CN214130725U

CN214130725U - Cloth bag type dust removing device capable of automatically cleaning dust removing filter bag

Info

Publication number: CN214130725U
Application number: CN202022564760.9U
Authority: CN
Inventors: 徐春青
Original assignee: Wuhan Chenxin Fluid Control Environmental Protection Equipment Co ltd
Current assignee: Wuhan Chenxin Fluid Control Environmental Protection Equipment Co ltd
Priority date: 2020-11-09
Filing date: 2020-11-09
Publication date: 2021-09-07
Anticipated expiration: 2030-11-09

Abstract

The utility model provides a cloth bag type dust collector for automatically cleaning dust-removing filter bags, which comprises a dust collector body, a filter chamber is arranged in the dust collector body, the filter chamber is connected with a blowing dust-removing device, the lower end of the filter chamber is provided with an ash bucket, the ash bucket comprises an ash collecting body and an ash discharging pipe which are coaxially and fixedly connected from top to bottom, the ash collecting body is in a cone shape, the lower end of the ash discharging pipe is provided with an ash discharging valve, a cleaning device is arranged in the ash collecting body, the outer surface of the upper end of the ash collecting body is welded with a supporting plate, the upper surface of the supporting plate is fixedly provided with a motor through a bolt, the cleaning device comprises a driving rod, the right end of the driving rod penetrates through the ash collecting body, and one end of the driving rod is coaxially connected with the motor, and a first cleaning part is arranged to clean and scrape the dust above the inner part of the ash collecting body; the second cleaning part can move up and down in the ash collecting body to clean the ash layer on the inner wall.

Description

Cloth bag type dust removing device capable of automatically cleaning dust removing filter bag

Technical Field

The utility model belongs to the technical field of the sack formula dust collector equipment, concretely relates to automatic clear up sack formula dust collector of dust removal filter bag.

Background

The dust removing cloth bag can be called as a heart of a bag type dust remover and is generally called as a dust removing cloth bag or a dust removing filter bag, the dust removing cloth bag is a key part in the operation process of the bag type dust remover, usually, a cylindrical filter bag is vertically hung in the dust remover, the fabric and the design of the dust removing cloth bag are required to seek high-efficiency filtering, easy dust stripping and durable effects as much as possible, after a filter material is used for a period of time, due to the effects of screening, collision, detention, diffusion, static electricity and the like, a layer of dust is accumulated on the surface of the filter bag and is called as a primary layer, in the later movement process, the primary layer becomes a main filter layer of the filter material, the filter material with larger meshes can obtain higher filtering efficiency by virtue of the action of the primary layer, along with the accumulation of the dust on the surface of the filter material, the efficiency and the resistance of the dust remover are correspondingly increased, when the pressure difference between two sides is large, some fine dust particles attached to the filter material can be extruded, the efficiency of the dust remover is reduced, and in addition, the air volume of a dust removing system is obviously reduced due to overhigh resistance of the dust remover, so that dust is removed in time after the resistance of the dust remover reaches a certain numerical value, and an initial layer cannot be damaged during dust removal, so that the efficiency is prevented from being reduced;

when the existing bag-type dust remover is used for removing dust, a large amount of dust is accumulated on the inner wall of the dust collecting hopper, and when water vapor in the air is agglomerated, the dust is not easy to fall off, and if the dust cannot be timely cleaned, the bag-type dust removing effect can be influenced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an automatic cloth bag dust collector of clearance dust bag aims at the problem that can be effectual among the solution prior art.

In order to achieve the above object, the utility model provides a following technical scheme:

a bag-type dust collector capable of automatically cleaning dust-removing filter bags comprises a dust collector body, wherein a filter chamber is arranged in the dust collector body, the filter chamber is connected with a blowing dust-removing device, an ash hopper is arranged at the lower end of the filter chamber, the ash hopper comprises an ash collecting body and an ash discharging pipe which are coaxially and fixedly connected from top to bottom, the ash collecting body is in a cone shape, an ash discharging valve is arranged at the lower end of the ash discharging pipe, a cleaning device is arranged in the ash collecting body, a supporting plate is welded on the outer surface of the upper end of the ash collecting body, a motor is fixedly mounted on the upper surface of the supporting plate through bolts, the cleaning device comprises a driving rod, the right end of the driving rod penetrates through the ash collecting body, one end of the driving rod is coaxially connected with the motor, a first filter screen and a second filter screen are movably embedded at an air inlet and an air outlet, and, the second filter screen that sets up can carry out the secondary to the gas after filtering, and different mesh numbers can be changed according to actual conditions to first filter screen and second filter screen to satisfy different filtration needs.

As an optimization, be provided with filter equipment in the filter chamber, filter chamber outside lateral wall corresponds filter equipment position department and has seted up the access hole, the access hole outside has the access door through the articulated access door of hinge pin, filter equipment includes the backup pad and a plurality of can dismantle the filter bag of connecting in the backup pad lower surface, the filter bag outside all is equipped with the bag cage, the bag cage lower extreme is a little higher than the access hole lower extreme, the bag cage can be dismantled and connect in the backup pad.

As an optimization, jetting ash removal device includes a pair of mounting panel, and is a pair of the mounting panel passes through bolt and filter chamber outside lateral wall fixed connection, and is located the below of access hole, it is a pair of fixedly connected with gas holder between the mounting panel, the equidistance is provided with the spray tube on the gas holder, the spray tube shaping in the backup pad, and the lower terminal surface equidistance of spray tube is provided with the nozzle.

As an optimization, be provided with the air intake on the collection ash body, the air intake internalization inlays and is equipped with first filter screen, the filter chamber is kept away from one side of jetting ash removal device is provided with the air outlet, the air outlet internalization inlays and is equipped with the second filter screen.

As an optimization, cleaning device still includes a pair of support frame and bottom plate, the coaxial setting of actuating lever is between a pair of support frame, and is a pair of terminal surface fixedly connected with first chassis under the support frame, open at first chassis middle part has the through-hole, the through-hole internal rotation is connected with the axis of rotation, the lower extreme and the bottom plate of axis of rotation rotate to be connected, the upper end of axis of rotation cup joints and is fixed with gear an, the coaxial gear b that is provided with on the actuating lever, gear an and gear b meshing are connected, are located coaxial first clean portion that is provided with in the axis of rotation under the first chassis is located coaxial the clean portion of second that is provided with in the axis of rotation between first clean portion and the bottom plate.

As an optimization of the present invention, the first cleaning portion includes a first connecting ring, a first scraping ring and a telescopic rod a, and the first scraping ring is provided with a circle of rubber layer a 4521.

As an optimization, the clean portion of second includes the second chassis, it has a pair of circular notch to open on the second chassis, and is a pair of the circular notch runs through in the circular notch has a pair of connecting rod, and is a pair of be connected with the connecting plate between the bottom of connecting rod, one side of connecting plate is connected with the gyro wheel through the bearing vertical rotation, is located the coaxial cam that is provided with in the axis of rotation of bottom plate top, the gyro wheel shaping in the cam upper surface, and the cam passes through locking bolt and axis of rotation fixed connection, the upper end fixedly connected with second go-between of a pair of connecting rod, the second go-between is connected with the second through telescopic link b and scrapes the ring, the second scrapes the ring outer lane and is provided with round rubber layer b.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses inlay with the equal activity in air outlet department at the air intake and be equipped with first filter screen and second filter screen, the first filter screen of setting can be treated filtering gas and just strain, and the second filter screen of setting can carry out secondary filter to the gas after filtering, and first filter screen and second filter screen can change different mesh numbers according to actual conditions to satisfy different filtration needs.

2. The utility model discloses the jetting ash removal device that sets up, when needs are clearing up the dust to the filter bag, set up many spray tubes above the backup pad and can pass through the nozzle with the high-pressure gas in the gas holder and directly spout to the filter bag perpendicularly to clear up the dust on the filter bag from the filter bag and get off, and simple structure, convenient to use.

3. The first cleaning part arranged in the utility model can clean and scrape the caking dust above the inner part of the dust collecting body; the second cleaning part can move up and down in the ash collecting body to clean the ash layer on the inner wall.

4. The utility model discloses the telescopic link a that sets up can adjust the interval between first scraping ring and the first connecting ring through the guide arm, plays the effect of supporting and restoring to the throne through the expanding spring that sets up to satisfy the collection ash body of different internal diameters, and the rubber layer a that sets up outside first scraping ring is laminated with the inside wall of collection ash body, scrapes the dust of collecting the adhesion of ash body inner wall, and rubber has elasticity, does benefit to and collects the interior wall of dust body and laminates, has improved the effect of striking off to the adhesion dust; simultaneously, the damage of the first scraping ring to the inner wall of the ash collecting body is also reduced.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic front view of the present invention;

FIG. 2 is a schematic side view of the present invention;

FIG. 3 is a schematic structural view of the filtering apparatus of the present invention;

FIG. 4 is a schematic view of the cleaning device of the present invention;

fig. 5 is a schematic view of a second filter screen according to the present invention.

In the figure: 1. a dust collector body; 11. a filtering chamber; 12. a filtration device; 121. a support plate; 122. a filter bag; 123. a bag cage; 13. an access hole; 131. an access door; 2. a blowing ash removal device; 21. mounting a plate; 22. a gas storage tank; 23. a nozzle; 24. a nozzle; 3. an ash hopper; 31. collecting ash; 32. an ash discharging pipe; 33. an ash discharge valve; 4. a cleaning device; 41. a drive rod; 411. a gear b; 42. a support frame; 43. a first chassis; 431. a through hole; 44. a rotating shaft; 441. a gear a; 45. a first cleaning section; 451. a first connecting ring; 452. a first scraper ring; 4521. a rubber layer a; 453. a telescopic rod a; 46. a base plate; 47. A second cleaning section; 471. a second chassis; 4711. a circular notch; 472. a connecting rod; 473. a connecting plate; 474. a bearing; 475. a roller; 476. a cam; 477. locking the bolt; 478. a second connection ring; 479. a telescopic rod b; 48. a second scraper ring; 481. a rubber layer b; 5. a support plate; 6. a motor; 7. an air inlet; 71. a first filter screen; 8. an air outlet; 81. and a second filter screen.

Detailed Description

The technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiment of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention based on the embodiments of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "provided", "sleeved/connected", "connected", and the like are to be understood in a broad sense, such as "connected", which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Examples

As shown in fig. 1-5, a bag-type dust collector for automatically cleaning dust-removing filter bags comprises a dust collector body 1, a filter chamber 11 is arranged in the dust collector body 1, the filter chamber 11 is connected with a blowing dust-removing device 2, the lower end of the filter chamber 11 is provided with an ash bucket 3, the ash bucket 3 comprises an ash collecting body 31 and an ash discharging pipe 32 which are coaxially and fixedly connected from top to bottom, the ash collecting body 31 is conical and funnel-shaped, the lower end of the ash discharging pipe 32 is provided with an ash discharging valve 33, a cleaning device 4 is arranged in the ash collecting body 31, the outer surface of the upper end of the ash collecting body 31 is welded with a supporting plate 5, the upper surface of the supporting plate 5 is fixedly provided with a motor 6 through bolts, the cleaning device 4 comprises a driving rod 41, the right end of the driving rod 41 penetrates through the ash collecting body 31, and the penetrating end of the driving rod is coaxially connected with the motor 6.

In the embodiment of the present invention: in order to separate the dust from the flue gas, a filter chamber 11 is arranged in the dust collector body 1, as the dust collection efficiency and resistance are correspondingly increased along with the accumulation of the dust in the filter chamber 11, the dust collection efficiency is reduced, therefore, a blowing ash cleaning device 2 is connected on the filter chamber 11, the dust accumulated in the filter chamber 11 is cleaned by the blowing ash cleaning device 2 into an ash collecting body 31 and then falls into an ash discharging pipe 32, the ash is discharged by a dust discharging valve 33, as a large amount of dust is accumulated on the inner wall of an ash collecting hopper 3, the dust is agglomerated and is not easy to fall off when encountering the water vapor in the air, and a cleaning device 4 is arranged in the ash collecting body 31 to achieve the cleaning effect.

Specifically, be provided with filter equipment 12 in the filter chamber 11, access hole 13 has been seted up to filter equipment 12 position department in the lateral wall outside the filter chamber 11, it has access door 131 to articulate through the hinge pin in the access hole 13 outside, filter equipment 12 includes backup pad 121 and a plurality of filter bag 122 of connecting in backup pad 121 lower surface of dismantling, the filter bag 122 outside all is equipped with bag cage 123, bag cage 123 lower extreme is a little higher than access hole 13 lower extreme, bag cage 123 can be dismantled and connect in backup pad 121.

In a further embodiment: when filter equipment 12 damaged, can open access hole 13 and overhaul the inside of filter chamber 11, the access door 131 that sets up has the effect of keeping off the ash, is equipped with bag cage 123 in the outside cover of filter bag 122, and the bag cage 123 that sets up can play the guard action to filter bag 122, can also play the effect of location to filter bag 122, and bag cage 123 can be dismantled and connect and can make things convenient for the dismantlement of bag cage 123 to change in backup pad 121.

Specifically, jetting ash removal device 2 includes a pair of mounting panel 21, and is a pair of mounting panel 21 passes through bolt and 11 outside lateral walls fixed connection in filter chamber, and is located the below of access hole 13, it is a pair of fixedly connected with gas holder 22 between mounting panel 21, equidistant spray tube 23 that is provided with on the gas holder 22, spray tube 23 shaping in on the backup pad 121, and the lower terminal surface equidistance of spray tube 23 is provided with nozzle 24.

In a further embodiment: when dust needs to be cleaned from the filter bag 122, the plurality of spray pipes 23 arranged above the support plate 121 can vertically spray high-pressure gas in the gas storage tank 22 to the filter bag 122 through the nozzles 24, so that the dust on the filter bag 122 is cleaned from the filter bag 122, and the dust cleaner is simple in structure and convenient to use.

Specifically, be provided with air intake 7 on the collection grey body 31, first filter screen 71 is inlayed in the air intake 7 internalization, filter chamber 11 is kept away from one side of jetting ash removal device 2 is provided with air outlet 8, second filter screen 81 is inlayed in the air outlet 8 internalization.

In a further embodiment: equal activity in air intake 7 and air outlet 8 department inlays and is equipped with first filter screen 71 and second filter screen 81, and the first filter screen 71 that sets up can be treated and filtered gaseous and just filter the second filter screen 81 that sets up can carry out the secondary to the gas after filtering, and first filter screen 71 and second filter screen 81 can change different mesh according to actual conditions to satisfy different filtration needs.

Specifically, the cleaning device 4 further includes a pair of support frames 42 and a bottom plate 46, the driving rod 41 is coaxially disposed between the pair of support frames 42, a first chassis 43 is fixedly connected to a lower end face of the pair of support frames 42, a through hole 431 is formed in the middle of the first chassis 43, a rotating shaft 44 is rotatably connected to the through hole 431, a lower end of the rotating shaft 44 is rotatably connected to the bottom plate 46, a gear a441 is fixedly sleeved on an upper end of the rotating shaft 44, a gear b411 is coaxially disposed on the driving rod 41, the gear a441 is meshed with the gear b411 and is connected to the gear a441, a first cleaning portion 45 is coaxially disposed on the rotating shaft 44 under the first chassis 43, and a second cleaning portion 47 is coaxially disposed on the rotating shaft 44 between the first cleaning portion 45 and the bottom plate 46.

In a further embodiment: the cleaning device 4 is provided with a motor 6 as a power source, the motor 6 electrically drives the horizontal rotation of the driving rod 41, and the gear b411 and the gear a441 which are arranged on the driving rod 41 are meshed and connected to drive the vertical rotation of the rotating shaft 44.

Specifically, the first cleaning part 45 includes a first connecting ring 451, a first scraping ring 452, and an expansion rod a453, and a rubber layer a4521 is disposed outside the first scraping ring 452.

In a further embodiment: because the first connecting ring 451 and the rotating shaft 44 arranged in the first cleaning part 45 are coaxially arranged, when the rotating shaft 44 rotates, the first cleaning part 45 is driven to rotate, the arranged first scraping ring 452 is fixedly connected with the first connecting ring 451 through the telescopic rod a453, the distance between the first scraping ring 452 and the first connecting ring 451 can be adjusted through the movable end of the telescopic rod a453, so as to meet the requirements of the dust collecting bodies 31 with different inner diameters, the rubber layer a4521 arranged outside the first scraping ring 452 is attached to the inner side wall of the dust collecting body 31, dust adhered to the inner wall of the dust collecting body 31 is scraped, rubber has elasticity, the attachment with the inner wall of the dust collecting body 31 is facilitated, and the scraping effect of the adhered dust is improved; meanwhile, the damage of the first scraper ring 452 to the inner wall of the ash collecting body 31 is also reduced.

Specifically, the second cleaning portion 47 includes a second base plate 471, a pair of circular notches 4711 is formed on the second base plate 471, a pair of connecting rods 472 penetrate through the pair of circular notches 4711, a connecting plate 473 is connected between bottoms of the pair of connecting rods 472, a roller 475 is vertically and rotatably connected to one side of the connecting plate 473 through a bearing 474, a cam 476 is coaxially disposed on the rotating shaft 44 above the base plate 46, the roller 475 is formed on an upper surface of the cam 476, the cam 476 is fixedly connected to the rotating shaft 44 through a locking bolt 477, a second connecting ring 478 is fixedly connected to an upper end of the pair of connecting rods 472, the second connecting ring 478 is connected to the second scraping ring 48 through a telescopic rod b479, and a rubber layer b481 is disposed on an outer ring of the second scraping ring 48.

In a further embodiment: the cam 476 that sets up is the shape that one side is high low, when gyro wheel 475 rotates on cam 476, can drive second scraping ring 48 and do the up-and-down motion at the grey body 31 inner wall of collection to this ash layer on the clearance collection grey body 31, a pair of the setting connecting rod 472 plays the supporting role to second scraping ring 48, owing to collection grey body 31 is for leaking hopper-shaped, is provided with telescopic link b479 between second scraping ring 48 and second go-between 478, in order to satisfy receiving and releasing of second scraping ring 48.

The utility model discloses a theory of operation and use flow:

the dust-containing gas is primarily filtered through the first filter screen 71 of the air inlet 7, the primarily filtered gas enters the filter chamber 11 and is filtered by the filter bag 122, dust remains on the outer surface of the filter bag 122, clean gas is discharged from the air outlet 8 of the filter chamber 11, and the discharged gas is filtered again through the second filter screen 81;

when the filter bag 122 is cleaned, the dust filtered on the outer surface of the filter bag 122 is sprayed and falls into the dust hopper 3 below, the motor 6 is started, the output shaft of the motor 6 rotates to drive the driving rod 41 to rotate, the gear b411 and the gear a441 which are arranged on the driving rod 41 are meshed and connected to drive the rotating shaft 44 to vertically rotate, as the first connecting ring 451 arranged in the first cleaning part 45 and the rotating shaft 44 are coaxially arranged, the rotating shaft 44 drives the first cleaning part 45 to rotate when rotating, the rubber layer a4521 arranged outside the first scraping ring 452 is attached to the inner side wall of the dust collecting body 31 to scrape the dust adhered to the inner wall of the dust collecting body 31, and the rubber has elasticity, so that the rubber is favorably attached to the inner wall of the dust collecting body 31, and the scraping effect of the adhered dust is improved; meanwhile, the damage of the first scraping ring 452 to the inner wall of the dust collecting body 31 is also reduced, and the arranged first cleaning part 45 can clean and scrape the agglomerated dust above the inner part of the dust collecting body 31;

the cam 476 is set to be a shape with one side higher than the other side, when the roller 475 rotates on the cam 476, the second scraping ring 48 can be driven to move up and down on the inner wall of the dust collecting body 31, so as to clean the dust layer on the dust collecting body 31, the dust on the inner wall of the dust collecting body 31 falls to the dust outlet pipe 32, the dust discharging valve 33 is opened, and the dust is discharged.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides an automatic clearance dust removal filter bag's sack formula dust collector, includes dust remover body (1), its characterized in that: a filter chamber (11) is arranged in the dust remover body (1), the filter chamber (11) is connected with a blowing dust cleaning device (2), the lower end of the filtering chamber (11) is provided with an ash bucket (3), the ash bucket (3) comprises an ash collecting body (31) and an ash discharging pipe (32) which are coaxially and fixedly connected from top to bottom, the ash collecting body (31) is conical funnel-shaped, the lower end of the ash discharging pipe (32) is provided with an ash discharging valve (33), a cleaning device (4) is arranged in the ash collecting body (31), a supporting plate (5) is welded on the outer surface of the upper end of the ash collecting body (31), the upper surface of the supporting plate (5) is fixedly provided with a motor (6) through bolts, the cleaning device (4) comprises a driving rod (41), the right end of the driving rod (41) penetrates through the ash collecting body (31), and one end of the driving rod, which penetrates through the ash collecting body, is coaxially connected with the motor (6).

2. The bag-type dust collector for automatically cleaning dust-collecting filter bags according to claim 1, wherein: be provided with filter equipment (12) in filter chamber (11), access hole (13) have been seted up to filter chamber (11) lateral wall corresponding filter equipment (12) position department, it has access door (131) to articulate through the hinge pin in access hole (13) outside, filter equipment (12) include backup pad (121) and a plurality of detachable connection in filter bag (122) of backup pad (121) lower surface, all the cover in filter bag (122) outside is equipped with bag cage (123), bag cage (123) lower extreme is a little higher than access hole (13) lower extreme, bag cage (123) detachable connection in backup pad (121).

3. The bag-type dust collector for automatically cleaning dust-collecting filter bags according to claim 2, wherein: jetting ash removal device (2) are including a pair of mounting panel (21), and are a pair of mounting panel (21) pass through bolt and filter chamber (11) lateral wall fixed connection, and are located the below of access hole (13), it is a pair of fixedly connected with gas holder (22) between mounting panel (21), gas holder (22) equidistance is provided with spray tube (23), spray tube (23) shaping in on backup pad (121), and the lower terminal surface equidistance of spray tube (23) is provided with nozzle (24).

4. The bag-type dust collector for automatically cleaning dust-collecting filter bags according to claim 1, wherein: be provided with air intake (7) on collection grey body (31), air intake (7) internalization inlays and is equipped with first filter screen (71), filter chamber (11) are kept away from one side of jetting ash removal device (2) is provided with air outlet (8), air outlet (8) internalization inlays and is equipped with second filter screen (81).

5. The bag-type dust collector for automatically cleaning dust-collecting filter bags according to claim 1, wherein: the cleaning device (4) further comprises a pair of support frames (42) and a bottom plate (46), the driving rod (41) is coaxially arranged between the pair of supporting frames (42), the lower end surfaces of the pair of supporting frames (42) are fixedly connected with a first chassis (43), a through hole (431) is formed in the middle of the first chassis (43), a rotating shaft (44) is rotatably connected to the through hole (431), the lower end of the rotating shaft (44) is rotatably connected with the bottom plate (46), the upper end of the rotating shaft (44) is fixedly sleeved with a gear a (441), the driving rod (41) is coaxially provided with a gear b (411), the gear a (441) is meshed with the gear b (411), a first cleaning part (45) is coaxially arranged on a rotating shaft (44) below the first chassis (43), and a second cleaning part (47) is coaxially arranged on the rotating shaft (44) between the first cleaning part (45) and the bottom plate (46).

6. The bag-type dust collector for automatically cleaning dust-collecting filter bags according to claim 5, wherein: the first cleaning part (45) comprises a first connecting ring (451), a first scraping ring (452) and an expansion rod a (453), and a circle of rubber layer a (4521) is arranged outside the first scraping ring (452).

7. The bag-type dust collector for automatically cleaning dust-collecting filter bags according to claim 5, wherein: the second cleaning part (47) comprises a second bottom plate (471), a pair of circular notches (4711) is formed in the second bottom plate (471), a pair of connecting rods (472) penetrate through the pair of circular notches (4711), a connecting plate (473) is connected between the bottoms of the pair of connecting rods (472), a roller (475) is vertically and rotatably connected to one side of the connecting plate (473) through a bearing (474), a cam (476) is coaxially arranged on the rotating shaft (44) above the bottom plate (46), the roller (475) is formed on the upper surface of the cam (476), the cam (476) is fixedly connected with the rotating shaft (44) through a locking bolt (477), the upper ends of the pair of connecting rods (472) are fixedly connected with a second connecting ring (478), the second connecting ring (478) is connected with a second scraping ring (48) through a telescopic rod b (479), and a ring of rubber layer b (481) is arranged on the outer ring of the second scraping ring (48).