guide ring (403), and the guide column (503) is slidably connected to the inner surface of the guide groove (504).

3. A dust removal device for a thermal power generation boiler that is convenient for replacing dust removal bags according to claim 1, characterized in that: The gear member (6) comprises a sliding frame (601), the sliding frame (601) being fixedly connected to the outer surface of the exhaust pipe (4), the outer surface of the sliding frame (601) being slidably connected to a rack (602), a first gear (603) being meshed below the rack (602), a connecting column (604) being fixedly connected to the front of the first gear (603), the connecting column (604) being fixedly connected to the rear of the air delivery channel (3), a first tooth (605) being meshed above the rack (602), and the first tooth (605) being fixedly connected to the outer surface of the guide ring (403).

4. A dust removal device for a thermal power generation boiler that is convenient for replacing dust removal bags according to claim 1, characterized in that: The threaded member (7) comprises a push plate (701), the push plate (701) being fixedly connected to the rear of the guide ring (403), the push plate (701) being slidably connected to the outer surface of the exhaust pipe (4), a second tooth (702) being fixedly connected to the top of the push plate (701), a second gear (703) being meshed above the second tooth (702), a threaded barrel (704) being fixedly connected to the front of the second gear (703), and the outer surface of the threaded barrel (704) being rotatably connected to the exhaust pipe (4). A support sleeve (705) is connected, the support sleeve (705) is fixedly connected to the upper part of the exhaust pipe (4), the inner surface of the threaded cylinder (704) is threadedly connected to a screw rod (706), the front side of the screw rod (706) is rotatably connected to a connecting piece (707), the front side of the connecting piece (707) is fixedly connected to a hook seat (708), the rear side of the connecting piece (707) is fixedly connected to a first telescopic rod (709), and the first telescopic rod (709) is fixedly connected to the upper part of the support sleeve (705).

5. A dust removal device for a thermal power generation boiler that is convenient for replacing dust removal bags according to claim 1, characterized in that: The filter assembly (8) comprises a filter plate (801), the filter plate (801) being plugged into the lower part of the exhaust pipe (4), a second telescopic rod (802) being fixedly connected to the upper part of the filter plate (801), the second telescopic rod (802) being fixedly connected to the outer surface of the exhaust pipe (4), a guide plate (803) being fixedly connected to the front of the filter plate (801), a supporting rod (804) being slidably connected to the front of the guide plate (803), the supporting rod (804) being fixedly connected to the outer surface of the exhaust pipe (4), a support plate (805) being fixedly connected to the lower part of the exhaust pipe (4), an elastic telescopic rod (806) being fixedly connected to the rear of the support plate (805), and a brush (807) being fixedly connected to the rear end of the elastic telescopic rod (806).

6. A dust removal device for a thermal power generation boiler that is convenient for replacing dust removal bags according to claim 5, characterized in that: The filter assembly (8) further comprises a first hydraulic bin (808), the first hydraulic bin (808) being fixedly connected to the outer surface of the exhaust pipe (4), a first hydraulic rod (809) being fixedly connected to the inner surface of the first hydraulic bin (808), the first hydraulic rod (809) being fixedly connected to the front of the push plate (701), a second hydraulic bin (810) being fixedly connected to the outer surface of the exhaust pipe (4), the second hydraulic bin (810) being connected to the first hydraulic bin (808) by a pipeline, a second hydraulic rod (811) being slidably connected to the inner surface of the second hydraulic bin (810), and the second hydraulic rod (811) being fixedly connected to the top of the filter plate (801).

7. A dust removal device for a thermal power generation boiler that is convenient for replacing dust removal bags according to claim 1, characterized in that: The receiving assembly (9) comprises a support seat (901), the support seat (901) being fixedly connected to the lower part of the exhaust pipe (4), a fixed rod (902) being fixedly connected to the front of the support seat (901), a rotating cylinder (903) being rotatably connected to the outer surface of the fixed rod (902), a torsion spring (904) being elastically connected between the rotating cylinder (903) and the fixed rod (902), a connecting arm (905) being fixedly connected to the lower part of the rotating cylinder (903), and a receiving bag (906) being fixedly connected to the front of the connecting arm (905).

8. A dust removal device for a thermal power generation boiler that is convenient for replacing dust removal bags according to claim 7, characterized in that: The receiving assembly (9) further comprises a pushing bar (907), wherein the pushing bar (907) is fixedly connected to the rear of the connecting arm (905).

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