Flue ash removal device

Abstract

The utility model belongs to the technical field of flue cleaning, and discloses a flue ash removal device. The flue ash removal device comprises a cutter head mechanism provided with a cutter head and a connecting shaft, a rotary driving mechanism provided with a rotary driving piece and a linear driving mechanism provided with a linear driving piece. Wherein the cutterhead comprises a cutterhead body and a scraper, the scraper is arranged on the cutterhead body and can abut against the inner wall of the flue, and one end of the connecting shaft is connected with the cutterhead body. The driving end of the rotary driving piece is in transmission connection with the other end of the connecting shaft. The driving end of the linear driving part is connected with the fixed end of the rotary driving part, the linear driving part can drive the rotary driving mechanism and the cutterhead mechanism to do reciprocating linear motion in the axis direction of the flue, and the rotary driving part drives the cutterhead body and the scraper to rotate with the axis of the flue as a rotating shaft through the connecting shaft. Therefore, automatic ash removal can be achieved, the ash removal effect can be improved, and the probability that the inner wall of the flue is damaged during ash removal can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of flue cleaning, in particular to a flue dust cleaning device. Background Art

[0002] An incinerator is an environmental protection equipment that burns waste gas, waste liquid, solid waste fuel, medical waste, domestic waste or animal carcasses at high temperature to reduce or shrink the amount of waste, while also utilizing part of the thermal energy of the incineration medium.

[0003] Waste gas incinerators utilize the heat generated by the combustion of auxiliary fuel to raise the temperature of combustible and harmful gases to the reaction temperature, thereby causing oxidative decomposition. When treating waste gas containing chlorine and silicon, waste gas incinerators fully burn the combustible substances in the waste gas through high-temperature incineration and thermal oxidation. High-temperature incineration produces flue gas temperatures exceeding 1100°C, and the resulting molten inorganic salts accumulate along the flue walls, quickly clogging the flue and requiring frequent cleaning.

[0004] Traditional high-temperature flue cleaning methods typically use air cannons and manual cleaning. However, air cannons are less effective for molten inorganic salts. However, cooled inorganic salts are hard and require manual cleaning. However, improper pressure control by operators can easily damage the flue lining, making manual cleaning more difficult.

[0005] Therefore, it is urgent to propose a flue dust cleaning device to solve the above problems. Utility Model Content

[0006] The purpose of the utility model is to provide a flue dust cleaning device, which can not only realize automatic dust cleaning, but also improve the dust cleaning effect and reduce the probability of damaging the inner wall of the flue during dust cleaning.

[0007] To achieve this purpose, the present invention adopts the following technical solutions:

[0008] A flue dust cleaning device, comprising:

[0009] The cutter disc mechanism includes a cutter disc and a connecting shaft. The cutter disc includes a cutter disc body and a scraper. The scraper is provided on the cutter disc body and can abut against the inner wall of the flue. One end of the connecting shaft is connected to the cutter disc body.

[0010] A rotary drive mechanism, comprising a rotary drive member, wherein a driving end of the rotary drive member is in driving connection with the other end of the connecting shaft, and the rotary drive member can drive the cutter disc to rotate about the axis of the flue through the connecting shaft;

[0011] The linear drive mechanism includes a linear drive member, the driving end of the linear drive member is connected to the fixed end of the rotary drive member, and the linear drive member is used to drive the rotary drive member and the cutter disc to move synchronously back and forth in a linear direction along the axis of the flue.

[0012] Preferably, the number of the scrapers is at least two, and the at least two scrapers are spaced apart along the circumference of the cutter disc body;

[0013] And / or, a vent hole is provided on the cutter head body;

[0014] And / or, the scraper is provided with a vent hole.

[0015] Preferably, the rotary drive mechanism also includes a transmission assembly, the transmission assembly includes a first transmission wheel and a second transmission wheel, the first transmission wheel is sleeved on the driving end of the rotary drive member, the second transmission wheel is sleeved on the connecting shaft, the first transmission wheel and the second transmission wheel are connected in transmission, and the connecting shaft is configured to be coaxial with the flue.

[0016] Preferably, the flue dust cleaning device further comprises a bracket, and the fixed end of the linear drive member is arranged on the bracket.

[0017] Preferably, the linear drive mechanism also includes a ball screw, the ball screw includes a screw and a mounting seat, the mounting seat is threadedly connected to the screw, the driving end of the linear drive member is connected to one end of the screw, and the fixed end of the rotary drive member is arranged on the mounting seat.

[0018] Preferably, the linear drive mechanism further includes a slide groove and a slide rail, the slide groove and the slide rail are slidably matched, one of the slide groove and the slide rail is arranged on the bracket, and the other is arranged on the mounting seat, and the extension direction of the slide rail is parallel to the axial direction of the screw rod.

[0019] Preferably, there are multiple slide grooves and slide rails in one-to-one correspondence.

[0020] Preferably, the linear drive mechanism further includes a first support member, which is arranged on the bracket and close to the other end of the screw rod, and the first support member is used to support the other end of the screw rod.

[0021] Preferably, the cutter disc mechanism further includes a cooling device for cooling the connecting shaft.

[0022] Preferably, the connecting shaft is provided with a cavity, an air inlet and an air outlet, the air inlet and the air outlet are both connected to the cavity, the cooling device is an air supply device, and the air outlet of the air supply device is connected to the air inlet.

[0023] Beneficial effects of the utility model:

[0024] The flue ash cleaning device of the present invention comprises a rotary drive mechanism having a rotary drive member, a linear drive mechanism having a linear drive member, and a cutter disc mechanism having a cutter disc body and a scraper. The linear drive member drives the rotary drive mechanism and the cutter disc mechanism in reciprocating linear motion, while the rotary drive member drives the cutter disc mechanism in circular rotation. The cutter disc mechanism's rotational motion allows the scraper to scrape away soot from the flue's inner wall. The cutter disc mechanism slides horizontally, pushing the scraped soot out of the flue, thereby achieving automatic flue ash cleaning. Furthermore, the scraper's direct contact with the flue's inner wall to scrape away soot improves the flue's cleaning efficiency. Furthermore, the scraper's rotational movement around the flue's axis, along with its ability to reciprocate linearly along the flue's axis along with the connecting shaft, maintains a constant contact force between the scraper and the flue's inner wall. This prevents damage to the flue's inner wall caused by improper force applied during operation, thereby increasing the flue's service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a structural diagram of the flue dust cleaning device provided by the utility model;

[0026] Figure 2 This is a structural diagram of the cutter disc mechanism provided by the utility model;

[0027] Figure 3 This is a structural diagram of the rotary drive mechanism provided by the utility model;

[0028] Figure 4 It is a structural schematic diagram of the linear drive mechanism provided by the utility model.

[0029] In the picture:

[0030] 1. Cutter disc mechanism; 11. Cutter disc; 111. Cutter disc body; 112. Scraper; 12. Connecting shaft; 13. Cooling device; 14. Rotary joint; 15. Flange plate; 2. Rotary drive mechanism; 21. Rotary drive member; 22. Transmission assembly; 221. First transmission wheel; 222. Second transmission wheel; 223. Transmission member; 3. Linear drive mechanism; 31. Linear drive member; 32. Ball screw; 321. Screw; 322. Mounting seat; 33. Slide rail; 34. First support member; 35. Second support member; 4. Bracket; 41. Fixing plate; 42. Support leg. DETAILED DESCRIPTION

[0031] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all of its components.

[0032] In the description of this utility model, unless otherwise specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0033] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0034] In the description of this embodiment, the terms "upper," "lower," "right," and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for ease of description and simplified operation. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0035] The purpose of this utility model is to provide a flue cleaning device that can automatically clean the flue, improve the cleaning effect, and reduce the chance of damage to the flue wall during cleaning. The flue cleaning device can be applied to various flues, such as incinerator flues and chemical reactor flues. The flue cleaning device provided in this embodiment is described below using the flue of an incinerator as an example.

[0036] Specifically, if Figure 1As shown, the flue dust cleaning device includes a cutter disc mechanism 1, a rotary drive mechanism 2, and a linear drive mechanism 3. The cutter disc mechanism 1 includes a cutter disc 11 and a connecting shaft 12. The cutter disc 11 includes a cutter disc body 111 and a scraper 112. The scraper 112 is provided on the cutter disc body 111 and can abut against the inner wall of the flue. One end of the connecting shaft 12 is connected to the cutter disc body 111. The rotary drive mechanism 2 includes a rotary drive member 21. The driving end of the rotary drive member 21 is transmission-connected to the other end of the connecting shaft 12. The rotary drive member 21 can drive the cutter disc 11 to rotate about the axis of the flue through the connecting shaft 12. The linear drive mechanism 3 includes a linear drive member 31. The driving end of the linear drive member 31 is connected to the fixed end of the rotary drive member 21. The linear drive member 31 is used to drive the rotary drive member 21 and the cutter disc 11 to synchronously reciprocate linearly along the axis of the flue.

[0037] The linear drive member 31 drives the rotary drive mechanism 2 and the cutter head mechanism 1 along the axial direction of the flue ( Figure 1 The rotary drive member 21 drives the cutter disc mechanism 1 to make a circular rotation motion with the axis of the flue as the rotating axis. Through the rotational motion of the cutter disc mechanism 1, the scraper 112 scrapes the soot on the inner wall of the flue. Through the horizontal sliding of the cutter disc mechanism 1, the entire cutter disc mechanism 1 pushes the soot scraped off by the scraper 112 out of the flue, thereby realizing automatic cleaning of the flue. Secondly, the scraper 112 directly contacts the inner wall of the flue to scrape off the soot, which can improve the cleaning effect of the flue cleaning device. Thirdly, the scraper 112 is rotated with the axis of the flue as the rotating axis to scrape off the soot, and the scraper 112 can move back and forth in a straight line in the X direction along the axis of the flue along with the connecting shaft 12, so that the contact force between the scraper 112 and the inner wall of the flue remains unchanged, thereby avoiding damage to the inner wall of the flue due to improper control of the force of the scraper 112 during operation, thereby increasing the service life of the flue.

[0038] In this embodiment, the rotary driving member 21 is a reduction motor. In other embodiments, the rotary driving member 21 may be a rotary cylinder or a rotary oil cylinder.

[0039] Furthermore, if Figure 2 As shown, there are at least two scrapers 112, spaced circumferentially around the cutter disc body 111. This allows smoke to pass through the gap between the two scrapers 112, allowing smoke to circulate within the flue without causing smoke blockage. This allows the ash cleaning device to clean inorganic salts from the flue wall while the incinerator is operating normally, ensuring continuous operation, improving its efficiency, and enabling online cleaning. In this embodiment, there are three scrapers 112; in other embodiments, the number of scrapers 112 may be two, four, or five.

[0040] Depending on the amount of ash generated during the combustion process, the ash cleaning device can be set to different online cleaning modes. In this embodiment, the flue ash cleaning device operates in an intermittent mode to achieve the effect of regular online cleaning. In other embodiments, the flue ash cleaning device can be set to continuous online cleaning to achieve better cleaning results.

[0041] Furthermore, due to the continuous online cleaning of the flue dust cleaning device, the cutter disc body 111 and the scraper 112 are made of high-quality alloy materials, so that the cutter disc body 111 and the scraper 112 have high temperature resistance, thereby extending the service life of the cutter disc body 111 and the scraper 112.

[0042] In other embodiments, ventilation holes are provided on the cutter disc body 111; and / or ventilation holes are provided on the scraper 112. Through the provision of the ventilation holes, smoke can circulate in the flue, thereby realizing online automatic cleaning of the cleaning device.

[0043] Furthermore, if Figure 3 As shown, the rotary drive mechanism 2 also includes a transmission assembly 22, and the connecting shaft 12 is configured to be coaxially arranged with the flue. The transmission assembly 22 includes a first transmission wheel 221, a second transmission wheel 222, and a transmission member 223. The first transmission wheel 221 is mounted on the driving end of the rotary drive member 21, and the second transmission wheel 222 is mounted on the connecting shaft 12. The first transmission wheel 221 and the second transmission wheel 222 are transmission-connected, thereby achieving a transmission connection between the rotary drive member 21 and the connecting shaft 12. The first transmission wheel 221 and the second transmission wheel 222 are transmission-connected via the transmission member 223, so that the transmission connection between the rotary drive member 21 and the connecting shaft 12 has better transmission stability. In this embodiment, the first transmission wheel 221 and the second transmission wheel 222 are both sprockets, and the transmission member 223 is a chain. Both sprockets are engaged with the chain, thereby achieving a transmission connection between the two sprockets.

[0044] In another embodiment, the first transmission wheel 221 and the second transmission wheel 222 are both pulleys, and the transmission member 223 is a belt, which is respectively embedded in the belt grooves of the two pulleys, and the two pulleys are connected by a belt transmission. In still another embodiment, the transmission assembly 22 includes a first transmission wheel 221 and a second transmission wheel 222, the first transmission wheel 221 is mounted on the driving end of the rotating drive member 21, and the second transmission wheel 222 is mounted on the connecting shaft 12, and the first transmission wheel 221 and the second transmission wheel 222 are both gears, and the two gears are meshed and connected.

[0045] Alternatively, as Figure 1 As shown, the flue dust cleaning device further includes a bracket 4 , and the fixed end of the linear drive member 31 is arranged on the bracket 4 to achieve fixation of the linear drive member 31 .

[0046] Furthermore, if Figure 1 As shown, the bracket 4 includes a fixed plate 41 and support legs 42. The fixed plate 41 is connected to the support legs 42. The support legs 42 are telescopic legs, so that the height of the support legs 42 can be adjusted to accommodate flues of different heights. In this embodiment, the number of support legs 42 is four, two support legs 42 are provided along the width direction of the fixed plate 41, and two support legs 42 are provided parallel to the length direction of the fixed plate 41. The four support legs 42 are all supported on a horizontal plane. The two support legs 42 provided along the width direction of the fixed plate 41 are combined into a support leg group. The support leg group is in a herringbone shape. The top of the herringbone support leg group is fixedly connected to the fixed plate 41, and the two fork legs of the herringbone support leg group (i.e., the bottoms of the two support legs 42) are both supported on a horizontal plane. In other embodiments, the support legs 42 can also be of other numbers and shapes, for example, two or three gate-shaped support legs 42, or two inverted figure-eight support legs 42, etc., which are not listed here one by one.

[0047] Alternatively, as Figure 4 As shown, the linear drive mechanism 3 also includes a ball screw 32, the ball screw 32 includes a screw 321 and a mounting seat 322, the mounting seat 322 is threadedly connected to the screw 321, the driving end of the linear drive member 31 is connected to one end of the screw 321, and the fixed end of the rotary drive member 21 is set on the mounting seat 322, thereby realizing the connection between the linear drive mechanism 3 and the rotary drive mechanism 2.

[0048] It should be pointed out that the ball screw 32 is a conventional component in this field, and its specific structure and working principle are not described here in detail.

[0049] Furthermore, the linear drive mechanism 3 further includes a slide groove (not shown) and a slide rail 33, the slide groove and the slide rail 33 being in sliding engagement, one of the slide groove and the slide rail 33 being provided on the bracket 4, and the other being provided on the mounting seat 322, the extension direction of the slide rail 33 being parallel to the axial direction of the screw rod 321, thereby achieving a linear guide effect for the linear drive mechanism 3. In this embodiment, the slide rail 33 is provided on the bracket 4, the length of the slide rail 33 is equal to the length of the screw rod 321, the slide groove is provided on the mounting plate, and the slide groove and the slide rail 33 are in sliding engagement. In other embodiments, the slide rail 33 is provided on the mounting plate, the slide groove is provided on the bracket 4, the length of the slide groove is equal to the length of the screw rod 321, and the slide groove and the slide rail 33 are in sliding engagement.

[0050] Furthermore, the number of chutes and slide rails 33 is multiple and corresponds one to one, which improves the linear guidance effect of the linear drive mechanism 3 and makes the linear motion smoother. In this embodiment, the number of chutes and slide rails 33 is two, and the two slide rails 33 are respectively located on both sides of the screw rod 321, so that the sliding of the mounting seat 322 is smoother. In other embodiments, the number of chutes and slide rails 33 is three, four, or five, etc., and the multiple slide rails 33 are respectively arranged on both sides of the screw rod 321, or the multiple slide rails 33 are all arranged on the same side of the screw rod 321.

[0051] Optionally, the linear drive mechanism 3 further includes a first support member 34, which is disposed on the bracket 4 and is disposed near the end of the screw rod 321 away from the linear drive member 31. The first support member 34 is used to support the end of the screw rod 321 away from the linear drive member 31, thereby providing support for the screw rod 321. In this embodiment, the number of the first support member 34 is one. In other embodiments, the number of the first support members 34 is two, three, or four, and the plurality of first support members 34 are all disposed at the end of the screw rod 321 away from the linear drive member 31.

[0052] In this embodiment, the first support member 34 is designed as a rolling bearing, the outer ring of which is mounted on the bracket 4, and the inner ring of which is mounted on the end of the screw rod 321 away from the linear drive member 31. This not only supports the screw rod 321 but also reduces friction between the screw rod 321 and the first support member 34 during rotation. In other embodiments, the first support member 34 includes a first support rod and a second support rod, which are cross-connected, and the screw rod 321 is placed at the cross-connection between the first and second support rods.

[0053] Optionally, the linear drive mechanism 3 further includes a second support member 35, which is disposed on the bracket 4 and is proximate to the end of the screw rod 321 proximate to the linear drive member 31. The second support member 35 is used to support the end of the screw rod 321 proximate to the linear drive member 31, thereby improving the support effect on the screw rod 321. In this embodiment, the number of the second support member 35 is one. In other embodiments, the number of the second support members 35 is two, three, or four, etc., and the plurality of second support members 35 are all disposed on the end of the screw rod 321 proximate to the linear drive member 31.

[0054] In this embodiment, the second support member 35 is designed as a rolling bearing. The outer ring of the rolling bearing is mounted on the bracket 4, and the inner ring is mounted on the end of the screw rod 321 near the linear drive member 31. This not only supports the screw rod 321 but also reduces friction between the screw rod 321 and the second support member 35 during rotation. In other embodiments, the second support member 35 includes a third support rod and a fourth support rod, which are cross-connected, and the screw rod 321 is placed at the cross-connection between the third and fourth support rods.

[0055] In this embodiment, the linear drive member 31 is a motor that cooperates with the ball screw 32 to drive the rotary drive mechanism 2 and the cutter head mechanism 1 to perform reciprocating linear motion. In other embodiments, the linear drive member 31 can also be a linear cylinder or a hydraulic cylinder to directly drive the rotary drive mechanism 2 and the cutter head mechanism 1 to perform reciprocating linear motion.

[0056] Alternatively, as Figure 2 As shown, the cutter disc mechanism 1 also includes a cooling device 13, which is used to cool the connecting shaft 12 so that the connecting shaft 12 can maintain a relatively stable temperature during the operation of the cleaning device, thereby avoiding the cleaning device from stopping due to excessive temperature. The setting of the cooling device 13 improves the working efficiency of the cleaning device.

[0057] Furthermore, the connecting shaft 12 is provided with a cavity, an air inlet and an air outlet, and the air inlet and the air outlet are both connected to the cavity. The cooling device 13 is an air supply device, and the air outlet of the air supply device is connected to the air inlet. The air supply device can be a blower or a fan, etc. The air supply device blows low-temperature gas to the cavity of the connecting shaft 12 through the air inlet to achieve cooling of the connecting shaft 12, improve the rigidity of the connecting shaft 12, and thus improve the service life of the cleaning device.

[0058] Furthermore, the air outlet is connected to the flue, that is, the low-temperature gas in the cavity absorbs the heat of the connecting shaft 12 and enters the flue through the air outlet. To improve the cooling effect on the connecting shaft 12, the air inlet and the air outlet are respectively located at both ends of the connecting shaft 12.

[0059] In other embodiments, the gas outlet may also be connected to the external environment, that is, after the low-temperature gas in the cavity absorbs the heat of the connecting shaft 12, it is discharged into the external environment through the gas outlet.

[0060] In other embodiments, the connecting shaft 12 is provided with a cavity, a coolant inlet, and a coolant outlet, the coolant inlet and the coolant outlet are both connected to the cavity, the cooling device 13 is a liquid cooling device, the output end of the liquid cooling device is connected to the coolant inlet, and the return end of the liquid cooling device is connected to the coolant outlet. The liquid cooling device delivers low-temperature coolant to the cavity through the coolant inlet, and the low-temperature coolant cools the connecting shaft 12, and then flows back into the liquid cooling device through the coolant outlet. In other embodiments, the connecting shaft 12 is a solid shaft and is made of a heat-conducting material. A cooling jacket is provided on the outer wall of the connecting shaft 12, and a circulation cavity is provided in the cooling jacket. The circulation cavity is connected to the output end and the return end of the liquid cooling device. A low-temperature coolant circulates between the liquid cooling device and the circulation cavity, and the low-temperature coolant absorbs heat from the connecting shaft 12 to cool the connecting shaft 12.

[0061] Furthermore, the cutterhead mechanism 1 includes a swivel joint 14. A flange is welded to the end of the connecting shaft 12 facing away from the cutterhead body 111. One end of the swivel joint 14 is connected to the connecting shaft 12 via the flange, and the other end of the swivel joint 14 is connected to the air outlet of the air supply device. Because the swivel joint 14 has the characteristics of smooth and long-lasting operation, strong and flexible, and low friction coefficient, the design of connecting the connecting shaft 12 and the air outlet of the air supply device via the swivel joint 14 can improve the stability of the connection between the connecting shaft 12 and the air outlet of the air supply device, while also improving the rotational stability of the connecting shaft 12.

[0062] Furthermore, the cutterhead mechanism 1 includes a flange plate 15, which is sleeved around the connecting shaft 12 and embedded in the sidewall of the flue. The flange plate 15 supports the connecting shaft 12, thereby improving the overall stability of the cutterhead mechanism 1. Furthermore, the flange plate 15 enhances the sealing performance of the connection between the connecting shaft 12 and the flue. In other embodiments, the flange plate 15 is installed on the outer wall of the flue, or on the inner wall of the flue.

[0063] Obviously, the above-described embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the manner in which the present invention is to be implemented. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A flue dust cleaning device, characterized in that: include: A cutter disc mechanism (1), the cutter disc mechanism (1) comprising a cutter disc (11) and a connecting shaft (12), the cutter disc (11) comprising a cutter disc body (111) and a scraper (112), the scraper (112) being arranged on the cutter disc body (111), the scraper (112) being capable of abutting against an inner wall of a flue, and one end of the connecting shaft (12) being connected to the cutter disc body (111); A rotary drive mechanism (2), the rotary drive mechanism (2) comprising a rotary drive member (21), a driving end of the rotary drive member (21) being in transmission connection with the other end of the connecting shaft (12), and the rotary drive member (21) being capable of driving the cutter head (11) to rotate about the axis of the flue through the connecting shaft (12); A linear drive mechanism (3), the linear drive mechanism (3) comprising a linear drive member (31), a driving end of the linear drive member (31) being connected to a fixed end of the rotary drive member (21), the linear drive member (31) being used to drive the rotary drive member (21) and the cutter disc (11) to synchronously reciprocate linearly along the axial direction of the flue.

2. The flue dust cleaning device according to claim 1, characterized in that: The number of the scrapers (112) is at least two, and the at least two scrapers (112) are arranged at intervals along the circumference of the cutter disc body (111); And / or, a vent hole is provided on the cutter head body (111); And / or, the scraper (112) is provided with a vent hole.

3. The flue dust cleaning device according to claim 1, characterized in that: The rotary drive mechanism (2) further comprises a transmission assembly (22), the transmission assembly (22) comprising a first transmission wheel (221) and a second transmission wheel (222), the first transmission wheel (221) being sleeved on the driving end of the rotary drive member (21), the second transmission wheel (222) being sleeved on the connecting shaft (12), the first transmission wheel (221) and the second transmission wheel (222) being transmission-connected, and the connecting shaft (12) being configured to be coaxially arranged with the flue.

4. The flue dust cleaning device according to any one of claims 1 to 3, characterized in that: The flue dust cleaning device further comprises a bracket (4), and the fixed end of the linear drive member (31) is arranged on the bracket (4).

5. The flue dust cleaning device according to claim 4, characterized in that: The linear drive mechanism (3) further comprises a ball screw (32), the ball screw (32) comprising a screw rod (321) and a mounting seat (322), the mounting seat (322) being threadedly connected to the screw rod (321), the driving end of the linear drive member (31) being connected to one end of the screw rod (321), and the fixed end of the rotary drive member (21) being arranged on the mounting seat (322).

6. The flue dust cleaning device according to claim 5, characterized in that: The linear drive mechanism (3) further comprises a slide groove and a slide rail (33), wherein the slide groove and the slide rail (33) are slidably matched, one of the slide groove and the slide rail (33) is arranged on the bracket (4), and the other is arranged on the mounting seat (322), and the extension direction of the slide rail (33) is parallel to the axial direction of the screw rod (321).

7. The flue dust cleaning device according to claim 6, characterized in that: The number of the sliding grooves and the sliding rails (33) are both multiple and one-to-one corresponding.

8. The flue dust cleaning device according to claim 5, characterized in that: The linear drive mechanism (3) further comprises a first support member (34), the first support member (34) being arranged on the bracket (4) and close to the other end of the screw rod (321), the first support member (34) being used to support the other end of the screw rod (321).

9. The flue dust cleaning device according to any one of claims 1 to 3, characterized in that: The cutter disc mechanism (1) further comprises a cooling device (13), and the cooling device (13) is used for cooling the connecting shaft (12).

10. The flue dust cleaning device according to claim 9, characterized in that: The connecting shaft (12) is provided with a cavity, an air inlet and an air outlet, the air inlet and the air outlet are both connected to the cavity, and the cooling device (13) is an air supply device, the air outlet of the air supply device is connected to the air inlet.

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