A belt-driven trolley with a flue gas sealing structure and its usage method

Abstract

This invention discloses a belt trolley with a flue gas sealing structure and its usage method, including a dust collection main pipe, a traveling frame beam, and a sealing belt. Support rails are fixedly installed on both sides of the top of the dust collection main pipe. Four track wheels are rolled on the bottom of the traveling frame beam. A positioning frame is fixedly installed at the bottom of the middle part of the traveling frame beam. A rigid cylinder is movably sleeved on the inner side of the positioning frame, and a fixed cylinder is connected to the top of the rigid cylinder. This design does not affect movement or prevent damage during operation. The flexible fabric mechanism and the sealing surface of the support rails are made of flexible fabric, which can overcome the damage to the equipment caused by the rigid structure and make the seal more reliable. Especially during operation, the negative pressure of the system ensures good sealing. This device achieves reliable sealing in the working state and also allows for separation when the belt trolley is moving without damaging the sealing structure, while also making the belt trolley move flexibly.

Description

Technical Field

[0001] This invention relates to the field of coking environmental protection technology, specifically to a belt trolley with a flue gas sealing structure and its usage method. Background Technology

[0002] During the coke oven production process, the pushing of coke and the charging of coal generate a large amount of toxic and dust-laden waste gas. This gas contains suspended solids, benzene-soluble substances, benzo[a]pyrene, hydrogen sulfide, ammonia, and other harmful substances, which are extremely harmful to human health if exposed for a long time. The flue gas emitted from the coke oven's machine-side furnace head is collected and treated at a ground station. Machine-side furnace head flue gas mainly refers to the flue gas emitted from the machine-side furnace head during the entire process of opening the furnace door, pushing coke, charging coal, and closing the furnace door—that is, the entire process of coke discharge and coal charging in a single furnace. The characteristics of machine-side furnace head flue gas are intermittent emissions, high humidity, high temperature, and the presence of combustible gases and tar-like substances, making it difficult to treat. Furthermore, due to the structural characteristics of coke ovens, a typical set of two coke ovens consists of a design with 100 to 140 holes. During the individual coal charging and coke discharging mechanical operations, each hole needs to collect dust and send it through a flue gas conversion device into a dust removal trunk line, and then into a ground dust removal station for purification treatment to meet emission standards. The solution mainly involves the field of coking environmental protection technology, especially the conveying of flue gas using a belt-sealed structure in the dust removal system during the coal charging and coke discharging process of coke ovens.

[0003] Currently, commonly used flue gas conversion devices include belt-sealed trolleys, water-sealed elephant trunk bends, and hydraulic push-cover flue gas conversion valves. When using belt-sealed trolleys, the seal between the trolley and the main belt pipe becomes the main factor affecting performance. A simple, reliable sealing device needs to be designed that does not hinder or damage the trolley's movement when it is not in operation. Furthermore, long-term negative pressure dust collection in the dust collection main pipe leads to the accumulation of dust, requiring cleaning, which is quite difficult. Therefore, this paper proposes a belt-sealed trolley with a flue gas sealing structure and its usage method. Summary of the Invention

[0004] The purpose of this invention is to provide a belt trolley with a flue gas sealing structure to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a belt trolley with a flue gas sealing structure, comprising a dust collection main pipe, a traveling frame beam, and a sealing belt. Support rails are fixedly installed on both sides of the top of the dust collection main pipe. Four track wheels are rotatably installed on the bottom of the traveling frame beam. A positioning frame is fixedly installed at the bottom of the middle section of the traveling frame beam. A rigid cylinder is movably sleeved inside the positioning frame. A fixed cylinder is connected to the top of the rigid cylinder. A flexible telescopic cylinder is connected to the top of the fixed cylinder. A flue gas conversion bend is connected to the top of the flexible telescopic cylinder. A flexible fabric mechanism is fixedly installed at the bottom of the rigid cylinder. Side supports are fixedly installed on the outer sides of both ends of the flexible fabric mechanism. Flexible rubber plates are fixedly installed on the outer sides of the side supports by bolts. Several mounting seats are fixedly installed on the front and back of the fixed cylinder. Several spring return mechanisms are installed on the outer side of the fixed cylinder. Several electromagnets are installed on the outer side of the fixed cylinder. Several support wheels are rolled on the inner side of the rigid cylinder by a bracket. Two sets of cleaning mechanisms are fixedly installed on the outer side of the top of the traveling frame beam and on the inner side of the flue gas conversion bend. Two top positioning rollers are rolled on the inner side of the top of the traveling frame beam, and two bottom positioning rollers are rolled on the inner side of the bottom of the traveling frame beam.

[0006] The sealing belt has magnetic edging on both sides, and reinforcing ribs are fixedly installed inside the sealing belt. The sealing belt is laid on top of the support track.

[0007] Preferably, the dimensions of the four track wheels are adapted to the dimensions of the support track, and the four track wheels are located on the outer edge of the support track. The dust collection dry pipe is a gas guide pipe of the negative pressure dust removal system.

[0008] Preferably, the flue gas conversion bend is fixedly installed on the inner side of the traveling frame beam, and the flue gas conversion bend extends to the outer side of the traveling frame beam in a bend shape, and the specifications and dimensions of the fixed cylinder are adapted to the specifications and dimensions of the positioning frame.

[0009] Preferably, the dimensions of the flexible fabric mechanism are adapted to the dimensions of the dust collection dry pipe, the outer side of the flexible fabric mechanism is located at the top of the support rail, the dimensions of the side bracket and the flexible rubber plate are adapted to the dimensions of the support rail, the position of the support wheel corresponds to the top position of the support rail, and the support wheel is linearly and evenly distributed on the inner side of the rigid cylinder.

[0010] Preferably, the mounting bases are linearly and evenly distributed on the outer side of the fixed cylinder. The spring reset mechanism includes a mounting plate, a positioning slide pin is movably sleeved on the inner side of the mounting plate, and a reset spring is sleeved on the outer side of the positioning slide pin. The top ends of the positioning slide pin and the reset spring are fixedly installed on the bottom of the mounting base, and the bottom of the reset spring is fixedly installed on the top of the mounting plate. The mounting plate is fixedly installed on the top of the positioning frame. The positioning slide pin movably passes through the mounting plate and extends into the interior of the positioning frame. The position of the electromagnet corresponds to the position of the mounting base. The mounting base is made of ferromagnetic material. The electromagnet is fixedly installed on the top of the positioning frame. The spring reset mechanism and the electromagnet are linearly and evenly distributed on the outer side of the fixed cylinder.

[0011] Preferably, the magnetic suction edge is made of a mixture of magnetic suction powder and belt base material. The magnetic suction powder is either ferrite magnetic powder or neodymium iron boron magnetic powder. The reinforcing ribs are linearly and evenly distributed inside the sealing belt. The size of the sealing belt is adapted to the size of the support track. The sealing belt is movably wrapped around the top of the top positioning roller and the bottom of the bottom positioning roller. The bottom positioning roller rolls the sealing belt to fit against the top of the support track. The size of the sealing belt is adapted to the size of the traveling frame beam.

[0012] Preferably, the cleaning mechanism includes a first side mounting frame and a second side mounting frame. A bearing seat is fixedly mounted on the bottom of the second side mounting frame. A rotating rubber wheel is movably sleeved on the inner side of the bottom end of the first bearing seat. A gearbox is drivenly connected to the bottom end of the rotating rubber wheel. A fixing rod is fixedly mounted on the outer shell of the gearbox. The fixing rod is U-shaped, and the end of the fixing rod away from the gearbox is fixedly mounted on the outer side of the second side mounting frame. A flexible connecting shaft is drivenly connected to the output end of the gearbox. Several bristles are fixedly mounted on the outer side of the flexible connecting shaft. Three limiting bearings are movably sleeved on the outer side of the flexible connecting shaft. A cross bracket is fixedly mounted on the outer wall of the three limiting bearings on opposite sides. A cross bracket is fixedly mounted on the top of the cross bracket. A bearing seat is fixedly mounted on the end of the flexible connecting shaft away from the gearbox. The inner side of the top end of the second bearing seat is movably sleeved on the outer side of the bottom end of the first side mounting frame. Both the first and second side mounting frames are fixedly mounted on the inner wall of the flue gas conversion bend.

[0013] Preferably, the outer side of the rotating rubber wheel is in rolling contact with the inner side of the supporting track, the bottom end of the rotating rubber wheel is connected to the input end of the gearbox, the bristles are evenly distributed in a circular linear pattern on the outer side of the flexible connecting shaft, the outer side of the bristles is in contact with the inner wall of the dust collection dry pipe, the horizontal bracket is fixedly installed on the opposite side of the second side mounting bracket and the first side mounting bracket, the flexible connecting shaft is annular, and the specifications and dimensions of the flexible connecting shaft are adapted to the specifications and dimensions of the dust collection dry pipe.

[0014] In the above-mentioned method of using a belt trolley with a flue gas sealing structure, the belt trolley with a flue gas sealing structure described above is applied, including the following steps:

[0015] S1. In use, the flue gas conversion bend is connected to the dust collection guide pipe of the mechanical vehicle (coal charging car, coke pushing car or coke quenching car), and the dust collection main pipe is connected to the negative pressure dust removal system. The sealing belt is laid on the outside of the support rail, and then the traveling frame beam and track wheel are placed on the top of the dust collection main pipe and the support rail. The track wheel is rolled on the outside of the dust collection main pipe, and the sealing belt is passed through the bottom of the bottom positioning roller and the top of the top positioning roller to support the sealing belt. After installation, the mechanical vehicle travels along the length of the furnace, that is, along the top of the support rail.

[0016] S2. During operation, coal charging cars, coke pushing cars, or coke quenching cars generate some smoke and dust. At this time, the dust collection main pipe has a negative pressure suction airflow. When the electromagnet is energized, it generates suction force, causing the mounting base and fixed cylinder to move down and stretching the flexible connecting telescopic cylinder. At this time, the fixed cylinder and rigid cylinder move down under the sliding limit of the positioning frame, so that the flexible fabric mechanism contacts the top of the support rail. The flexible rubber plate extends between the bottom positioning roller and the flexible fabric mechanism, reducing the airflow gap. At this time, the airflow is connected through the flue gas conversion bend, causing the dust collection part of the mechanical vehicle to be guided out of the smoke and dust by the airflow. It is connected to the inside of the fixed cylinder and rigid cylinder through the flue gas conversion bend and the flexible connecting telescopic cylinder. Finally, the flexible fabric mechanism connects to the support rail, allowing the airflow and smoke and dust to enter the inside of the dust collection main pipe, and then be guided to the smoke and dust treatment system for treatment.

[0017] S3. After the operation is completed, the electromagnet is de-energized and demagnetized. At this time, the mounting base and the fixed cylinder are reset under the elastic force of the return spring, causing the rigid cylinder and the flexible fabric mechanism to move upward. This allows the flexible fabric mechanism to separate from the support rail and the dust collection pipe. It can also automatically separate during the trolley's movement, thus not affecting the movement or damaging the sealing device. When working, the electromagnet's attraction tightly binds the lower flexible fabric mechanism to the dust collection pipe and the top of the support rail, achieving a sealing effect. When not working, the electromagnet is de-energized, and the flexible fabric mechanism automatically separates from the dust collection pipe and the support rail, thus not affecting the movement or preventing damage. The flexible fabric mechanism and the sealing surface of the support rail are made of flexible fabric, which can overcome the damage to the equipment caused by the rigid structure and make the seal more reliable. Especially during operation, the negative pressure of the system makes the sealing performance good. Through the design of the electromagnet and the lifting structure, on the one hand, the sealing structure can be more tightly bound during operation, and on the other hand, it can be separated when the trolley is moving, thus not affecting the movement or preventing damage.

[0018] S4. During operation, the belt trolley connects to the coal charging car, coke pushing car, or coke quenching car via the flue gas conversion bend and moves synchronously along the furnace length. When it reaches the working position, it performs coke discharge and coal charging operations. At this time, the dust removal system is activated. The flexible fabric mechanism seals the space between itself and the support rail, and the sealing belt seals the opening of the support rail. This allows the dust collected through the flue gas conversion bend to enter the dust collection main pipe via the belt trolley and finally enter the ground dust removal station for treatment. When the operation ends, the dust removal system stops working, the belt trolley sealing structure separates, and the mechanical vehicle continues to move for the next furnace operation.

[0019] S5. During operation, dust will adhere to and accumulate inside the dust collection duct. The traveling frame beam moves along with the mechanical vehicle at the top of the dust collection duct. The rotating rubber wheel contacts the inner side of the support rail, causing it to rotate and transmitting the rotational force to the gearbox. The gearbox's output shaft then drives the flexible connecting shaft to rotate. The flexible connecting shaft maintains its relative position under the movable sleeve of the limit bearing. The rotation of the flexible connecting shaft causes the brush bristles to rotate relative to the inner wall of the dust collection duct. The gearbox causes the brush bristles to rotate at a different speed than the dust collection duct, thus cleaning the inner wall of the dust collection duct. Dust is then drawn out by the negative pressure airflow, reducing dust accumulation and indirectly reducing the cleaning cycle and frequency of the dust collection duct.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. During the operation of the equipment, the belt trolley is connected to the coal charging car, coke pushing car or coke quenching car through the flue gas conversion bend and moves synchronously along the furnace length. When it reaches the working position, it performs coke discharge and coal charging operations. At this time, the dust removal system is working. The flexible fabric mechanism will seal between itself and the support rail, and the opening position of the support rail will be sealed by the sealing belt. This will cause the dust collected through the flue gas conversion bend to enter the dust collection main pipe through the belt trolley and finally enter the ground dust removal station for treatment. When the work is finished, the dust removal system stops working, the sealing structure of the belt trolley is sealed and separated, and the mechanical vehicle continues to move to carry out the next furnace operation.

[0021] 2. During operation, this solution uses the attraction of an electromagnet to tightly connect the lower flexible fabric mechanism with the dust collection pipe and the top of the support track, thus achieving a sealing effect. When not in operation, the electromagnet is de-energized, and the flexible fabric mechanism automatically separates from the dust collection pipe and the support track, thereby not affecting movement and avoiding damage. The flexible fabric mechanism and the sealing surface of the support track are made of flexible fabric, which can overcome the damage to the equipment caused by rigid structures and make the seal more reliable. Especially during operation, the negative pressure of the system makes the sealing performance good. This device not only achieves reliable sealing in the working state, but also meets the requirements of separation when the belt trolley is moving in the non-working state, without damaging the sealing structure, and making the belt trolley move flexibly.

[0022] 3. During operation, dust will adhere to and accumulate inside the dust collection duct. The traveling frame beam moves along with the mechanical vehicle at the top of the dust collection duct. The rotating rubber wheel contacts the inner side of the support rail, causing it to rotate and transmitting the rotational force to the gearbox. The gearbox's output shaft then drives the flexible connecting shaft to rotate. The flexible connecting shaft maintains its relative position under the movable sleeve of the limit bearing. The rotation of the flexible connecting shaft causes the brush bristles to rotate relative to the inner wall of the dust collection duct. The gearbox causes the brush bristles to rotate at a different speed than the dust collection duct, thus cleaning the inner wall of the duct. Dust is then drawn out by the negative pressure airflow, reducing dust accumulation and indirectly reducing the cleaning and maintenance cycle of the dust collection duct, thus lowering the cleaning frequency. Attached Figure Description

[0023] Figure 1 This is a front-view stereoscopic structural diagram of the present invention.

[0024] Figure 2 This is a schematic diagram of the three-dimensional appearance structure of the present invention from a rear-view or upward-view perspective.

[0025] Figure 3 This is a schematic diagram of the front structure of the present invention.

[0026] Figure 4 This is a schematic diagram of the front cross-sectional structure of the present invention.

[0027] Figure 5 This is a schematic diagram of the right-side cross-sectional structure of the present invention.

[0028] Figure 6 This is a top view of a partial cross-section of the sealing belt of the present invention.

[0029] Figure 7 For the present invention Figure 2 Enlarged structural diagram at point A in the middle.

[0030] Figure 8 For the present invention Figure 3 Enlarged structural diagram at point B.

[0031] Figure 9 For the present invention Figure 4 Enlarged structural diagram at point C.

[0032] Figure 10 For the present invention Figure 5 Enlarged structural diagram at point D.

[0033] Figure 11 For the present invention Figure 5 Enlarged structural diagram at point E in the middle.

[0034] In the diagram: 1. Dust collection main pipe; 101. Support rail; 2. Traveling frame beam; 201. Track wheel; 202. Positioning frame; 3. Spring return mechanism; 301. Mounting plate; 302. Positioning slide column; 303. Return spring; 4. Flexible connection telescopic cylinder; 5. Fixed cylinder; 501. Mounting base; 6. Electromagnet; 7. Flexible fabric mechanism; 701. Side bracket; 702. Flexible rubber plate; 703. Rigid cylinder; 8. Flue gas conversion bend; 9. Sealing belt; 901. Magnet 902. Edge suction; 10. Reinforcing ribs; 11. Top positioning roller; 12. Cleaning mechanism; 1101. Side mounting bracket one; 1102. Cross bracket; 1103. Flexible connecting shaft; 1104. Limit bearing; 1105. Brush bristles; 1106. Horizontal bracket; 1107. Gearbox; 1108. Rotating rubber wheel; 1109. Bearing seat one; 1110. Fixing rod; 1111. Side mounting bracket two; 1112. Bearing seat two; 12. Bottom positioning roller; 13. Support wheel. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] Please see Figures 1-11This invention provides a technical solution: a belt trolley with a flue gas sealing structure, comprising a dust collection main pipe 1, a traveling frame beam 2, and a sealing belt 9. Support rails 101 are fixedly installed on both sides of the top of the dust collection main pipe 1. Four track wheels 201 are rotatably installed on the bottom of the traveling frame beam 2. A positioning frame 202 is fixedly installed at the bottom of the middle part of the traveling frame beam 2. A rigid cylinder 703 is movably sleeved inside the positioning frame 202. A fixed cylinder 5 is connected to the top of the rigid cylinder 703. A flexible telescopic cylinder 4 is connected to the top of the fixed cylinder 5. A flue gas conversion bend 8 is connected to the top of the flexible telescopic cylinder 4. A flexible fabric mechanism 7 is fixedly installed at the bottom of the rigid cylinder 703. Side brackets 701 are fixedly installed on the outer sides of both ends of the fabric mechanism 7. Flexible rubber plates 702 are fixedly installed on the outer sides of the side brackets 701 by bolts. Several mounting seats 501 are fixedly installed on the front and back of the fixed cylinder 5. Several spring reset mechanisms 3 are installed on the outer side of the fixed cylinder 5. Several electromagnets 6 are installed on the outer side of the fixed cylinder 5. Several support wheels 13 are rolled on the inner side of the rigid cylinder 703 by brackets. Two sets of cleaning mechanisms 11 are fixedly installed on the outer side of the top of the traveling frame beam 2 and the inner side of the flue gas conversion bend 8. Two top positioning rollers 10 are rolled on the inner side of the top of the traveling frame beam 2, and two bottom positioning rollers 12 are rolled on the inner side of the bottom of the traveling frame beam 2.

[0037] The sealing belt 9 has magnetic edges 901 on both sides, and reinforcing ribs 902 are fixedly installed inside the sealing belt 9. The sealing belt 9 is laid on top of the support rail 101.

[0038] The working principle of the above technical solution is as follows: During operation, the coal charging car, coke pushing car, or coke quenching car generates some dust due to the operation. At this time, the dust collection main pipe 1 has a negative pressure dust suction airflow inside. When the electromagnet 6 is energized, it generates a suction force, causing the mounting base 501 and the fixed cylinder 5 to move down and stretch the flexible connecting telescopic cylinder 4. At this time, the fixed cylinder 5 and the rigid cylinder 703 move down under the sliding limit of the positioning frame 202, so that the flexible fabric mechanism 7 contacts the top of the support rail 101. The flexible rubber plate 702 extends between the bottom positioning roller 12 and the flexible fabric mechanism 7, reducing the airflow gap. At this time, the airflow is connected through the flue gas conversion bend 8, which causes the dust collection part of the mechanical vehicle to be guided out of the dust by the airflow. It is connected to the interior of the fixed cylinder 5 and the rigid cylinder 703 through the flue gas conversion bend 8 and the flexible connecting telescopic cylinder 4. Finally, the flexible fabric mechanism 7 connects to the support rail 101, so that the airflow and dust enter the interior of the dust collection main pipe 1, and are then guided to the dust treatment system for treatment through the dust collection main pipe 1.

[0039] In another implementation scheme, such as Figures 1-10As shown, the dimensions of the four track wheels 201 are compatible with the dimensions of the support track 101, and the four track wheels 201 are located on the outer edge of the support track 101. The dust collection dry pipe 1 is the gas guide pipe of the negative pressure dust removal system.

[0040] The outer side of the track wheel 201 is tapered and fits against the outer side of the support track 101, thereby limiting the rolling of the track wheel 201 and the movement of the walking frame beam 2, reducing misalignment, and traveling on the top of the dust collection dry pipe 1. In conjunction with the negative pressure of the dust collection dry pipe 1, the structure's usability is enhanced. The support track 101 and the dust collection dry pipe 1 are further reinforced by reinforcing ribs.

[0041] In another implementation scheme, such as Figures 1-10 As shown, the flue gas conversion bend 8 is fixedly installed on the inner side of the traveling frame beam 2, and the flue gas conversion bend 8 extends to the outer side of the traveling frame beam 2 in a bent shape. The specifications and dimensions of the fixing cylinder 5 are compatible with the specifications and dimensions of the positioning frame 202.

[0042] After the flue gas conversion bend 8 is fixed, it is easy to connect with the coal charging car, coke pushing car or coke quenching car, and provides a fixed position for the internal cleaning mechanism 11. The fixed cylinder 5 and the rigid cylinder 703 can slide inside the positioning frame 202, which is convenient for adjusting the height and limit. The position is controlled by the start and stop of the electromagnet 6, which increases the overall convenience.

[0043] In another implementation scheme, such as Figures 1-10 As shown, the dimensions of the flexible fabric mechanism 7 are adapted to the dimensions of the dust collection dry pipe 1. The outer side of the flexible fabric mechanism 7 is located on the top of the support rail 101. The dimensions of the side bracket 701 and the flexible rubber plate 702 are adapted to the dimensions of the support rail 101. The position of the support wheel 13 corresponds to the top position of the support rail 101. The support wheel 13 is linearly and evenly distributed on the inner side of the rigid cylinder 703.

[0044] The flexible fabric mechanism 7 uses flexible fabric, which can overcome the damage to the equipment caused by rigid structures and make the sealing more reliable. It has a simple structure, and the negative pressure of the auxiliary system ensures good sealing. The side bracket 701 provides an installation position for the flexible rubber plate 702 and limits its movement. The side bracket 701 is a supporting plastic material that provides support for the outer side of the flexible fabric mechanism 7. When the flexible fabric mechanism 7 is lowered, the side bracket 701 provides support for its outer side. The bottom of the flexible fabric mechanism 7 is fixed to the rigid cylinder 703. At this time, the connection point of the flexible fabric mechanism 7 deforms, and the rigid cylinder 703 lies flat on top of the support rail 101, spanning the support. The flexible fabric mechanism 7 is supported on the outside of the support rail 101, thus providing a lateral support force, reducing the sag of the flexible fabric mechanism 7, ensuring the stability of the structure, and ensuring the structural position of the flexible rubber plate 702. Under the lateral support of the side bracket 701, the flexible rubber plate 702 slides to the inside of the sealing belt 9 and the bottom positioning roller 12, providing a certain contact seal at this point and reducing gaps. This, combined with the negative pressure inside the dust collection dry pipe 1, causes the suction force to be limited to the dust collection point of the connecting vehicle after passing through the flexible fabric mechanism 7, the fixed cylinder 5, the flexible connection telescopic cylinder 4, and the flue gas conversion bend 8. This facilitates the connection, increases the seal, reduces gaps, reduces air leakage, and indirectly ensures the dust collection effect.

[0045] In another implementation scheme, such as Figures 1-7 As shown, the mounting base 501 is linearly and evenly distributed on the outside of the fixed cylinder 5. The spring reset mechanism 3 includes a mounting plate 301. A positioning slide 302 is movably sleeved on the inner side of the mounting plate 301. A reset spring 303 is sleeved on the outer side of the positioning slide 302. The top ends of the positioning slide 302 and the reset spring 303 are fixedly installed on the bottom of the mounting base 501. The bottom of the reset spring 303 is fixedly installed on the top of the mounting plate 301. The mounting plate 301 is fixedly installed on the top of the positioning frame 202. The positioning slide 302 movably passes through the mounting plate 301 and extends into the interior of the positioning frame 202. The position of the electromagnet 6 corresponds to the position of the mounting base 501. The mounting base 501 is made of ferromagnetic material. The electromagnet 6 is fixedly installed on the top of the positioning frame 202. The spring reset mechanism 3 and the electromagnet 6 are linearly and evenly distributed on the outside of the fixed cylinder 5.

[0046] After the operation is completed, the electromagnet 6 is de-energized and demagnetized. At this time, the mounting base 501 and the fixed cylinder 5 are reset under the elastic force of the return spring 303, causing the rigid cylinder 703 and the flexible fabric mechanism 7 to move upward. This allows the flexible fabric mechanism 7 to detach from the support rail 101 and the dust collection pipe 1, and it can automatically separate during the trolley's movement, thus not affecting the movement or damaging the sealing device. During operation, the electromagnet 6 attracts and tightly connects the lower flexible fabric mechanism 7 with the dust collection pipe 1 and the top of the support rail 101, achieving a sealing effect. When not in operation, the electromagnet 6... When magnet 6 is de-energized, the flexible fabric mechanism 7 automatically separates from the dust collection pipe 1 and the support rail 101, thus not affecting movement and avoiding damage. The sealing surface of the flexible fabric mechanism 7 and the support rail 101 is made of flexible fabric, which can overcome the damage to the equipment caused by the rigid structure and make the seal more reliable. Especially during operation, the negative pressure of the system makes the sealing performance good. Through the design of electromagnet 6 and lifting structure, on the one hand, the sealing structure can be more tightly combined during operation, and on the other hand, it can be separated when the trolley is not in operation, thus not affecting movement and avoiding damage.

[0047] In another implementation scheme, such as Figures 1-6 As shown, the magnetic edge 901 is made of a mixture of magnetic powder and belt base material. The magnetic powder is a type of ferrite magnetic powder and neodymium iron boron magnetic powder. The reinforcing ribs 902 are linearly and evenly distributed inside the sealing belt 9. The size of the sealing belt 9 is adapted to the size of the support rail 101. The sealing belt 9 is movably wrapped around the top of the top positioning roller 10 and the bottom of the bottom positioning roller 12. The bottom positioning roller 12 rolls the sealing belt 9 to fit against the top of the support rail 101. The size of the sealing belt 9 is adapted to the size of the traveling frame beam 2.

[0048] The magnetic edge 901 is made of a mixture of magnetic powder and belt base material, which can provide sealing and a certain magnetic attraction, allowing the sealing belt 9 to fit against the top of the support track 101, reducing gaps and ensuring position. The sealing belt 9 is slidably limited on the inside of the traveling frame beam 2, and can also be limited by additional rolling limit supports, thereby increasing the relative stability of the structure. The sealing belt 9 can be laid on the top of the support track 101, and the top positioning roller 10 and bottom positioning roller 12 lift the sealing belt 9 to provide space for the flexible fabric mechanism 7. The reinforcing ribs 902 provide structural support for the inside of the sealing belt 9, reducing deformation, and can achieve traversal and sealing on the top of the support track 101, thereby increasing the sealing performance and operational stability of the structure.

[0049] In another implementation scheme, such as Figures 1-11As shown, the cleaning mechanism 11 includes a first side mounting bracket 1101 and a second side mounting bracket 1111. A bearing seat 1109 is fixedly mounted on the bottom of the second side mounting bracket 1111. A rotating rubber wheel 1108 is movably sleeved on the inner side of the bottom end of the bearing seat 1109. A gearbox 1107 is drive-connected to the bottom end of the rotating rubber wheel 1108. A fixing rod 1110 is fixedly mounted on the outer shell of the gearbox 1107. The fixing rod 1110 is U-shaped, and the end of the fixing rod 1110 away from the gearbox 1107 is fixedly mounted on the outer side of the second side mounting bracket 1111. A flexible connecting shaft 1103 is drive-connected to the output end of the gearbox 1107. Several bristles 1105 are fixedly installed on the outer side of the flexible connecting shaft 1103. Three limiting bearings 1104 are movably sleeved on the outer side of the flexible connecting shaft 1103. Cross brackets 1102 are fixedly installed on the outer walls of the three limiting bearings 1104 on opposite sides. A horizontal bracket 1106 is fixedly installed on the top of the cross bracket 1102. A bearing seat 2 1112 is fixedly installed at the end of the flexible connecting shaft 1103 away from the gearbox 1107. The inner side of the top of the bearing seat 2 1112 is movably sleeved on the outer side of the bottom end of the side mounting bracket 1 1101. Both the side mounting bracket 1 1101 and the side mounting bracket 2 1111 are fixedly installed on the inner wall of the flue gas conversion bend 8.

[0050] During operation, dust accumulates and adheres inside the dust collection duct 1. The traveling frame beam 2 moves along with the mechanical vehicle at the top of the dust collection duct 1. The rotating rubber wheel 1108 contacts the inner side of the support rail 101, causing it to rotate and transmitting the rotational force to the gearbox 1107. The gearbox 1107 then drives the flexible connecting shaft 1103 to rotate via its output shaft. The flexible connecting shaft 1103 is then positioned at the limit shaft. Under the movable sleeve of bearing 1104, the relative positions are maintained. After the flexible connecting shaft 1103 rotates, it drives the brush bristles 1105 to rotate relative to the inner wall of the dust collection dry pipe 1. Due to the presence of the gearbox 1107, the rotation speed of the brush bristles 1105 is different from the moving speed of the dust collection dry pipe 1, thereby causing the brush bristles 1105 to clean the inner wall of the dust collection dry pipe 1. After the dust flies up, it is sucked out by the negative pressure airflow, thereby reducing the accumulation of dust and indirectly reducing the cleaning and maintenance cycle of the dust collection dry pipe 1 and reducing the cleaning frequency.

[0051] In another implementation scheme, such as Figures 1-11As shown, the outer side of the rotating rubber wheel 1108 rolls in contact with the inner side of the support rail 101, and the bottom end of the rotating rubber wheel 1108 is connected to the input end of the gearbox 1107. The bristles 1105 are evenly distributed in a circular linear pattern on the outer side of the flexible connecting shaft 1103. The outer side of the bristles 1105 is in contact with the inner wall of the dust collection dry pipe 1. The horizontal bracket 1106 is fixedly installed on the opposite side of the side mounting bracket 1111 and the side mounting bracket 1101. The flexible connecting shaft 1103 is annular, and the specifications and dimensions of the flexible connecting shaft 1103 are adapted to the specifications and dimensions of the dust collection dry pipe 1.

[0052] Side mounting brackets 1111 and 1101 are fixed to the inner wall of the flue gas conversion bend 8, providing a fixed and support position for the bottom structure. Unaffected by the expansion and contraction of the bottom structure, they ensure that the brush bristles 1105 remain in position with the dust collection dry pipe 1. Bearing seats 1109 and 1112 provide rotational support for the structure. Because side mounting brackets 1111 and 1101 are fixed, bearing seats 1109 and 1112 provide rotational support for the bottom structure, maintaining the rotation of the rotating rubber wheel 1108 and the flexible connecting shaft 1103. The flexible connecting shaft 1103 uses a ring-shaped soft connection structure, possessing flexible rotation capability; its core function is to transmit... The power source drives the brush 1105 to clean the inner wall of the dust collection pipe 1, while the rotating rubber wheel 1108 rolls in contact with the inner side of the support rail 101, providing power for the rotation of the structure. The rotational power of the rotating rubber wheel 1108 is transmitted to the input end of the gearbox 1107. After being driven, the gears inside the gearbox 1107 are changed, generally in an accelerated state. The output shaft of the gearbox 1107 drives the flexible connecting shaft 1103 to rotate, so that there is a speed difference between the rotation speed of the brush 1105 and the movement of the dust collection pipe 1, thereby cleaning the inner wall of the dust collection pipe 1 more efficiently. The overall structure is simple, has no power drive, can cooperate with the operation, increases the convenience of use, and shortens the frequency of equipment maintenance.

[0053] Please see Figures 1-11 The present invention provides a technical solution: a method for using a belt trolley with a flue gas sealing structure, the method comprising the following steps:

[0054] S1. In use, the flue gas conversion bend 8 is connected to the dust collection guide pipe of the mechanical vehicle (coal charging car, coke pushing car or coke quenching car), and the dust collection main pipe 1 is connected to the negative pressure dust removal system. The sealing belt 9 is laid on the outside of the support rail 101. Then, the traveling frame beam 2 and the track wheel 201 are placed on the top of the dust collection main pipe 1 and the support rail 101. The track wheel 201 is rolled on the outside of the dust collection main pipe 1, and the sealing belt 9 passes through the bottom of the bottom positioning roller 12 and the top of the top positioning roller 10, supporting the sealing belt 9. After installation, as the mechanical vehicle coal charging car, coke pushing car or coke quenching car travels along the furnace length direction, that is, along the top direction of the support rail 101.

[0055] S2. During operation, the coal loading car, coke pushing car, or coke quenching car generates some smoke and dust. At this time, the dust collection main pipe 1 has a negative pressure suction airflow inside. When the electromagnet 6 is energized, it generates suction force, causing the mounting base 501 and the fixed cylinder 5 to move down and stretching the flexible connecting telescopic cylinder 4. At this time, the fixed cylinder 5 and the rigid cylinder 703 move down under the sliding limit of the positioning frame 202, so that the flexible fabric mechanism 7 contacts the top of the support rail 101. The flexible rubber plate 702 extends between the bottom positioning roller 12 and the flexible fabric mechanism 7, reducing the airflow gap. At this time, the airflow is connected through the flue gas conversion bend 8, causing the dust collection part of the mechanical vehicle to be guided out of the smoke and dust by the airflow. It is connected to the interior of the fixed cylinder 5 and the rigid cylinder 703 through the flue gas conversion bend 8 and the flexible connecting telescopic cylinder 4. Finally, the flexible fabric mechanism 7 connects to the support rail 101, so that the airflow and smoke and dust enter the interior of the dust collection main pipe 1, and are then guided to the smoke and dust treatment system for treatment through the dust collection main pipe 1.

[0056] S3. After the operation is completed, the electromagnet 6 is de-energized and demagnetized. At this time, the mounting base 501 and the fixed cylinder 5 are reset under the elastic force of the return spring 303, causing the rigid cylinder 703 and the flexible fabric mechanism 7 to move upward, thereby causing the flexible fabric mechanism 7 to detach from the support rail 101 and the dust collection pipe 1. It can also automatically separate during the trolley's movement, thus not affecting the movement or damaging the sealing device. When working, the electromagnet 6 uses its attraction to tightly connect the lower flexible fabric mechanism 7 with the dust collection pipe 1 and the top of the support rail 101, achieving a sealing effect. When not working, the electromagnet 6... When magnet 6 is de-energized, the flexible fabric mechanism 7 automatically separates from the dust collection pipe 1 and the support rail 101, thus not affecting movement and avoiding damage. The sealing surface of the flexible fabric mechanism 7 and the support rail 101 is made of flexible fabric, which can overcome the damage to the equipment caused by the rigid structure and make the seal more reliable. Especially during operation, the negative pressure of the system makes the sealing performance good. Through the design of electromagnet 6 and lifting structure, on the one hand, the sealing structure can be more tightly combined during operation, and on the other hand, it can be separated when the trolley is not in operation, thus not affecting movement and avoiding damage.

[0057] S4. During operation, the belt trolley connects to the coal charging car, coke pushing car, or coke quenching car via the flue gas conversion bend 8 and moves synchronously along the furnace length. When it reaches the working position, it performs coke discharge and coal charging operations. At this time, the dust removal system is activated. The flexible fabric mechanism 7 seals the space between itself and the support rail 101, and the sealing belt 9 seals the opening of the support rail 101. This allows the dust collected by the flue gas conversion bend 8 to enter the dust collection main pipe 1 via the belt trolley and finally enter the ground dust removal station for processing. When the operation ends, the dust removal system stops working, the belt trolley sealing structure separates, and the coal charging car, coke pushing car, or coke quenching car continues to move for the next furnace operation.

[0058] S5. During operation, dust will adhere and accumulate inside the dust collection duct 1. At this time, the traveling frame beam 2 moves along with the mechanical vehicle at the top of the dust collection duct 1. The rotating rubber wheel 1108 contacts the inner side of the support rail 101, causing the rotating rubber wheel 1108 to rotate and transmitting the rotational force to the gearbox 1107. After the gearbox 1107 changes speed, the output shaft drives the flexible connecting shaft 1103 to rotate. The flexible connecting shaft 1103 is in a limited position... The bearing 1104 maintains a relative position under the movable sleeve. After the flexible connecting shaft 1103 rotates, it drives the brush bristles 1105 to rotate relative to the inner wall of the dust collection dry pipe 1. Due to the presence of the gearbox 1107, the rotation speed of the brush bristles 1105 is different from the moving speed of the dust collection dry pipe 1, thereby causing the brush bristles 1105 to clean the inner wall of the dust collection dry pipe 1. After the dust flies up, it is sucked out by the negative pressure airflow, thereby reducing the accumulation of dust and indirectly reducing the cleaning and maintenance cycle of the dust collection dry pipe 1 and reducing the cleaning frequency.

[0059] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A belt trolley with a fume sealing structure, comprising a dust collection main pipe (1), a walking frame beam (2) and a sealing belt (9), characterized in that: The both sides of the top of the dust collection dry pipe (1) are fixedly installed with support rails (101), the bottom of the walking frame beam (2) is rollingly installed with four rail wheels (201), the bottom end of the middle part of the walking frame beam (2) is fixedly installed with a positioning frame (202), the inner side of the positioning frame (202) is movably sleeved with a hard cylinder (703), the top of the hard cylinder (703) is communicated with a fixed cylinder (5), the top of the fixed cylinder (5) is communicated with a soft connection telescopic cylinder (4), the top of the soft connection telescopic cylinder (4) is communicated with a flue gas conversion elbow (8), the bottom of the hard cylinder (703) is fixedly installed with a flexible fabric mechanism (7), the outer sides of the both ends of the flexible fabric mechanism (7) are fixedly installed with side supports (701), the outer sides of the side supports (701) are fixedly installed with flexible rubber plates (702) through bolts, the front and back surfaces of the fixed cylinder (5) are fixedly installed with a plurality of mounting seats (501), the outer side of the fixed cylinder (5) is installed with a plurality of spring return mechanisms (3), the outer side of the fixed cylinder (5) is installed with a plurality of electromagnets (6), the inner side of the hard cylinder (703) is rollingly installed with a plurality of support wheels (13) through supports, the inner side of the flue gas conversion elbow (8) is fixedly installed with two groups of cleaning mechanisms (11) on the outer side of the top end of the walking frame beam (2), the inner side of the top end of the walking frame beam (2) is rollingly installed with two top positioning rollers (10), the inner side of the bottom end of the walking frame beam (2) is rollingly installed with two bottom positioning rollers (12), the mounting seats (501) are linearly and uniformly distributed on the outer side of the fixed cylinder (5), the spring return mechanism (3) comprises a mounting plate (301), the inner side of the mounting plate (301) is movably sleeved with a positioning slide column (302), the outer side of the positioning slide column (302) is sleeved with a return spring (303), the top end of the positioning slide column (302) and the return spring (303) is fixedly installed at the bottom of the mounting seat (501), the bottom of the return spring (303) is fixedly installed at the top of the mounting plate (301), the mounting plate (301) is fixedly installed at the top of the positioning frame (202), the positioning slide column (302) movably penetrates through the mounting plate (301) and extends into the inside of the positioning frame (202), the position of the electromagnet (6) corresponds to the position of the mounting seat (501), the mounting seat (501) is made of ferromagnetic material, the electromagnet (6) is fixedly installed at the top of the positioning frame (202), the spring return mechanism (3) and the electromagnet (6) are linearly and staggered and uniformly distributed on the outer side of the fixed cylinder (5); The inner sides of the both sides of the sealing belt (9) are provided with magnetic attraction edges (901), the inner side of the sealing belt (9) is fixedly installed with reinforcing ribs (902), and the sealing belt (9) is laid on the top of the support rail (101).

2. The belt trolley with a fume seal structure according to claim 1, characterized in that: Four said track wheels (201) size and the size of the support rail (101) compatible, and four track wheels (201) located in the outer edge of the support rail (101), the dust collection pipe (1) for negative pressure dust removal system gas flow pipe.

3. The belt car with a fume seal structure according to claim 2, characterized in that: The smoke conversion elbow (8) is fixedly installed on the inner side of the walking frame beam (2), and the smoke conversion elbow (8) extends to the outer side of the walking frame beam (2) in the form of an elbow, and the size of the fixed cylinder (5) is adapted to the size of the positioning frame (202).

4. The belt skid with the smoke seal structure according to claim 3, characterized in that: The size of the flexible fabric mechanism (7) is adapted to the size of the dust collection pipe (1), the outer side of the flexible fabric mechanism (7) is located at the top of the support rail (101), the size of the side support (701) and the flexible rubber plate (702) is adapted to the size of the support rail (101), the position of the support wheel (13) corresponds to the top position of the support rail (101), and the support wheel (13) is linearly and uniformly distributed on the inner side of the hard cylinder (703).

5. The belt skid with a fume seal structure according to claim 4, characterized in that: The magnetic edge (901) is made of magnetic powder and belt base material, and the magnetic powder is one of ferrite magnetic powder and neodymium iron boron magnetic powder. The reinforcing rib (902) is linearly and uniformly distributed in the inside of the sealing belt (9). The size of the sealing belt (9) is adapted to the size of the support rail (101). The sealing belt (9) is movably wound on the top of the top positioning roller (10) and the bottom of the bottom positioning roller (12). The bottom positioning roller (12) is rolled to make the sealing belt (9) fit the top of the support rail (101). The size of the sealing belt (9) is adapted to the size of the walking frame beam (2).

6. The belt skid with a fume seal structure according to claim 5, characterized in that: The cleaning mechanism (11) includes a side mounting frame one (1101) and a side mounting frame two (1111), the bottom of the side mounting frame two (1111) is fixedly installed with a bearing seat one (1109), the inner side of the bottom end of the bearing seat one (1109) is movably sleeved with a rotating rubber wheel (1108), the bottom end of the rotating rubber wheel (1108) is transmissionally connected with a gear box (1107), the shell of the gear box (1107) is fixedly installed with a fixed rod (1110), the fixed rod (1110) is U-shaped, and one end of the fixed rod (1110) away from the gear box (1107) is fixedly installed on the outer side of the side mounting frame two (1111), the output end of the gear box (1107) is transmissionally connected with a flexible connection rotating shaft (1103), the outer side of the flexible connection rotating shaft (1103) is fixedly installed with a plurality of bristles (1105), the outer side of the flexible connection rotating shaft (1103) is movably sleeved with three limit bearings (1104), the outer walls of the opposite sides of the three limit bearings (1104) are fixedly installed with a cross support (1102), the top of the cross support (1102) is fixedly installed with a horizontal support (1106), one end of the flexible connection rotating shaft (1103) away from the gear box (1107) is fixedly installed with a bearing seat two (1112), the inner side of the top end of the bearing seat two (1112) is movably sleeved on the outer side of the bottom end of the side mounting frame one (1101), and the side mounting frame one (1101) and the side mounting frame two (1111) are fixedly installed on the inner wall of the smoke conversion elbow (8).

7. The belt skid with a fume seal structure according to claim 6, characterized in that: The outer side of the rotating rubber wheel (1108) is in rolling contact with the inner side of the supporting track (101), the bottom end of the rotating rubber wheel (1108) is transmissionally connected with the input end of the gear box (1107), the bristles (1105) are uniformly distributed in a circumferential line on the outer side of the flexible connection rotating shaft (1103), the outer side of the bristles (1105) is in contact with the inner wall of the dust collection main pipe (1), the horizontal support (1106) is fixedly installed on the opposite sides of the side mounting frame two (1111) and the side mounting frame one (1101), the flexible connection rotating shaft (1103) is annular, and the specification size of the flexible connection rotating shaft (1103) is matched with the specification size of the dust collection main pipe (1).

8. A method of using a belt cart having a fume containment structure, the method comprising: The application of a belt trolley with a smoke sealing structure as claimed in claim 7 comprises the following steps: S1, in use, by connecting the flue gas conversion elbow (8) with the dust collection guide pipe of the mechanical vehicle, and connecting the dust collection main pipe (1) with the negative pressure dust removal system, laying the sealing belt (9) on the outside of the support rail (101), then placing the walking frame beam (2) and the rail wheel (201) on the top of the dust collection main pipe (1) and the support rail (101), and rolling the rail wheel (201) on the outside of the dust collection main pipe (1), and making the sealing belt (9) pass through the bottom of the bottom positioning roller (12) and the top of the top positioning roller (10), the sealing belt (9) is lifted, after installation, along with the walking of the mechanical vehicle in the length direction of the furnace, that is, in the direction of the top of the support rail (101); S2, in operation, the coal car, coke pushing car or coke blocking car generates part of the smoke dust due to operation, at this time, the inside of the dust collection main pipe (1) has negative pressure suction airflow, at this time, the electromagnet (6) is energized to generate suction force, the mounting seat (501) and the fixed cylinder (5) are lowered, and the soft connection telescopic cylinder (4) is stretched to extend, at this time, the fixed cylinder (5) and the hard cylinder (703) are lowered under the sliding limit of the positioning frame (202), so that the flexible fabric mechanism (7) contacts the top of the support rail (101), and the flexible rubber plate (702) extends between the bottom positioning roller (12) and the flexible fabric mechanism (7), reducing the airflow gap, at this time, the airflow passes through the communication of the flue gas conversion elbow (8), the dust collection part of the mechanical vehicle is guided by the airflow to flow out the smoke dust, and the smoke dust is communicated to the inside of the fixed cylinder (5) and the hard cylinder (703) through the flue gas conversion elbow (8) and the soft connection telescopic cylinder (4), finally, the flexible fabric mechanism (7) is connected to the support rail (101), so that the airflow and the smoke dust enter the inside of the dust collection main pipe (1), and then are guided to the smoke dust treatment system through the dust collection main pipe (1) for treatment; S3, after the operation is completed, the electromagnet (6) is de-energized, at this time, the mounting seat (501) and the fixed cylinder (5) are reset under the elastic force of the reset spring (303), the hard cylinder (703) and the flexible fabric mechanism (7) are lifted, and the flexible fabric mechanism (7) is separated from the support rail (101) and the dust collection main pipe (1), and can be automatically separated during the walking of the trolley, so as not to affect the walking and damage the sealing device, when working, the flexible fabric mechanism (7) is combined with the dust collection main pipe (1) and the top of the support rail (101) by the suction effect of the electromagnet, and plays a sealing role, when not working, the electromagnet (6) is de-energized, the flexible fabric mechanism (7) is separated from the dust collection main pipe (1) and the support rail (101), so as not to affect the walking and avoid damage, the sealing surface of the flexible fabric mechanism (7) and the support rail (101) adopts flexible fabric. S4, working process, the belt trolley is connected with the coal loading trolley, the coke pushing trolley or the coke blocking trolley through the flue gas conversion elbow (8), and moves along the furnace length direction synchronously with them, and moves to the working position to carry out the coke discharging and coal loading operation, at this time, the dust removal system works, the flexible fabric mechanism (7) is sealed with the supporting rail (101), and the opening position of the supporting rail (101) is sealed through the sealing belt (9), so that the smoke dust collected through the flue gas conversion elbow (8) enters the dust collection main pipe (1) through the belt trolley, finally enters the ground dust removal station for treatment, the working is finished, the dust removal system stops working, the sealing structure of the belt trolley is sealed and separated, and the mechanical vehicle continues to move to carry out the next furnace operation; S5, during the operation, since the smoke dust will produce certain adhesion and accumulation in the dust collection main pipe (1), at this time, the walking frame beam (2) moves on the top of the dust collection main pipe (1) along with the movement of the mechanical vehicle, since the rotating rubber wheel (1108) is in contact with the inner side of the supporting rail (101), the rotating rubber wheel (1108) is rotated, and the rotating force is transmitted to the gear box (1107), the flexible connection shaft (1103) is driven to rotate by the output shaft of the gear box (1107) after speed change, the flexible connection shaft (1103) keeps the relative position under the activity sleeve of the limiting bearing (1104), the flexible connection shaft (1103) drives the brush (1105) to rotate relative to the inner wall of the dust collection main pipe (1) after rotation, since the gear box (1107) exists, the rotation of the brush (1105) is different from the moving speed of the dust collection main pipe (1), so that the brush (1105) sweeps the inner wall of the dust collection main pipe (1), the smoke dust is sucked out through the negative pressure airflow after flying, so as to reduce the accumulation of smoke dust, indirectly reduce the cleaning and maintenance period of the dust collection main pipe (1), and reduce the cleaning frequency.

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