Ash discharging device of bag type dust collector

Abstract

The invention relates to the technical field of dust removers, and discloses a dust discharging device of a bag type dust remover, which comprises a rack and a dust removing box main body fixed on the rack, the dust removing box main body comprises a box body and a dust collecting hopper communicated with the box body and fixed at the bottom end of the box body, the dust collecting hopper comprises a hopper body and a dust discharging barrel fixedly communicated with the bottom end of the hopper body, a rotating shaft is rotationally connected into the hopper body, a plurality of rotating rods are fixedly connected to the rotating shaft in the axial direction of the rotating shaft, movable rods are slidably connected to the ends, away from the rotating shaft, of the rotating rods, and arch breaking cutters are fixed to the ends, away from the rotating rods, of the movable rods; and the dust removal box main body is provided with an arch breaking assembly for driving the rotating shaft to rotate and lift. The device has the following advantages and effects that the arch breaking assembly drives the rotating shaft to rotate and ascend and descend, so that the rotating shaft, the rotating rod, the movable rod and the arch breaking cutter rotate to directly cut and stir accumulated dust, an arch structure formed by the dust is destroyed, it is ensured that the dust smoothly falls down and is discharged, and stable operation of a dust removal system is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of dust collectors, and particularly relates to an ash discharging device for a bag filter dust collector. Background Art

[0002] A bag filter dust collector is a dry dust filtering device. The bag filter dust collector mainly consists of an upper box body, a middle box body, a lower box body, a dust cleaning system, an ash discharging mechanism and other parts. It is suitable for collecting fine, dry and non-fibrous dust. The filter bag is made of woven filter cloth or non-woven felt, and the dust-containing gas is filtered by the filtering action of the fiber fabric. When the dust-containing gas enters the bag filter dust collector, dust with large particles and high specific gravity falls to the bottom of the ash hopper. When the gas containing finer dust passes through the filter material, the dust is retained, and the gas is purified. Currently, it is widely used in industrial dust removal, chimney dust removal and other places.

[0003] The invention patent with the authorization announcement number CN113350909B discloses a bag filter dust collector, which relates to the field of dust removal equipment. The bag filter dust collector includes a frame, a clean gas box, a dust removal box, an ash collection hopper, a partition board, a support frame and filter bags, and further includes a striking device for striking the inner side wall of the filter bags. The striking device includes a striking rod, a limiting block, a return spring, a one-way ratchet wheel, a rotating shaft and a driving member for driving the rotating shaft to rotate. A plurality of sliding holes are formed in the support frame, and the plurality of sliding holes are arranged at intervals along the circumferential direction of the filter bags. The sliding holes are arranged along the radial direction of the filter bags. The striking rod is slidably connected with the sliding holes. The limiting block is connected to one end of the striking rod away from the filter bags. One end of the return spring is connected to the support frame, and the other end of the return spring is connected to the limiting block. The axial direction of the return spring is parallel to the axial direction of the striking rod. The one-way ratchet wheel is fixedly connected with the rotating shaft, and the outer side wall of the one-way ratchet wheel is attached to the limiting block;

[0004] The above device has the following deficiencies: Under high humidity or viscous dust working conditions, the dust will form an "arch structure" in the ash hopper, which hinders the natural fall of the dust, causes too much ash accumulation in the ash hopper, thereby increasing the structural load of the ash hopper and possibly leading to its deformation or cracking. When manually cleaning, there are risks such as dust inhalation. Summary of the Invention

[0005] The purpose of the present invention is to provide an ash discharging device for a bag filter dust collector, which has the effect of being able to destroy the arched structure formed by the dust and ensuring the stable operation of the dust removal system.

[0006] The above technical object of the present invention is achieved by the following technical solutions: A dust discharging device for a bag filter, including a frame and a dust removal box body fixed to the frame. The dust removal box body includes a box body and a dust collecting hopper fixed to the bottom end of the box body and communicating with the box body. The dust collecting hopper includes a hopper body and a dust discharging cylinder fixedly connected to the bottom end of the hopper body. A rotating shaft is rotatably connected in the hopper body. A plurality of rotating rods are fixedly connected to the rotating shaft along its axial direction. One end of the rotating rod away from the rotating shaft is slidably connected with a movable rod. A breaking arch knife is fixed to one end of the movable rod away from the rotating rod. The dust removal box body is provided with a breaking arch assembly for driving the rotating shaft to rotate and lift.

[0007] By adopting the above technical solutions, filtering systems such as filter bags and air inlets and outlets in the dust removal box body are all arranged above the breaking arch assembly. When the filter bags vibrate, the dust on the filter bags is shaken off into the hopper body in the dust collecting hopper. When the dust in the hopper body accumulates to a certain amount and needs to be discharged, the breaking arch assembly drives the rotating shaft to rotate and lift. Thus, the rotating shaft, rotating rods, movable rods and breaking arch knives rotate to directly cut and stir the accumulated dust, destroying the arched structure formed by it, ensuring the smooth falling and discharging of the dust, and ensuring the stable operation of the dust removal system.

[0008] The further setting of the present invention is: The inner cavity of the dust discharging cylinder is a dust discharging channel. Two groups of dust discharging components are arranged in the dust discharging channel from top to bottom. The dust discharging component includes a fixed frame fixed to the inner wall surface of the dust discharging cylinder and a first tooth ring rotatably connected outside the dust discharging cylinder. A fixed shaft located in the middle of the dust discharging channel is fixed in the middle of the fixed frame. A plurality of dust discharging shafts are rotatably connected between the wall surface of the dust discharging cylinder and the fixed shaft. The plurality of dust discharging shafts are circumferentially and uniformly arranged around the inner wall surface of the dust discharging cylinder. Dust discharging plates are fixed on the dust discharging shafts. When the plurality of dust discharging plates are in a horizontal state, the dust discharging channel is closed. The end of the dust discharging shaft rotates out of the dust discharging cylinder and is fixed with a first gear meshing with the first tooth ring. The first tooth ring located in the upper layer is driven to rotate by a first driving component, and the first tooth ring located in the lower layer is driven to rotate by a second driving component.

[0009] By adopting the above technical solution, by arranging two sets of ash discharging components and adopting an alternating opening and closing design, intermittent but continuous ash discharging is realized, avoiding excessive ash accumulation or bridging in the ash hopper. At the same time, one set of ash discharging components can always be in a closed state during ash discharging, effectively isolating the internal and external airflows, maintaining the airtightness of the system, reducing dust diffusion, and meeting the environmental protection requirements better. During use, the first driving component first drives the upper first toothed ring to rotate, and then the rotation of the upper first toothed ring drives a plurality of first gears meshing with it to rotate. Then, a plurality of ash discharging shafts and ash discharging plates rotate, so that the dust scattered in the hopper body first falls into the ash discharging channel between the two sets of ash discharging components. Then, the first toothed ring stops rotating, and the second driving component drives the first toothed ring at the lower layer to rotate. Then, the lower first gear rotates, driving a plurality of first gears meshing with it to rotate. Then, a plurality of ash discharging shafts and ash discharging plates rotate to open the ash discharging channel, and the dust accumulated in the ash discharging channel is discharged for subsequent treatment.

[0010] The further setting of the present invention is that: the arch breaking component includes a second toothed ring rotatably connected to the box body. A fixing plate located inside the box body is fixed on the inner wall surface of the second toothed ring. A connecting shaft is slidably connected to the fixing plate. The rotating shaft is rotatably connected to the bottom end of the connecting shaft. The first driving component includes a driving frame fixed outside the dust removal box body. A driving shaft is rotatably connected to the driving frame. A first driving motor for driving the driving shaft to rotate is fixed on the driving frame. A driving belt is sleeved between the driving shaft and the first toothed ring at the upper layer. A second gear meshing with the second toothed ring is fixed on the driving shaft. A third toothed ring is fixed on the inner wall surface of the box body. A third gear meshing with the third toothed ring is fixed on the rotating shaft.

[0011] By adopting the above technical solution, during ash discharging, the first driving motor is started. Belt pulleys are installed on both the driving shaft and the upper first toothed ring, and the driving belt is sleeved between the two belt pulleys. Therefore, when the driving shaft rotates, the upper first gear can be driven to rotate synchronously through the driving belt. Then, when the ash discharging shaft and the ash discharging plate rotate to open the ash discharging channel, the second gear coaxially fixed with the driving shaft drives the second toothed ring to rotate. Then, the second toothed ring drives the fixing plate to move in a circular motion inside the box body. Then, the connecting shaft, the rotating shaft, the rotating rod, the movable rod and the arch breaking knife move in a circular motion inside the box body, covering the entire cross-section of the ash hopper, avoiding arch breaking blind areas, enabling it to directly cut and stir the accumulated dust, and destroying the arched structure formed by it. At the same time, when the rotating shaft moves in a circular motion, the third gear meshes with the third toothed ring, realizing the self-rotation of the rotating shaft, the rotating rod, the movable rod and the arch breaking knife, enhancing the cutting and stirring of the locally accumulated dust, combining the self-rotation and the revolution, enabling the dust to be subjected to multi-directional forces, significantly improving the arch breaking efficiency, and significantly enhancing the operation reliability of the bag dust collector.

[0012] A further setting of the present invention is that the second driving assembly includes a mounting frame fixedly installed on the outer wall surface of the ash discharge cylinder. A second driving motor is fixedly installed on the mounting frame, and a fourth gear meshing with the first gear ring in the lower layer is fixed to the output end of the second driving motor.

[0013] By adopting the above technical solution, the second driving motor drives the fourth gear to rotate, and then the fourth gear drives the first gear ring in the lower layer to rotate, so that the first gear in the lower layer rotates, driving a plurality of first gears meshing therewith to rotate. Further, a plurality of ash discharge shafts and ash discharge plates rotate to open the ash discharge channel, so that the dust accumulated in the ash discharge channel is discharged for subsequent treatment.

[0014] A further setting of the present invention is that the fixing plate is provided with a sliding hole for the connecting shaft to slide and a limiting hole communicating with the sliding hole. A limiting block sliding in the limiting hole is fixed to the connecting shaft. A first limiting groove is fixed to the inner wall surface of the box body in a ring shape. A first limiting rod with an end sliding in the first limiting groove is fixed to the connecting shaft. The first limiting groove is in a fluctuating shape on the inner wall surface of the box body. When the first limiting rod moves circumferentially around the inside of the box body, it drives the connecting shaft to move up and down on the fixing plate. When the third gear ring moves up and down with the connecting shaft, the rotating shaft and the third gear, it always meshes with the third gear.

[0015] By adopting the above technical solution, when the connecting shaft, the rotating shaft, the rotating rod, the movable rod and the arch-breaking knife move in a circular motion in the box body, since the end of the first limiting rod is embedded and slides in the first limiting groove, under the guidance of the first limiting groove, the first limiting rod, the connecting shaft, the rotating shaft, the rotating rod, the movable rod and the arch-breaking knife reciprocate up and down in the box body and the hopper body, further increasing the stirring coverage area of the arch-breaking knife and the rotating rod, and further significantly improving the arch-breaking efficiency; the length of the teeth on the third gear ring is such that when the third gear moves up and down driven by the rotating shaft, it can always mesh with the third gear ring.

[0016] A further setting of the present invention is that the lengths of the plurality of rotating rods are set to be from long to short from top to bottom. An activity cavity for the movable rod to slide is provided in the rotating rod. A telescopic spring is fixed between one end of the movable rod located in the activity cavity and the inner wall surface of the activity cavity. A scraping surface is provided at one end of the arch-breaking knife away from the movable rod, and the scraping surface always abuts against the inner wall surface of the ash hopper under the push of the telescopic spring.

[0017] By adopting the above technical solution, when the scraping surface enables the arch-breaking knife to move in a circular motion within the hopper body, the dust adhering to the inner wall surface of the hopper body can be scraped off, improving the thoroughness of ash discharge and facilitating the smooth fall of dust; even when the first limiting rod, the connecting shaft, the rotating shaft, the rotating rod, the movable rod and the arch-breaking knife reciprocate up and down within the box body and the hopper body, and the distance between the end of the rotating rod with different lengths and the inner wall surface of the hopper body changes, the telescopic spring can always push the arch-breaking knife at the end of the movable rod to be in contact with the inner wall surface of the hopper body, that is, the scraping surface is always in contact with the inner wall surface of the hopper body, scraping off the dust adhering to the inner wall surface of the hopper body. At the same time, since the scraping surface also reciprocates up and down, it can also cover the inner wall surface of the hopper body to achieve efficient dust scraping work.

[0018] A further setting of the present invention is that a baffle is fixed at one end of the ash discharge shaft extending out of the ash discharge cylinder. The first gear is located between the baffle and the ash discharge plate. Connecting frames are respectively fixed on the outer sides of the lower-layer first tooth ring and the second tooth ring, and a knocking component for knocking the baffle is installed on the connecting frame.

[0019] By adopting the above technical solution, when the ash discharge plate rotates to open the ash discharge channel, the knocking component knocks the baffle. Therefore, vibrations are generated on the baffle, the ash discharge shaft, the ash discharge plate, the inner wall of the box body and the inner wall of the ash collection hopper, loosening the dust adhering to the ash discharge plate and further loosening the dust adhering to the inner wall. At the same time, it also helps the dust in the hopper body or the ash discharge channel to collapse, facilitating the discharge of dust from the ash discharge channel and ensuring the smoothness of ash discharge.

[0020] A further setting of the present invention is that the knocking component includes a first transmission shaft rotatably connected to the connecting frame. A fifth gear and a first bevel gear are respectively fixed at both ends of the first transmission shaft. Fourth tooth rings meshing with the two fifth gears are respectively fixed on the outer walls of the box body and the ash discharge cylinder. A second transmission shaft is rotatably connected to the connecting frame. A second bevel gear meshing with the first bevel gear and a turntable are respectively fixed at both ends of the second transmission shaft. A second limiting groove is provided on the turntable. A knocking rod close to the turntable is slidably connected to the connecting frame. A second limiting rod sliding in the second limiting groove is rotatably connected to the knocking rod. A knocking block for knocking the baffle is fixed at the end of the knocking rod.

[0021] By adopting the above technical solution, when the second toothed ring or the first toothed ring located in the lower layer rotates, it drives the connecting frame to move circumferentially outside the box body and the ash hopper. The fifth gear on the connecting frame fixed to the second toothed ring meshes with the fourth toothed ring on the outer wall of the box body, and the fifth gear on the connecting frame fixed to the first toothed ring in the lower layer meshes with the fourth toothed ring on the outer wall of the ash discharge cylinder, causing the first transmission shaft to rotate on its own axis on the connecting frame. Furthermore, the first bevel gear fixed coaxially with the first transmission shaft rotates, driving the second bevel gear meshing with it to rotate. Furthermore, the turntable fixed coaxially with the second bevel gear rotates, driving the knocking rod and the knocking block to reciprocate up and down through the second limiting groove to knock the baffle plate, causing vibrations on the baffle plate, the ash discharge shaft, the ash discharge plate, the inner wall of the box body, and the inner wall of the ash hopper, loosening the dust adhered to the ash discharge plate and further loosening the dust adhered to the inner wall.

[0022] A further setting of the present invention is that a limiting frame is fixed on the connecting frame, and the knocking rod is inserted and slidably arranged in the limiting frame.

[0023] By adopting the above technical solution, the knocking rod slides stably on the limiting frame, so that the knocking rod and the knocking block stably knock the stop block.

[0024] A further setting of the present invention is that the second limiting groove is divided into a staying section and a knocking section. The staying section is an arc groove arranged circumferentially around the turntable evenly, and the knocking section is an arc groove with the middle section approaching the center of the turntable, so as to be able to drive the knocking rod and the knocking block to lift and knock the baffle plate.

[0025] By adopting the above technical solution, when the turntable rotates, it drives the knocking rod and the knocking block to lift through the second limiting groove and the second limiting rod. When the turntable rotates and the second limiting rod is embedded in the staying section, the second limiting rod, the knocking rod, and the knocking block are far away from the baffle plate. When the second limiting rod is embedded in the knocking section, the second limiting rod, the knocking rod, and the knocking block approach the baffle plate and knock the baffle plate, loosening the dust adhered to the ash discharge plate.

[0026] The beneficial effects of the present invention are:

[0027] 1. The arch-breaking assembly drives the rotating shaft to rotate and lift, so that the rotating shaft, the rotating rod, the movable rod, and the arch-breaking knife rotate to directly cut and stir the accumulated dust, destroying the arched structure formed by it, ensuring the smooth falling and discharging of the dust, and guaranteeing the stable operation of the dust removal system;

[0028] 2. By setting two groups of ash discharge assemblies and adopting an alternating opening and closing design, intermittent but continuous ash discharge is realized, avoiding excessive ash accumulation or bridging in the ash hopper. At the same time, it can ensure that one group of ash discharge assemblies is always in a closed state during ash discharge, effectively isolating the internal and external airflows, maintaining the airtightness of the system, and also reducing dust diffusion, which is more in line with environmental protection requirements;

[0029] 3. The connecting shaft, rotating shaft, rotating rod, movable rod and arch-breaking knife move in a circular motion within the box body, covering the entire cross-section of the ash hopper, avoiding arch-breaking blind spots, enabling direct cutting and agitation of the accumulated dust, destroying the arched structure formed thereby. Meanwhile, when the rotating shaft moves in a circular motion, the third gear meshes with the third toothed ring, realizing the self-rotation of the rotating shaft, rotating rod, movable rod and arch-breaking knife, enhancing the cutting and agitation of the locally accumulated dust, combining self-rotation with revolution, subjecting the dust to multi-directional forces, significantly improving the arch-breaking efficiency, and significantly enhancing the operating reliability of the bag filter.

[0030] 4. Under the guidance of the first limiting groove, the first limiting rod reciprocates up and down with the connecting shaft, rotating shaft, rotating rod, movable rod and arch-breaking knife within the box body and the hopper body, further increasing the agitation coverage area of the arch-breaking knife and the rotating rod, and further significantly improving the arch-breaking efficiency.

[0031] 5. The scraping surface can scrape off the dust adhering to the inner wall surface of the hopper body when the arch-breaking knife moves in a circular motion within the hopper body, improving the thoroughness of ash discharge and facilitating the smooth falling of the dust.

[0032] 6. When the ash discharge plate rotates to open the ash discharge channel, the knocking assembly knocks the baffle plate, so vibrations are generated on the baffle plate, ash discharge shaft, ash discharge plate, inner wall of the box body and inner wall of the ash collection hopper, loosening the dust adhering to the ash discharge plate, further loosening the dust adhering to the inner wall, and at the same time helping the dust in the hopper body or ash discharge channel to collapse, promoting the discharge of the dust from the ash discharge channel and ensuring the smoothness of ash discharge. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0034] Figure 1 It is a schematic structural diagram of the present invention.

[0035] Figure 2 is Figure 1 The enlarged view at A in

[0036] Figure 3 is Figure 1 The enlarged view at B in

[0037] Figure 4 It is a schematic side sectional view structure of the present invention.

[0038] Figure 5 is Figure 4 The enlarged view at C in

[0039] Figure 6 It is a schematic top sectional view structure of the present invention.

[0040] In the figure, 1 is the frame; 2 is the main body of the dust removal box; 201 is the box body; 202 is the ash collecting hopper; 202a is the hopper body; 202b is the ash discharging cylinder; 3 is the rotating shaft; 4 is the arch breaking assembly; 401 is the second toothed ring; 402 is the fixing plate; 403 is the connecting shaft; 404 is the third toothed ring; 405 is the third gear; 406 is the limiting hole; 407 is the sliding hole; 408 is the limiting block; 409 is the first limiting groove; 410 is the first limiting rod; 411 is the telescopic spring; 412 is the scraping surface; 5 is the rotating rod; 6 is the movable rod; 7 is the arch breaking knife; 8 is the ash discharging assembly; 801 is the fixing frame; 802 is the first toothed ring; 803 is the fixed shaft; 804 is the ash discharging shaft; 805 is the ash discharging plate; 806 is the first gear; 9 is the knocking assembly; 901 is the first transmission shaft; 902 is the fifth gear; 903 is the first bevel gear; 904 is the fourth toothed ring; 905 is the knocking block; 906 is the second bevel gear; 907 is the turntable; 908 is the second limiting groove; 908a is the staying section; 908b is the knocking section; 909 is the knocking rod; 910 is the second limiting rod; 10 is the ash discharging channel; 11 is the first driving assembly; 111 is the driving frame; 112 is the driving shaft; 113 is the first driving motor; 114 is the driving belt; 115 is the second gear; 12 is the second driving assembly; 121 is the mounting frame; 122 is the second driving motor; 123 is the fourth gear; 13 is the baffle; 14 is the connecting frame; 15 is the limiting frame. Specific embodiments

[0041] The technical solutions of the present invention will be clearly and completely described below in conjunction with specific embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts shall fall within the scope of protection of the present invention.

[0042] Embodiment 1, a bag type dust collector ash discharging device, as Figures 1-6 shown, includes a frame 1 and a dust removal box main body 2 fixed to the frame 1. The dust removal box main body 2 includes a box body 201 and an ash collecting hopper 202 communicating with the box body 201 and fixed to the bottom end of the box body 201. The ash collecting hopper 202 includes a hopper body 202a and an ash discharging cylinder 202b fixedly communicating with the bottom end of the hopper body 202a. A rotating shaft 3 is rotatably connected in the hopper body 202a. A plurality of rotating rods 5 are fixedly connected to the rotating shaft 3 along its axial direction. One end of the rotating rod 5 away from the rotating shaft 3 is slidably connected with a movable rod 6. One end of the movable rod 6 away from the rotating rod 5 is fixed with an arch breaking knife 7. The dust removal box main body 2 is provided with an arch breaking assembly 4 for driving the rotating shaft 3 to rotate and lift.

[0043] Further, the inner cavity of the ash discharge cylinder 202b is an ash discharge passage 10. Two sets of ash discharge assemblies 8 are arranged in the ash discharge passage 10 from top to bottom. The ash discharge assembly 8 includes a fixing frame 801 fixed to the inner wall surface of the ash discharge cylinder 202b and a first toothed ring 802 rotatably connected to the outside of the ash discharge cylinder 202b. A fixing shaft 803 located in the middle of the ash discharge passage 10 is fixed in the middle of the fixing frame 801. A plurality of ash discharge shafts 804 are rotatably connected between the wall surface of the ash discharge cylinder 202b and the fixing shaft 803. The plurality of ash discharge shafts 804 are circumferentially and evenly arranged around the inner wall surface of the ash discharge cylinder 202b. Ash discharge plates 805 are fixed on the ash discharge shafts 804. When the plurality of ash discharge plates 805 are in a horizontal state, the ash discharge passage 10 is closed. The end of the ash discharge shaft 804 rotatably extends out of the ash discharge cylinder 202b and is fixed with a first gear 806 meshing with the first toothed ring 802. The first toothed ring 802 located in the upper layer is driven to rotate by a first driving assembly 11, and the first toothed ring 802 located in the lower layer is driven to rotate by a second driving assembly 12.

[0044] Further, the arch breaking assembly 4 includes a second toothed ring 401 rotatably connected to the box body 201. A fixing plate 402 located inside the box body 201 is fixed to the inner wall surface of the second toothed ring 401. A connecting shaft 403 is slidably connected to the fixing plate 402. The rotating shaft 3 is rotatably connected to the bottom end of the connecting shaft 403. The first driving assembly 11 includes a driving frame 111 fixed outside the dust removal box body 2. A driving shaft 112 is rotatably connected to the driving frame 111. A first driving motor 113 for driving the driving shaft 112 to rotate is fixed to the driving frame 111. A driving belt 114 is sleeved between the driving shaft 112 and the first toothed ring 802 located in the upper layer. A second gear 115 meshing with the second toothed ring 401 is fixed to the driving shaft 112. A third toothed ring 404 is fixed to the inner wall surface of the box body 201. A third gear 405 meshing with the third toothed ring 404 is fixed to the rotating shaft 3.

[0045] Further, the second driving assembly 12 includes a mounting frame 121 fixedly installed on the outer wall surface of the ash discharge cylinder 202b. A second driving motor 122 is fixedly installed on the mounting frame 121. The output end of the second driving motor 122 is fixed with a fourth gear 123 meshing with the first toothed ring 802 in the lower layer.

[0046] Further, the fixing plate 402 is provided with a sliding hole 407 for the connecting shaft 403 to slide and a limiting hole 406 communicating with the sliding hole 407. A limiting block 408 that slides in the limiting hole 406 is fixed to the connecting shaft 403. A first limiting groove 409 is fixed to the inner wall surface of the box body 201 in a circular shape. A first limiting rod 410 whose end slides in the first limiting groove 409 is fixed to the connecting shaft 403. The first limiting groove 409 is in a fluctuating shape on the inner wall surface of the box body 201. When the first limiting rod 410 moves circumferentially around the inside of the box body 201, it drives the connecting shaft 403 to move up and down on the fixing plate 402. When the third toothed ring 404, the connecting shaft 403, the rotating shaft 3 and the third gear 405 move up and down, the third toothed ring 404 is always meshed with the third gear 405.

[0047] Further, the lengths of the plurality of rotating rods 5 are set to be from long to short from top to bottom. An activity cavity for the activity rod 6 to slide is provided in the rotating rod 5. A telescopic spring 411 is fixed between one end of the activity rod 6 located in the activity cavity and the inner wall surface of the activity cavity. A scraping surface 412 is provided at one end of the arch-breaking knife 7 away from the activity rod 6. The scraping surface 412 is always in contact with the inner wall surface of the ash hopper under the push of the telescopic spring 411.

[0048] Further, a baffle 13 is fixed to one end of the ash discharge shaft 804 extending out of the ash discharge cylinder 202b. The first gear 806 is located between the baffle 13 and the ash discharge plate 805. Connecting frames 14 are respectively fixed to the outer sides of the lower-layer first toothed ring 802 and the second toothed ring 401. A knocking assembly 9 for knocking the baffle 13 is installed on the connecting frame 14.

[0049] Further, the knocking assembly 9 includes a first transmission shaft 901 rotatably connected to the connecting frame 14. A fifth gear 902 and a first bevel gear 903 are respectively fixed to both ends of the first transmission shaft 901. Fourth toothed rings 904 that respectively mesh with the two fifth gears 902 are fixed to the outer walls of the box body 201 and the ash discharge cylinder 202b. A second transmission shaft is rotatably connected to the connecting frame 14. A second bevel gear 906 and a turntable 907 that mesh with the first bevel gear 903 are respectively fixed to both ends of the second transmission shaft. A second limiting groove 908 is provided on the turntable 907. A knocking rod 909 close to the turntable 907 is slidably connected to the connecting frame 14. A second limiting rod 910 that slides in the second limiting groove 908 is rotatably connected to the knocking rod 909. A knocking block 905 for knocking the baffle 13 is fixed to the end of the knocking rod 909.

[0050] Further, a limiting frame 15 is fixed to the connecting frame 14. The knocking rod 909 is inserted and slid in the limiting frame 15.

[0051] Further, the second limiting groove 908 is divided into a staying section 908a and a knocking section 908b. The staying section 908a is set as an arc groove evenly arranged circumferentially around the turntable 907. The knocking section 908b is set as an arc groove whose middle section approaches the center of the turntable 907, so as to be able to drive the knocking rod 909 and the knocking block 905 to move up and down to knock the baffle 13.

[0052] Working principle of the present invention: When discharging ash, the first driving motor 113 is started. Belt pulleys are installed on both the driving shaft 112 and the upper first toothed ring 802. The driving belt 114 is sleeved between the two belt pulleys. Therefore, when the driving shaft 112 rotates, the upper first gear 806 can be driven to rotate synchronously through the driving belt 114. Then, the rotation of the upper first toothed ring 802 drives a plurality of first gears 806 meshing with it to rotate. Further, a plurality of ash discharge shafts 804 and ash discharge plates 805 rotate to open the ash discharge channel 10. During this period, the second gear 115 coaxially fixed with the driving shaft 112 drives the second toothed ring 401 to rotate. Then, the second toothed ring 401 drives the fixing plate 402 to move in a circular motion inside the box body 201. Further, the connecting shaft 403, the rotating shaft 3, the rotating rod 5, the movable rod 6 and the arch-breaking knife 7 move in a circular motion inside the box body 201, covering the entire cross-section of the ash hopper, avoiding the arch-breaking blind area, enabling it to directly cut and stir the accumulated dust, and destroying the arched structure formed by the dust. At the same time, when the rotating shaft 3 moves in a circular motion, the third gear 405 meshes with the third toothed ring 404, realizing the self-rotation of the rotating shaft 3, the rotating rod 5, the movable rod 6 and the arch-breaking knife 7, enhancing the cutting and stirring of the locally accumulated dust. And because the end of the first limiting rod 410 is embedded and slides in the first limiting groove 409, under the guidance of the first limiting groove 409, the first limiting rod 410, the connecting shaft 403, the rotating shaft 3, the rotating rod 5, the movable rod 6 and the arch-breaking knife 7 reciprocally lift in the box body 201 and the hopper body 202a, further increasing the stirring coverage area of the arch-breaking knife 7 and the rotating rod 5. The scraping surface 412 can scrape off the dust adhering to the inner wall surface of the hopper body 202a when the arch-breaking knife 7 moves in a circular motion inside the hopper body 202a, improving the thoroughness of ash discharge and promoting the smooth falling of the dust; and when the second toothed ring 401 rotates, it drives the connecting frame 14 to move in a circular motion outside the box body 201. The fifth gear 902 on the connecting frame 14 fixed to the second toothed ring 401 meshes with the fourth toothed ring 904 on the outer wall of the box body 201, enabling the first transmission shaft 901 to rotate on the connecting frame 14. Then, the first bevel gear 903 coaxially fixed with the first transmission shaft 901 rotates, driving the second bevel gear 906 meshing with it to rotate. Further, the turntable 907 coaxially fixed with the second bevel gear 906 rotates, driving the knocking rod 909 and the knocking block 905 to reciprocally lift and knock the baffle 13 through the second limiting groove 908, causing vibrations on the baffle 13, the ash discharge shaft 804, the ash discharge plate 805, the inner wall of the box body 201 and the inner wall of the dust collecting hopper 202, loosening the dust adhering to the ash discharge plate 805 and further loosening the dust adhering to the inner wall, and finally enabling the dust scattered in the hopper body 202a to first fall into the ash discharge channel 10 between the two groups of ash discharge assemblies 8;

[0053] Then, the first driving motor 113 stops driving the upper first toothed ring 802 to rotate. At this time, the ash discharging plate 805 in the upper ash discharging assembly 8 closes the channel between the hopper body 202a and the ash discharging cylinder 202b. The second driving motor 122 is started. The second driving motor 122 drives the fourth gear 123 to rotate, and then the fourth gear 123 drives the lower first toothed ring 802 to rotate. Thus, the lower first gear 806 rotates, driving a plurality of first gears 806 meshing therewith to rotate. Further, a plurality of ash discharging shafts 804 and ash discharging plates 805 rotate to open the ash discharging channel 10, so that the dust accumulated in the ash discharging channel 10 is discharged for subsequent processing. During the rotation of the lower first toothed ring 802, the connecting frame 14 is driven to move circumferentially around the ash discharging cylinder 202b. The fifth gear 902 on the connecting frame 14 fixed to the lower first toothed ring 802 meshes with the fourth toothed ring 904 on the outer wall of the ash discharging cylinder 202b, causing the first transmission shaft 901 to rotate on its own axis on the connecting frame 14. Further, the first bevel gear 903 fixed coaxially with the first transmission shaft 901 rotates, driving the second bevel gear 906 meshing therewith to rotate. Further, the turntable 907 fixed coaxially with the second bevel gear 906 rotates, driving the knocking rod 909 and the knocking block 905 to reciprocate up and down to knock the baffle 13, so that vibrations are generated on the baffle 13, the ash discharging shaft 804, the ash discharging plate 805, the inner wall of the box body 201 and the inner wall of the ash collecting hopper 202, loosening the dust on the ash discharging plate 805 and improving the dust discharge efficiency.

[0054] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made in these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A dust discharging device for a bag filter, comprising a frame (1) and a dust removal box body (2) fixed to the frame (1). The dust removal box body (2) includes a box body (201) and a dust collecting hopper (202) connected to the box body (201) and fixed to the bottom end of the box body (201), and is characterized in that: The ash hopper (202) includes a hopper body (202a) and an ash discharge cylinder (202b) fixedly connected to the bottom end of the hopper body (202a). A rotating shaft (3) is rotatably connected inside the hopper body (202a). A plurality of rotating rods (5) are fixedly connected to the rotating shaft (3) along its axial direction. One end of the rotating rod (5) away from the rotating shaft (3) is slidably connected to a movable rod (6). A bursting arch knife (7) is fixed to one end of the movable rod (6) away from the rotating rod (5). The dust removal box body (2) is provided with a bursting arch assembly (4) for driving the rotation and lifting of the rotating shaft (3).

2. The ash discharging device of a bag filter according to claim 1, characterized in that: The inner cavity of the ash discharge cylinder (202b) is an ash discharge channel (10). Two groups of ash discharge assemblies (8) are arranged in the ash discharge channel (10) from top to bottom. The ash discharge assembly (8) includes a fixed frame (801) fixed to the inner wall surface of the ash discharge cylinder (202b) and a first toothed ring (802) rotatably connected outside the ash discharge cylinder (202b). A fixed shaft (803) located in the middle of the ash discharge channel (10) is fixed in the middle of the fixed frame (801). A plurality of ash discharge shafts (804) are rotatably connected between the wall surface of the ash discharge cylinder (202b) and the fixed shaft (803). The plurality of ash discharge shafts (804) are circumferentially and uniformly arranged around the inner wall surface of the ash discharge cylinder (202b). Ash discharge plates (805) are fixed on the ash discharge shafts (804). When the plurality of ash discharge plates (805) are in a horizontal state, the ash discharge channel (10) is closed. The end of the ash discharge shaft (804) rotatably extends out of the ash discharge cylinder (202b) and is fixed with a first gear (806) meshing with the first toothed ring (802). The first toothed ring (802) located in the upper layer is driven to rotate by a first driving assembly (11), and the first toothed ring (802) located in the lower layer is driven to rotate by a second driving assembly (12).

3. The ash discharging device of a bag filter according to claim 2, characterized in that: The bursting arch assembly (4) includes a second toothed ring (401) rotatably connected to the box body (201). A fixing plate (402) located inside the box body (201) is fixed to the inner wall surface of the second toothed ring (401). A connecting shaft (403) is slidably connected to the fixing plate (402). The rotating shaft (3) is rotatably connected to the bottom end of the connecting shaft (403). The first driving assembly (11) includes a driving frame (111) fixed outside the dust removal box body (2). A driving shaft (112) is rotatably connected to the driving frame (111). A first driving motor (113) for driving the driving shaft (112) to rotate is fixed to the driving frame (111). A driving belt (114) is sleeved between the driving shaft (112) and the first toothed ring (802) located in the upper layer. A second gear (115) meshing with the second toothed ring (401) is fixed to the driving shaft (112). A third toothed ring (404) is fixed to the inner wall surface of the box body (201). A third gear (405) meshing with the third toothed ring (404) is fixed to the rotating shaft (3).

4. A dust discharging device for a bag filter according to claim 2, characterized in that: The second driving component (12) includes a mounting bracket (121) fixedly installed on the outer wall surface of the ash discharge cylinder (202b). A second driving motor (122) is fixedly installed on the mounting bracket (121). A fourth gear (123) meshing with the lower-layer first toothed ring (802) is fixed to the output end of the second driving motor (122).

5. The ash discharging device of a bag filter according to claim 3, characterized in that: A sliding hole (407) for the sliding of the connecting shaft (403) and a limiting hole (406) communicating with the sliding hole (407) are provided on the fixing plate (402). A limiting block (408) sliding in the limiting hole (406) is fixed to the connecting shaft (403). A first limiting groove (409) is fixed to the inner wall surface of the box body (201) in a circular shape. A first limiting rod (410) with an end sliding in the first limiting groove (409) is fixed to the connecting shaft (403). The first limiting groove (409) is in a fluctuating shape on the inner wall surface of the box body (201). When the first limiting rod (410) moves circumferentially around the inside of the box body (201), it drives the connecting shaft (403) to move up and down on the fixing plate (402). When the third toothed ring (404), the rotating shaft (3) and the third gear (405) move up and down, the third toothed ring (404) always meshes with the third gear (405).

6. The ash discharging device of a bag filter according to claim 5, characterized in that: The lengths of the plurality of rotating rods (5) are set to be from long to short from top to bottom. An activity cavity for the sliding of the activity rod (6) is provided in the rotating rod (5). A telescopic spring (411) is fixed between one end of the activity rod (6) located in the activity cavity and the inner wall surface of the activity cavity. A scraping surface (412) is provided at one end of the arch-breaking knife (7) away from the activity rod (6). The scraping surface (412) always abuts against the inner wall surface of the ash hopper under the push of the telescopic spring (411).

7. The ash discharge device of a bag filter according to claim 3, characterized in that: A baffle (13) is fixed to one end of the ash discharge shaft (804) extending out of the ash discharge cylinder (202b). The first gear (806) is located between the baffle (13) and the ash discharge plate (805). Connecting brackets (14) are respectively fixed to the outside of the lower-layer first toothed ring (802) and the outside of the second toothed ring (401). A knocking component (9) for knocking the baffle (13) is installed on the connecting bracket (14).

8. The ash discharging device of a bag filter according to claim 7, characterized in that: The knocking component (9) includes a first transmission shaft (901) rotatably connected to the connecting frame (14). A fifth gear (902) and a first bevel gear (903) are respectively fixed at both ends of the first transmission shaft (901). Fourth toothed rings (904) that respectively mesh with the two fifth gears (902) are fixed on the outer wall of the box body (201) and the outer wall of the ash discharge cylinder (202b). A second transmission shaft is rotatably connected to the connecting frame (14). A second bevel gear (906) meshing with the first bevel gear (903) and a turntable (907) are respectively fixed at both ends of the second transmission shaft. A second limiting groove (908) is provided on the turntable (907). A knocking rod (909) close to the turntable (907) is slidably connected to the connecting frame (14). A second limiting rod (910) that slides in the second limiting groove (908) is rotatably connected to the knocking rod (909). A knocking block (905) for knocking the baffle (13) is fixed at the end of the knocking rod (909).

9. The ash discharging device of a bag filter according to claim 8, characterized in that: A limiting frame (15) is fixed on the connecting frame (14). The knocking rod (909) is inserted and slid in the limiting frame (15).

10. A dust discharging device for a bag filter according to claim 8, characterized in that: The second limiting groove (908) is divided into a staying section (908a) and a knocking section (908b). The staying section (908a) is an arc groove circumferentially and evenly arranged around the turntable (907). The knocking section (908b) is an arc groove with the middle section approaching the center of the turntable (907), so as to drive the knocking rod (909) and the knocking block (905) to lift and knock the baffle (13).

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