A dust removal device for a thermal power boiler, which is convenient for replacing a dust removal bag

Abstract

The application discloses a dust removal device convenient for replacing dust removal bags for thermal power generation boilers and belongs to the dust removal equipment field, which comprises an air inlet pipe, the rear end of the air inlet pipe is fixedly connected with a pipeline rotary joint, the rear end of the pipeline rotary joint is fixedly connected with a wind conveying channel, the rear of the wind conveying channel is provided with an air outlet pipe, the outer surface of the air outlet pipe is fixedly connected with a closing plate, the inner surface of the air outlet pipe is fixedly connected with a limiting ring, the outer surface of the air outlet pipe is rotatably connected with a guide ring, the front surface of the guide ring is provided with a fixing piece, the lower portion of the guide ring is provided with a gear piece, and the upper portion of the air outlet pipe is penetrated through and fixedly connected with an air warehouse. The dust removal device is convenient for switching different air outlet pipes to convey air out, the dust removal filter bags in the opened air outlet pipe can be loosened by switching the air outlet pipe, the dust removal filter bags can be tamped out of the air outlet pipe at the same time, and the dust removal filter bags are convenient to disassemble.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of dust removal equipment, in particular, relates to a dust removal device for thermal power plant boiler which is convenient to replace dust removal bag. BACKGROUND

[0002] As a kind of filter equipment needing long time work, the traditional dust removal equipment generally adopts the structure of fixed array of multiple filter bags, each filter bag is in a filter cavity, after filter bag dust is full, if maintenance is needed, shutdown is needed, after shutdown, filter bag is disassembled, so there will be stop production in the process of filter bag replacement, which affects enterprise benefit.

[0003] The patent document with publication number CN112138479B discloses a variable air duct dust collector convenient to maintain, which relates to a variable air duct dust collector convenient to maintain, comprising an external air duct and a middle connecting air duct;Wherein the external air duct comprises an air inlet pipe, an air outlet pipe and a filter pipe group, the middle connecting air duct comprises a manifold, and the filter pipe group is connected in a ring array on the manifold;The filter pipe group comprises a filter pipe shell, an air inlet pipe is arranged at one end of the filter pipe shell in the axial direction, a filter bag A is connected at the end of the air inlet pipe;An air outlet nozzle is connected to the inner wall of the other end of the filter shell in the axial direction, and a wind valve A is connected to the reduced port end of the air outlet nozzle;A connecting pipe for communicating with the manifold is vertically connected to the outer wall of the filter pipe shell, and a filter bag B is arranged at the end of the connecting pipe connected with the filter pipe shell;An openable maintenance cover is further arranged on the wall surface of the filter pipe shell;An auxiliary ventilation pipe is further connected between the front air inlet pipe and the air inlet pipe of the array second group of filter pipe shells, and a wind valve C is connected to the auxiliary ventilation pipe, in the above application file, the air flow direction is switched by the wind valve A, the wind valve B and the wind valve C, so as to disconnect part of the filter pipe mechanism, while the filter equipment is working, the filter bag of the dust removal equipment is replaced, however, after switching the air flow direction, the filter bag needs to be disassembled by opening the maintenance cover, the replacement process is complicated, and it is not convenient to loosen and fix the filter bag when switching the air flow direction, so as to disassemble the filter bag more quickly and conveniently. SUMMARY

[0004] In view of the deficiencies of the prior art, the present application provides a dust removal device for thermal power plant boiler which is convenient to replace dust removal bag, which solves the problems raised in the background art.

[0005] In order to achieve the above object, the application provides a dust removal device for a thermal power boiler, which is convenient for replacing a dust removal bag, comprising an air inlet pipe, a pipe rotary joint is fixedly connected to the rear end of the air inlet pipe, an air inlet channel is fixedly connected to the rear end of the pipe rotary joint, an air outlet pipe is arranged behind the air inlet channel, a closing plate is fixedly connected to the outer surface of the air outlet pipe, a limiting ring is fixedly connected to the inner surface of the air outlet pipe, a guide ring is rotatably connected to the outer surface of the air outlet pipe, a fixing piece is arranged on the front surface of the guide ring, a gear piece is arranged below the guide ring, a gas chamber is penetrated through and fixedly connected to the upper portion of the air outlet pipe, a first piston rod and a second piston rod are slidably connected to the inner surface of the gas chamber, a support rod is fixedly connected to the inner surface of the upper portion of the air outlet pipe, an elastic sheet is fixedly connected to the top of the inner surface of the support rod, a threaded piece is arranged behind the elastic sheet, a dust removal filter bag is arranged on the inner surface of the air outlet pipe, a fixing ring is fixedly connected to the front surface of the dust removal filter bag, a filtering assembly for further dust removal is arranged in the air outlet pipe, and a receiving assembly for receiving the dust removal filter bag is arranged below the air outlet pipe.

[0006] Preferably, the fixing piece comprises a fixing sheet, the fixing sheet is penetrated through and slidably connected to the outer surface of the air outlet pipe, springs are elastically connected between the fixing sheet and the outer surface of the air outlet pipe, a guide column is fixedly connected to the rear of the fixing sheet, and a guide groove is arranged on the front surface of the guide ring and slidably connected to the inner surface of the guide groove.

[0007] Preferably, the gear piece comprises a sliding frame, the sliding frame is fixedly connected to the outer surface of the air outlet pipe, a gear rack is slidably connected to the outer surface of the sliding frame, a first gear is engaged below the gear rack, a connecting column is fixedly connected to the front surface of the first gear, the connecting column is fixedly connected to the rear of the air inlet channel, a first tooth is engaged above the gear rack, and the first tooth is fixedly connected to the outer surface of the guide ring.

[0008] Preferably, the threaded piece comprises a pushing plate, the pushing plate is fixedly connected to the rear of the guide ring and slidably connected to the outer surface of the air outlet pipe, a second tooth is fixedly connected to the upper portion of the pushing plate, a second gear is engaged above the second tooth, a threaded cylinder is fixedly connected to the front surface 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 portion of the air outlet pipe, a screw rod is threadedly connected to the inner surface of the threaded cylinder, a connecting sheet is rotatably connected to the front surface of the screw rod, a hook seat is fixedly connected to the front surface of the connecting sheet, a first telescopic rod is fixedly connected to the rear of the connecting sheet, and the first telescopic rod is fixedly connected to the upper portion of the support sleeve.

[0009] Preferably, the filtering assembly comprises a filtering plate, the filtering plate is connected below the exhaust pipe, a second telescopic rod is fixedly connected above the filtering plate, the second telescopic rod is fixedly connected with the outer surface of the exhaust pipe, a guide plate is fixedly connected to the front of the filtering plate, a leaning rod is slidably connected to the front of the guide plate, the leaning rod is fixedly connected with the outer surface of the exhaust pipe, a supporting plate is fixedly connected below the exhaust pipe, an elastic telescopic rod is fixedly connected behind the supporting plate, and a brush is fixedly connected to the rear end of the elastic telescopic rod.

[0010] Preferably, the filtering assembly further comprises a first hydraulic chamber, the first hydraulic chamber is fixedly connected with the outer surface of the exhaust pipe, a first hydraulic rod is fixedly connected to the inner surface of the first hydraulic chamber, the first hydraulic rod is fixedly connected to the front of the pushing plate, the outer surface of the exhaust pipe is fixedly connected with a second hydraulic chamber, the second hydraulic chamber is connected with 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 filtering plate.

[0011] Preferably, the receiving assembly comprises a supporting seat, the supporting seat is fixedly connected below the exhaust pipe, a fixing rod is fixedly connected to the front of the supporting seat, a rotating cylinder is rotatably connected to the outer surface of the fixing rod, a torsional 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 assembly further comprises a pushing strip, the pushing strip is fixedly connected behind the connecting arm.

[0013] The application has the advantages that:

[0014] (1) The application facilitates switching of different exhaust pipes for air outlet by setting an air inlet channel, and the dust removal filter bag in the open exhaust pipe can be loosened and knocked out of the exhaust pipe by switching the exhaust pipe, which facilitates disassembly of the dust removal filter bag.

[0015] (2) The application facilitates maintenance of the filtering assembly by setting a filtering assembly in the exhaust pipe to add an extra safety measure to prevent the dust removal filter bag from breaking and affecting the filtering effect, and the filtering assembly in the exhaust pipe is extracted and self-cleaned when the exhaust pipe is opened by switching the exhaust pipe.

[0016] (3) The application facilitates receiving of the dust removal filter bag knocked out of the exhaust pipe by setting a receiving assembly, and the receiving assembly is moved below the front opening of the exhaust pipe by extraction of the filtering assembly, which facilitates receiving of the dust removal filter bag and prevents the dust removal filter bag from falling after being knocked out. BRIEF DESCRIPTION OF DRAWINGS

[0017] The accompanying drawings, which form a part of this application, are intended to provide further understanding of the application and are incorporated herein in their entirety. The drawings are not intended to limit the application and are merely used to explain more fully of the present application. In the drawings:

[0018] Figure 1 is a schematic diagram of the overall structure of the present application;

[0019] Figure 2 is a bottom view of the overall structure of the present application;

[0020] Figure 3 is a right view of the overall structure of the present application;

[0021] Figure 4 is a top view of the overall structure of the present application;

[0022] Figure 5 is a bottom right view of the overall structure of the present application;

[0023] Figure 6 is a schematic diagram of the structure at A in the present application; Figure 3

[0024] Figure 7 is a schematic diagram of the structure at B in the present application; Figure 3

[0025] Figure 8 is a schematic diagram of the structure at C in the present application. Figure 5

[0026] ​​​In the above figure, 1, air inlet pipe; 2, pipe rotary joint; 3, air conveying channel; 4, air exhaust pipe; 401, closing plate; 402, limiting ring; 403, guide ring; 404, air chamber; 405, first piston rod; 406, second piston rod; 407, support rod; 408, elastic sheet; 409, dust removal filter bag; 410, fixing ring; 5, fixing piece; 501, fixing sheet; 502, spring; 503, guide column; 504, guide groove; 6, gear piece; 601, sliding frame; 602, rack; 603, first gear; 604, connecting column; 605, first tooth; 7, threaded piece; 701, push plate; 702, second tooth; 703, second gear; 704, threaded cylinder; 705, support sleeve; 706, screw rod; 707, connecting sheet; 708, hook base; 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 chamber; 809, first hydraulic rod; 810, second hydraulic chamber; 811, second hydraulic rod; 9, receiving assembly; 901, support base; 902, fixing rod; 903, rotating cylinder; 904, torsional spring; 905, connecting arm; 906, receiving bag; 907, push bar. DETAILED DESCRIPTION

[0027] In order to make the personnel in the technical field better understand the scheme of the present application, the technical scheme in the embodiments of the present application will be clearly and completely described below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should belong to the scope of protection of the present application.

[0028] It should be noted that the terms "first", "second" and the like in the specification and claims of the present application and the above-described drawings are used to distinguish similar objects, and do not necessarily indicate a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so as to describe the embodiments of the present application. In addition, the terms "include" and "have" 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 limit to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0029] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "transverse", "longitudinal" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not intended to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0030] In addition, in addition to indicating the orientation or positional relationship, the above-mentioned partial terms can also be used to indicate other meanings, for example, the term "upper" can also be used to indicate a certain dependent relationship or connection relationship in some cases. For those skilled in the art, the specific meaning of these terms in the present application can be understood according to the specific circumstances.

[0031] In addition, the terms "mount", "set", "provided with", "connected", "connected", "sleeved" should be broadly understood. For example, it can be fixedly connected, detachably connected, or integrally constructed; it can be mechanically connected or electrically connected; it can be directly connected, or indirectly connected through an intermediate medium, or it can be internal communication between two devices, elements or components. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0032] It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in conjunction with the embodiments.

[0033] Embodiment one, see Figures 1-8The embodiment provides a dust removal device convenient for replacing dust removal bags for a thermal power boiler, which comprises an air inlet pipe 1, the air inlet pipe 1 is an input end of waste gas of the thermal power boiler, a pipe rotary joint 2 is fixedly connected to the rear end of the air inlet pipe 1, the pipe rotary joint 2 is used for enabling an air conveying channel 3 to rotate and adjust, the air conveying channel 3 has a rotation angle limit, so that the rear end of the air conveying channel 3 is aligned with an air outlet pipe 4, the rear end of the pipe rotary joint 2 is fixedly connected with the air conveying channel 3, the air conveying channel 3 is provided with two straight-angle bending portions, the air outlet pipe 4 is arranged behind the air conveying channel 3, the number of the air outlet pipes 4 is two, a closing plate 401 is fixedly connected to the outer surface of the air outlet pipe 4, the front surface of the closing plate 401 and the front surface of the air outlet pipe 4 are in the same plane, a limiting ring 402 is fixedly connected to the inner surface of the air outlet pipe 4, the limiting ring 402 is annular, a guide ring 403 is rotatably connected to the outer surface of the air outlet pipe 4, the number of the guide rings 403 is two, the guide rings 403 and the outer surface of the air outlet pipe 4 are rotatably connected through annular sliding grooves, the front surface of the guide ring 403 is provided with a fixing piece 5, the fixing piece 5 comprises a fixing sheet 501, a distance is left between the fixing sheet 501 and the limiting ring 402 for placing a fixing ring 410, the fixing sheet 501 penetrates through and is slidably connected to the outer surface of the air outlet pipe 4, the fixing sheet 501 is L-shaped, springs 502 are elastically connected between the fixing sheet 501 and the outer surface of the air outlet pipe 4, a guide column 503 is fixedly connected to the rear of the fixing sheet 501, guide grooves 504 are formed in the front surface of the guide ring 403, the number of the fixing sheets 501, the springs 502, the guide columns 503 and the guide grooves 504 on each guide ring 403 is six, the guide column 503 is slidably connected to the inner surface of the guide groove 504, gear pieces 6 are arranged below the guide ring 403, the gear piece 6 comprises a sliding frame 601, the sliding frame 601 is C-shaped, the sliding frame 601 is fixedly connected to the outer surface of the air outlet pipe 4, the sliding frame 601 is connected to the outer surfaces of the two air outlet pipes 4 at two ends, respectively, a rack 602 is slidably connected to the outer surface of the sliding frame 601, the rack 602 is provided with teeth on the upper surface and the lower surface, a first gear 603 is engaged below 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 conveying channel 3, the rotation of the air conveying channel 3 can drive the connecting column 604 to rotate the first gear 603, a first tooth 605 is engaged above the rack 602, the first tooth 605 is fixedly connected to the outer surface of the guide ring 403, an air warehouse 404 penetrates through and is fixedly connected above the air outlet pipe 4, the air warehouse 404 is provided with two obtuse-angle corners, one end of the air warehouse 404 is arranged in the air outlet pipe 4, and the other end of the air warehouse 404 is arranged outside the air outlet pipe 4, a first piston rod 405 and a second piston rod 406 are slidably connected to the inner surface of the air warehouse 404, a through hole for containing the first piston rod 405 is arranged on the limiting ring 402, a support rod 407 is fixedly connected above the air outlet pipe 4, the support rod 407 is U-shaped, an elastic sheet 408 is fixedly connected to the inner surface top of the support rod 407, the elastic sheet 408 is made of metal and has elasticity, a threaded piece 7 is arranged behind the elastic sheet 408,The threaded part 7 comprises a push plate 701 which is L-shaped, is an arc-shaped sheet, is attached to the outer surface of the air exhaust pipe 4, is fixedly connected to the rear of the guide ring 403, is in sliding connection with the outer surface of the air exhaust pipe 4, has a second gear tooth 702 fixedly connected to the upper portion, has a second gear 703 engaged with the upper portion of the second gear tooth 702, has a threaded cylinder 704 fixedly connected to the front face, has a thread matched with the screw rod 706 arranged in the threaded cylinder 704, has a support sleeve 705 rotatably connected to the outer surface of the threaded cylinder 704, has a bearing arranged between the support sleeve 705 and the threaded cylinder 704, can rotate in the support sleeve 705, is fixedly connected to the upper portion of the air exhaust pipe 4, has a screw rod 706 threadedly connected to the inner surface of the threaded cylinder 704, has a connecting sheet 707 rotatably connected to the front face, has a hook base 708 fixedly connected to the front face of the connecting sheet 707, is made of metal, has a certain elasticity, has a first telescopic rod 709 fixedly connected to the rear of the connecting sheet 707, is fixedly connected to the upper portion of the support sleeve 705, has a dust removal filter bag 409 arranged in the inner surface of the air exhaust pipe 4, is used for filtering dust in the air, is prior art, has a fixing ring 410 fixedly connected to the front face, is used for being placed between the fixing sheet 501 and the limiting ring 402 to fix the dust removal filter bag 409 in the air exhaust pipe 4, is assembled with a filtering assembly 8 in the inner surface of the air exhaust pipe 4 for further dust removal, is assembled with a receiving assembly 9 under the air exhaust pipe 4 for receiving the dust removal filter bag 409.

[0034] The above-mentioned device in specific use, first into the flue gas of thermal power plant boiler into the air inlet pipe 1, the flue gas will be through the air inlet pipe 1 and pipe rotary joint 2 into the air supply channel 3, and then transported to the exhaust pipe 4, the dust filter bag 409 in the exhaust pipe 4 will filter the dust in the flue gas, when the dust filter bag 409 in the exhaust pipe 4 collects a large amount of dust and affects the ventilation, through the pipe rotary joint 2 rotates the air supply channel 3, so that the air supply channel 3 and another exhaust pipe 4 docking, at this time the original exhaust pipe 4 will be open, through the rotation of the air supply channel 3 will drive the connecting column 604 to rotate the first gear 603, through the rotation of the first gear 603 will move the rack 602 on the sliding frame 601, through the sliding of the rack 602 will move the first tooth 605 to rotate the guide ring 403 on the exhaust pipe 4, through the rotation of the guide ring 403 will drive the guide groove 504 to push the guide column 503, so that the guide column 503 drives the fixed sheet 501 to slide, the fixed sheet 501 will be drawn out, so as not to block the fixed ring 410 between the fixed sheet 501 and the limiting ring 402, at this time with the rotation of the guide ring 403 will drive the push plate 701 to slide on the exhaust pipe 4, the push plate 701 will drive the second tooth 702 to move the second gear 703 to rotate, through the rotation of the second gear 703 will drive the threaded cylinder 704 to rotate in the support sleeve 705, through the rotation of the threaded cylinder 704 will drive the screw 706 to retract, the screw 706 will drive the connecting sheet 707 to move in the limiting action of the first telescopic rod 709 to the threaded cylinder 704 direction, the connecting sheet 707 will drive the hook base 708 to pull the elastic sheet 408 to bend, the elastic sheet 408 with the bending its lower end away from the surface of the exhaust pipe 4 will be more and more far, when the hook base 708 is pulled to a certain extent, the elastic sheet 408 will fall off from the hook base 708, at this time the elastic sheet 408 will release the elastic force to hit the second piston rod 406, in turn through the air chamber 404 to push the first piston rod 405 to the front, the first piston rod 405 will protrude from the front of the limiting ring 402, in turn to push the fixed ring 410 to deviate from the exhaust pipe 4, in order to disassemble the dust filter bag 409.

[0035] Example two, see Figures 3-7The filter assembly 8 comprises filter plates 801, specifically hard plug-in plates, provided with through holes, and the through holes are provided with filter screens, the filter plates 801 are inserted below the exhaust pipes 4, the number of the filter plates 801 is two, and the filter plates 801 are arranged in the two exhaust pipes 4 respectively, the second telescopic rods 802 are fixedly connected above the filter plates 801, the strip structures protruding to the two sides are arranged below the filter plates 801, the second telescopic rods 802 are fixedly connected with the outer surfaces of the exhaust pipes 4, the guide plates 803 are fixedly connected to the front surfaces of the filter plates 801, the leaning rods 804 are slidingly connected to the front surfaces of the guide plates 803, the number of the guide plates 803 and the leaning rods 804 on each filter plate 801 is two, the leaning rods 804 are fixedly connected with the outer surfaces of the exhaust pipes 4, the support plates 805 are fixedly connected below the exhaust pipes 4, the elastic telescopic rods 806 are fixedly connected behind the support plates 805, the elastic telescopic rods 806 are in a contracted state in a normal state, the brushes 807 are fixedly connected to the rear ends of the elastic telescopic rods 806, the first hydraulic chambers 808 are fixedly connected with the outer surfaces of the exhaust pipes 4, the first hydraulic rods 809 are fixedly connected to the inner surfaces of the first hydraulic chambers 808, the first hydraulic rods 809 and the first hydraulic chambers 808 are slidingly connected through pistons, the first hydraulic rods 809 and the first hydraulic chambers 808 are arc-shaped, the first hydraulic rods 809 are fixedly connected to the front surfaces of the push plates 701, the second hydraulic chambers 810 are fixedly connected with the outer surfaces of the exhaust pipes 4, the second hydraulic chambers 810 and the first hydraulic chambers 808 are connected through pipelines, the second hydraulic chambers 810 and the first hydraulic chambers 808 are connected and communicated through the hoses, the second hydraulic rods 811 are slidingly connected to the inner surfaces of the second hydraulic chambers 810, the second hydraulic rods 811 and the second hydraulic chambers 810 are slidingly connected through pistons, and the second hydraulic rods 811 are fixedly connected above the filter plates 801.

[0036] When the guide ring 403 rotates to drive the push plate 701 to slide on the exhaust pipe 4, the push plate 701 also drives the first hydraulic rod 809 to extend into the first hydraulic chamber 808, so that the liquid in the first hydraulic chamber 808 is injected into the second hydraulic chamber 810, the second hydraulic rod 811 extends downward from the second hydraulic chamber 810, the second hydraulic rod 811 descends to drive the filter plate 801 to descend and be drawn out of the exhaust pipe 4, at this time, the filter plate 801 also drives the guide plate 803 to descend, the guide plate 803 descends to drive the brush 807 to approach the filter plate 801, so that the filter plate 801 is cleaned by the brush 807 in the descending process, thereby playing a self-cleaning role when being drawn out, and the maintenance workload is reduced.

[0037] In the third embodiment, refer to Figures 3-8The receiving assembly 9 comprises a support base 901 fixedly connected below the air exhaust pipe 4, the support base 901 is fixedly connected with a fixed rod 902 in the front, the fixed rod 902 is cylindrical in shape, the fixed rod 902 is rotatably connected with a rotating cylinder 903 in the outer surface, the rotating cylinder 903 is cylindrical with a bottom, a through hole is arranged on the bottom for accommodating the fixed rod 902, the rotating cylinder 903 is rotatably connected with the fixed rod 902 through a bearing, the rotating cylinder 903 and the fixed rod 902 are elastically connected with a torsion spring 904, the torsion spring 904 is arranged on the outer surface of the fixed rod 902, one end of the torsion spring 904 is connected with the outer surface of the fixed rod 902, and the other end of the torsion spring 904 is connected with the inner surface of the rotating cylinder 903, the torsion spring 904 will exert a torsion force to make the rotating cylinder 903 rotate counterclockwise on the fixed rod 902 in the normal state, the rotating cylinder 903 is fixedly connected with a connecting arm 905 below, the connecting arm 905 is arc-shaped in shape, the connecting arm 905 is fixedly connected with a receiving bag 906 in the front, and the receiving assembly 9 further comprises a pushing strip 907 arranged below the filter plate 801, the lifting of the filter plate 801 can drive the pushing strip 907, and the pushing strip 907 is fixedly connected with the connecting arm 905 rearward.

[0038] In specific use, the above device will also press the pushing strip 907 downward through the lowering of the filter plate 801, the pushing strip 907 will drive the connecting arm 905 to make the rotating cylinder 903 rotate clockwise on the fixed rod 902, the rotating cylinder 903 will be twisted on the fixed rod 902 through clockwise rotation, the torsion spring 904 will be tightened, and the receiving bag 906 on the connecting arm 905 will be moved below the open opening of the air exhaust pipe 4 through the clockwise rotation of the rotating cylinder 903 on the fixed rod 902, so as to receive the fixed ring 410 and the dust filter bag 409 pushed out from the air exhaust pipe 4.

[0039] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A dust removal device for a thermal power boiler that facilitates the replacement of dust collection bags, comprising an air inlet pipe (1), wherein a pipe rotary joint (2) is fixedly connected to the rear end of the air inlet pipe (1), and an air conveying channel (3) is fixedly connected to the rear end of the pipe rotary joint (2), characterized in that, An exhaust pipe (4) is provided behind the air supply channel (3). A sealing plate (401) is fixedly connected to the outer surface of the exhaust pipe (4). A limit 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 part (5) is provided on the front of the guide ring (403). A gear part (6) is provided below the guide ring (403). An air chamber (404) is passed through and fixedly connected to the top of the exhaust pipe (4). A first piston rod (405) and a second piston rod are slidably connected to the inner surface of the air chamber (404). A stopper rod (406) is fixedly connected to the top of 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 part (7) is provided behind the elastic sheet (408). A dust removal filter bag (409) is provided on the inner surface of the exhaust pipe (4). A fixing ring (410) is fixedly connected to the front of the dust removal filter bag (409). A filter assembly (8) for further dust removal is assembled on the inner surface of the exhaust pipe (4). A receiving assembly (9) for receiving the dust removal filter bag (409) is assembled below the exhaust pipe (4). The fixing member (5) includes a fixing plate (501), which 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 post (503) is fixedly connected to the rear of the fixing plate (501). A guide groove (504) is opened on the front of the guide ring (403). The guide post (503) is slidably connected to the inner surface of the guide groove (504). The gear component (6) includes a sliding frame (601), which is fixedly connected to the outer surface of the exhaust pipe (4). A rack (602) is slidably connected to the outer surface of the sliding frame (601). A first gear (603) meshes below the rack (602). A connecting column (604) is fixedly connected to the front of the first gear (603). The connecting column (604) is fixedly connected to the rear of the air supply channel (3). A first tooth (605) meshes above the rack (602). The first tooth (605) is fixedly connected to the outer surface of the guide ring (403).

2. The dust removal device for a thermal power boiler with easily replaceable dust collection bags according to claim 1, characterized in that, The threaded component (7) includes a push plate (701), which is fixedly connected to the rear of the guide ring (403). The push plate (701) is slidably connected to the outer surface of the exhaust pipe (4). A second tooth (702) is fixedly connected above the push plate (701), and a second gear (703) meshes above the second tooth (702). A threaded cylinder (704) is fixedly connected to the front of the second gear (703), and the outer surface of the threaded cylinder (704) is rotatably connected. A support sleeve (705) is attached, and the support sleeve (705) is fixedly connected to the top of the exhaust pipe (4). A screw (706) is threadedly connected to the inner surface of the threaded cylinder (704). A connecting piece (707) is rotatably connected to the front of the screw (706). A hook seat (708) is fixedly connected to the front of the connecting piece (707). A first telescopic rod (709) is fixedly connected to the rear of the connecting piece (707). The first telescopic rod (709) is fixedly connected to the top of the support sleeve (705).

3. A dust removal device for a thermal power boiler with easily replaceable dust collection bags according to claim 1, characterized in that, The filter assembly (8) includes a filter plate (801), which is inserted into the lower part of the exhaust pipe (4). A second telescopic rod (802) is fixedly connected to the upper part of the filter plate (801). The second telescopic rod (802) is fixedly connected to the outer surface of the exhaust pipe (4). A guide plate (803) is fixedly connected to the front of the filter plate (801). A support rod (804) is slidably connected to the front of the guide plate (803). The support rod (804) is fixedly connected to the outer surface of the exhaust pipe (4). A support plate (805) is fixedly connected to the lower part of the exhaust pipe (4). An elastic telescopic rod (806) is fixedly connected to the rear of the support plate (805). A brush (807) is fixedly connected to the rear end of the elastic telescopic rod (806).

4. A dust removal device for a thermal power boiler with easily replaceable dust collection bags according to claim 3, characterized in that, The filter assembly (8) further includes a first hydraulic chamber (808), which is fixedly connected to the outer surface of the exhaust pipe (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 fixedly connected to the front of the push plate (701). A second hydraulic chamber (810) is fixedly connected to the outer surface of the exhaust pipe (4). The second hydraulic chamber (810) is connected to the first hydraulic chamber (808) by a pipeline. A second hydraulic rod (811) is slidably connected to the inner surface of the second hydraulic chamber (810). The second hydraulic rod (811) is fixedly connected to the top of the filter plate (801).

5. A dust removal device for a thermal power boiler with easily replaceable dust collection bags according to claim 1, characterized in that, The receiving component (9) includes a support base (901), which is fixedly connected to the lower part of the exhaust pipe (4). A fixing rod (902) is fixedly connected to the front of the support base (901). A rotating cylinder (903) is rotatably connected to the outer surface of the fixing rod (902). A torsion spring (904) is elastically connected between the rotating cylinder (903) and the fixing rod (902). A connecting arm (905) is fixedly connected to the lower part of the rotating cylinder (903). A receiving bag (906) is fixedly connected to the front of the connecting arm (905).

6. A dust removal device for a thermal power boiler with easily replaceable dust collection bags according to claim 5, characterized in that, The receiving component (9) also includes a push bar (907), which is fixedly connected to the rear of the connecting arm (905).

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