CN207815363U - Flue automatic ash removing device - Google Patents

Abstract

The utility model relates to an automatic dust cleaning device for a flue, which comprises a flue body, a cleaning ring, a sliding assembly, a rope drive mechanism and an oil and gas supply device. The oil-gas nozzle connected to the oil-gas supply device is fixed, and the outer surface of the oil-gas nozzle is evenly distributed with several air nozzles and oil nozzles; the front and rear sides of the cleaning ring are symmetrically provided with ring tracks, and the ring track is slidingly connected with A slider assembly that can be deployed along the circular track. The top of the slider in the slider assembly is equipped with a cleaning brush or a scraper; The cleaning rings are hinged; the rope drive mechanism is symmetrically arranged on the left and right sides of the cleaning ring, and is used to pull the cleaning ring to rotate and slide axially along the flue body. The utility model has reasonable structural design, high efficiency and convenient use, can effectively carry out automatic dust removal of the flue, and improves the efficiency and reliability of dust removal.

Description

Automatic flue cleaning device

Technical field:

The utility model relates to an automatic dust cleaning device for a flue.

Background technique:

At present, coal-fired industrial boilers are thermal power equipment with a large volume and wide range in my country. There are more than 600,000 coal-fired industrial boilers in China. The exhaust of coal-fired industrial boilers contains flue gas with a temperature as high as 125°C. In addition to water vapor, the dust mainly contains: oxytotal sulfur silica, calcium oxide, aluminum oxide and ferric oxide, etc. These components are easily During the discharge process, it is contaminated on the pipe wall of the exhaust pipe, which reduces the overall discharge efficiency of the boiler. The heat of the high-temperature combustion products generated by combustion is transferred to the water or water vapor in the flue through the heating surface of a series of heat exchange equipment. Molecular attraction, mechanical netting force, thermophoretic force and electrostatic attraction between the tube wall and the tube wall make it adhere to the tube wall on the heating surface, and the resistance of 1mm of dust accumulation to heat transfer is about 50 times that of steel materials , greatly reduces the heat transfer efficiency, and will also affect the normal service life of the flue. Therefore, it is of great significance to design a set of flue dust cleaning device to remove the dust on the wall of the exhaust pipe to improve the emission performance of the boiler.

At present, most of the flue cleaning methods with relatively low cost are regular mechanical cleaning, soot blowing, and manual cleaning. However, when the first two methods are used alone, the effect is not very good, and they do not have the function of automatic cleaning. Manual cleaning requires Coal-fired industrial boilers can only be operated when they are shut down, which is harmful to the human body and takes time and effort. More advanced cleaning methods include ultrasonic, vibration, etc., but the equipment is expensive and there is a certain dead angle in cleaning. At the same time, the existing cleaning equipment does not have the functions of self-cleaning and self-maintenance, and the structure is huge and not suitable for manual maintenance.

Utility model content:

The purpose of this utility model is to address the above deficiencies, to provide an automatic flue dust removal device, which has a reasonable structural design, can effectively carry out automatic flue dust removal, improves the efficiency and reliability of dust removal, and is convenient for maintenance and cleaning.

In order to achieve the above purpose, the technical solution adopted by the utility model is: an automatic flue dust cleaning device, including a cylindrical flue body, a cleaning ring, a sliding assembly, a rope drive mechanism and an oil and gas supply device, the cleaning ring is the same as The shaft is set inside the flue body, and the outer peripheral surface of the cleaning ring is fixed with an oil and gas nozzle connected to the oil and gas supply device. The outer surface of the oil and gas nozzle is evenly distributed with several air nozzles and oil nozzles The front and rear sides of the cleaning ring are symmetrically provided with circular tracks, and a slider assembly that can be deployed along the circular track is slidably connected in the circular track, and the top of the slider in the slider assembly is provided with a cleaning brush or a scraper; the sliding assembly is symmetrically arranged on the left and right ends of the inner wall of the flue body, and the sliding parts on the sliding assembly are hinged to the cleaning ring; the rope drive mechanism is symmetrically arranged on the left and right sides of the cleaning ring , used to pull the cleaning ring to slide along the axial direction of the flue body.

Further, the cleaning ring includes a cleaning ring body and a cross-shaped support frame erected inside the cleaning ring body. The cleaning ring body is composed of a half-ring upper cleaning ring and a lower cleaning ring. The upper cleaning ring The left and right ends of the lower part and the upper part of the lower cleaning ring are fixedly connected through a connecting sleeve respectively, and the axis of the connecting sleeve is arranged horizontally and perpendicular to the axis of the flue body.

Further, the circular track is divided into four sections by a cross-shaped support frame, each section of the circular track includes an inner ring track and an outer ring track with a T-shaped cross section, and each section of the circular track is provided with a The track trolley and slider assembly that move around the ring track and the outer ring track. The top of the track trolley is provided with an installation groove A for installing cleaning brushes or scrapers; the slider assembly includes several sliders distributed along the ring track. block, the top of the slider is provided with an installation groove B for installing a cleaning brush or a scraper, the top of the slider located at the rear side of the cleaning ring is equipped with a cleaning brush, and the top of the slider located at the front side of the cleaning ring is equipped with a scraper ;Several sliders are distributed obliquely. Among the two adjacent sliders, the upper part of the lower slider is symmetrically hinged with a T-shaped interconnecting rod, and the inner surface of the upper slider is symmetrical up and down. There is an interconnection chute extending along its length direction, the section of the interconnection chute is T-shaped, and the upper end of the interconnection rod is embedded in the interconnection chute and forms a sliding pair with the interconnection chute; Among the plurality of slide blocks, the uppermost slide block is fixedly connected with the track trolley, and the lowermost slide block is fixedly connected with the bottom of the outer ring track in the upper cleaning ring or the upper part of the outer ring track in the lower cleaning ring.

Further, the interconnection chute includes a circular arc segment and a straight line segment, the circular arc segment is located on the lower side of the straight line segment, and the upper end surface of the slider is symmetrically provided with interconnecting chute corresponding to the interconnection chute. rod installation groove, the lower end of the interconnection rod is accommodated in the interconnection rod installation groove and is hinged with the interconnection rod installation groove through a pin shaft, when the track trolley pushes the uppermost slider to slide down along the circular track, the The interconnecting rod slides from the arc section of the interconnecting chute to the end of the straight section, so that several sliders are stacked in sequence; a connecting rod is arranged symmetrically up and down on the inner surface of the slider, and the The outer end is hinged with the slider through a hinge, and the inner end of the connecting rod is connected with a slider roller, and the two slider rollers are respectively embedded in the outer ring track and the inner ring track to form a sliding pair; on several sliders The length of the connecting rod increases successively from the receiving end to the unfolding end.

Further, the sliding assembly includes two slide rails parallel to the axis of the flue body, and a sliding member that can move along the slide rails, and the two slide rails are installed at both ends of the horizontal diameter line of the flue body; The slider includes a connecting plate parallel to the slide rail, the front and rear ends of the connecting plate are respectively connected with slide rail rollers which are embedded in the slide rail and can move along the slide rail, and the middle part of the connecting plate is fixed with a The supporting shaft extending radially along the flue body, the supporting shaft passes through the connecting sleeve, the supporting shaft and the connecting sleeve are connected through bearing rotation, and the supporting shaft passes through the connecting sleeve end and is fixedly connected with a U-shaped limit with the opening facing downward. Position frame, the front and rear vertical parts of the U-shaped spacer are respectively located on the front and rear sides of the cross-shaped support frame, and the lower parts of the left and right ends of the cross-shaped support frame are respectively vertically provided with a fixed rod. The lower end of the rear side of the fixed rod is fixedly connected with a horizontally arranged L-shaped stop bar, and the long side of the L-shaped stop bar fits with the vertical part on the rear side of the U-shaped stop frame.

Further, the rope drive mechanism includes a front pulling motor set and a rear pulling motor set symmetrically arranged at the front and rear ends of the flue body, and the front pulling motor set includes symmetrically arranged left and right sides of the front end of the flue body The front pull motor A and the front pull motor B, the motor shafts of the front pull motor A and the front pull motor B respectively pass through the front end edge of the flue body and are fixedly connected with a front connecting ring, the front connecting ring and the lower end of the fixed rod Connected by a front steel rope; the rear pulling motor unit includes a rear pulling motor A and a rear pulling motor B symmetrically arranged on the left and right sides of the rear end of the flue body, and the motor shaft of the rear pulling motor A is connected with a speed reducer The upper and lower output shafts of the reducer respectively pass through the rear end edge of the flue body and are fixedly connected with a rear connecting ring A; the motor shaft of the rear pulling motor B passes through the rear end edge of the flue body and is fixed A rear connection ring B is connected, and the rear connection ring B, the rear connection ring A on the lower output shaft of the speed reducer and the lower end of the fixed rod are respectively connected through a rear steel rope.

Further, the oil and gas nozzle is provided with a fuel injection pipe and an air injection pipe, and several fuel injection nozzles are connected with the fuel injection pipe, and several air injection nozzles are connected with the air injection pipe; the oil and gas supply device includes a high-pressure air pump, an oil pump, and a three-way pipe connection parts, the high-pressure air pump is arranged on the upper side of the rear pulling motor A, and the air outlet of the high-pressure air pump is connected with an air pipe; the oil pump is installed at the bottom of the flue body, and the oil outlet of the oil pump is connected with an oil pipe A; the three The through-pipe connector is set on the top of the reducer, and the oil delivery pipe A and the gas delivery pipe extend from the two-way ports of the tee pipe connector and protrude from the middle port respectively, and the oil delivery pipe A and the gas delivery pipe respectively It is connected with the oil injection pipe and the air injection pipe. The middle port of the three-way connector is connected with an oil and gas delivery sleeve sleeved on the outside of the oil delivery pipe A and the gas delivery pipe. The connecting ring A is wound and connected with the oil and gas nozzle.

Further, the rear port of the flue body is connected to dust removal equipment, and the bottom of the rear end of the flue body is provided with an arc-shaped discharge port, and the lower end of the discharge port is connected with a soot oil hopper for collecting soot and cleaning oil. The soot oil hopper is provided with a coarse filter and a fine filter in sequence from top to bottom. The bottom of the soot oil hopper is connected to the clean oil filter installed at the bottom of the flue body through an oil delivery pipe B, and the output of the clean oil filter is The mouth is connected with the oil inlet of the oil pump through an oil delivery pipe C.

Further, the inner wall of the flue body is also provided with a photoelectric detection assembly for detecting the thickness of the ash accumulation. The photoelectric detection assembly includes several photoelectric sensors installed side by side in the axial direction at the bottom of the inner wall of the flue body. Light sources corresponding to several photoelectric sensors are installed on the top, and the photoelectric sensors are electrically connected with the front pull motor A, the front pull motor B, the back pull motor A and the back pull motor B through the main control unit.

Compared with the prior art, the utility model has the following effects:

(1) The cleaning ring adopts a rim structure, which can reduce the cleaning dead angle in the flue, improve the cleaning effect, and achieve the purpose of cleaning the flue in all directions;

(2) The cleaning ring is driven by the rope drive mechanism, and the cleaning ring is pulled back and forth to move along the axial direction by winding, retracting and retracting the front and rear steel ropes. The structure is simple, the control is convenient, and it is convenient to realize the large-distance movement of the cleaning ring;

(3) The cleaning ring has the functions of air injection, oil injection, sweeping and scraping, and the working mode can be switched according to the needs, which is convenient to use; at the same time, the cleaning brush and scraper on the cleaning ring can be stored, which is convenient for the staff to clean the cleaning brush and scrape. Centralized maintenance and replacement of boards;

(4) Coarse and fine filters are installed in the soot oil hopper, which can separate the ash and oil from the oil. At the same time, the separated oil is sent to the oil pump after being treated by the clean oil filter for recycling, saving resources;

(5) A photoelectric detection component is installed in the flue to detect the thickness of ash accumulation, and the signal detected by the sensor is used to control the action of the rope drive mechanism, which improves the accuracy of flue dust cleaning control, avoids blind cleaning, and improves work efficiency;

(6) The utility model has reasonable structural design, high efficiency and convenient use, can effectively carry out automatic dust removal of the flue, and improves the efficiency and reliability of dust removal.

Description of drawings:

Fig. 1 is the front view sectional structure schematic diagram of the utility model embodiment;

Fig. 2 is the right view structure diagram of the utility model embodiment;

Fig. 3 is a three-dimensional structural schematic diagram of an embodiment of the utility model;

Fig. 4 is the three-dimensional structure schematic diagram II of the utility model embodiment;

Fig. 5 is a schematic diagram of the overall structure of the utility model embodiment three;

Fig. 6 is a schematic diagram of the installation structure of the cleaning ring and the slide rail;

Fig. 7 is a structural schematic diagram of the unfolded state of the slider assembly on the cleaning ring;

Fig. 8 is a structural schematic diagram 1 of the retracted state of the slider assembly on the cleaning ring;

Fig. 9 is a structural schematic diagram II of the retracted state of the slider assembly on the cleaning ring;

Fig. 10 is a schematic diagram of the connection between the sliders when the slider assembly is in a retracted state;

Fig. 11 is a schematic diagram of the connection between the sliders when the slider assembly is unfolded;

Fig. 12 is a schematic diagram of the three-dimensional structure of the slider;

Fig. 13 is a schematic diagram of the connection inside of the two upper side track cars;

Fig. 14 is a schematic diagram of the connection outside of the two upper rail trolley supports;

Fig. 15 is a schematic diagram of the inner structure of the lower rail trolley;

Fig. 16 is a schematic cross-sectional structure diagram of the soot oil hopper.

In the picture:

1- flue body; 2- cleaning ring; 201- upper cleaning ring; 202- lower cleaning ring; 203- cross support frame; 204- limit groove; Nozzle; 6-circular track; 601-outer ring track; 602-inner ring track; 7-slider assembly; 701-slider; 702-installation groove B; 703-interconnecting rod; 704-interconnecting chute; 7041 - arc section; 7042-straight line section; 705-connecting rod installation groove; 706-connecting rod; 707-slider roller; 708-hinge; 8-cleaning brush; 9-scraper; Track trolley; 111-upper track trolley; 1110-T-shaped groove A; 1111-T-shaped bar A; 112-lower side track trolley; 1120-T-shaped groove B; 1121-T-shaped bar B; 113-car Body; 114-trolley roller; 115-installation groove A; 12-slide rail; 13-connecting plate; 14-slide rail roller; 15-support shaft; 16-U-shaped limit frame; 19-front pull motor A; 20-front pull motor B; 21-front steel rope; 22-back pull motor A; 23-back pull motor B; 24-reducer; 241-reducer output Shaft; 242-reducer lower output shaft; 25-rear steel rope; 26-photoelectric sensor; 27-capacitance sensor; 28-high pressure air pump; 29-oil pump; 30-tee pipe connector; Oil pipeline A; 33-oil and gas transmission casing; 34-dust removal equipment; 35-soot oil bucket; 36-coarse filter; 37-fine filter; 38-oil pipeline B; 39-clean oil filter; 41 - Motor bracket.

Detailed ways:

Below in conjunction with accompanying drawing and specific embodiment, the utility model is described in further detail.

As shown in Figures 1-5, the utility model is an automatic flue cleaning device, which includes a cylindrical flue body 1, a cleaning ring 2, a sliding assembly, a rope drive mechanism and an oil and gas supply device, and the cleaning ring 2 is the same as The shaft is arranged inside the flue body 1, and the oil and gas nozzle 3 connected with the oil and gas supply device is fixed on the outer peripheral surface of the cleaning ring 2, and the outer surface of the oil and gas nozzle 3 is evenly distributed with several air nozzles 4 and the fuel injection nozzle 5, which are convenient to spray air or oil to the inside of the flue body 1, and improve the cleaning effect; the front and rear sides of the cleaning ring 2 are symmetrically provided with a ring track 6, and the ring track 6 is slidingly connected with The slider assembly 7 that can be deployed along the circular track 6, the top of the slider 701 in the slider assembly 7 is provided with a cleaning brush 8 or a scraper 9 that fits with the inner wall of the flue body 1; Symmetrically arranged on the left and right ends of the inner wall of the flue body 1, the sliding parts on the sliding assembly are hinged to the cleaning ring 2; the rope drive mechanism is symmetrically arranged on the left and right sides of the cleaning ring 2 to pull the cleaning ring The ring 2 slides along the axial direction of the flue body 1 .

As shown in Figures 6-9, in this embodiment, the cleaning ring 2 includes a cleaning ring body and a cross-shaped support frame 203 erected inside the cleaning ring body. The cleaning ring body and the cross-shaped support frame 203 cooperate to form a rim type The structure, in which the cross-shaped support frame 203 is used, can ensure the smooth exhaust of the flue body and improve the overall rigidity of the cleaning ring. The cleaning ring body is composed of a semi-annular upper cleaning ring 201 and a lower cleaning ring 202, the left and right ends of the lower part of the upper cleaning ring 201 and the upper part of the lower cleaning ring 202 are respectively connected by a connecting sleeve 10. Fixed connection, the axis of the connecting sleeve 10 is arranged horizontally and perpendicular to the axis of the flue body 1 .

In this embodiment, the circular track 6 is divided into four sections by the cross-shaped support frame 203, and each section of the circular track 6 includes an inner ring track 602 and an outer ring track 601 with a T-shaped cross section, and each section of the circular track 6 There are track trolleys 11 and slider assemblies 7 that can move along the inner ring track 602 and the outer ring track 601 inside. The top of the track trolley 11 is provided with an installation groove A for installing cleaning brushes 8 or scrapers 9. Scraper 9 is installed on the top of the track car 11 on the front side of the cleaning ring 2, and a cleaning brush 8 is installed on the top of the track car 11 on the rear side of the cleaning ring 2.

The slider assembly 7 includes several sliders 701 distributed along the circular track 6, the top of the sliders 701 is provided with a mounting groove B702 for installing the cleaning brush 8 or scraper 9, and the rear side of the cleaning ring 2 is located A cleaning brush 8 is installed on the top of the slider 701, and a scraper 9 is installed on the top of the slider 701 located at the front side of the cleaning ring 2. The cleaning brush 8 or scraper 9 forms a ring-shaped working surface along with the expansion of the slider assembly 7. ; When the flue needs to be cleaned, the cleaning ring 2 moves from front to back, and the cleaning brush 8 on the rear side of the cleaning ring 2 contacts with the ash accumulation on the inner wall of the flue body 1 earlier to loosen the ash accumulation, while the cleaning ring 2 The scraper 9 on the front side will scrape the accumulated dust that is difficult to remove to the rear.

As shown in Figure 10-12, a number of sliders 701 are distributed obliquely. Among the two adjacent sliders 701, the upper part of the slider 701 on the lower side is symmetrically hinged up and down with a T-shaped interconnecting rod 703. The inner surface of the slider 701 on the upper side is symmetrically provided with interconnecting chute 704 extending along its length direction. The cross section of the interconnecting chute 704 is T-shaped, and the upper end of the interconnecting rod 703 is embedded in In the connecting chute 703 and with the interconnecting chute 704 to form a sliding pair; among several sliding blocks 701, the uppermost sliding block 701 is fixedly connected with the track trolley 11, and the lowermost sliding block 701 is in the upper cleaning ring 201 The bottom of the outer ring track 601 or the top of the outer ring track 601 in the lower cleaning ring 202 are fixedly connected; the track trolley 11 moves along the circular slide rail 6, which can drive each slide block to be stored or unfolded, so that the staff can clean the brushes and Centralized maintenance or replacement of scrapers.

In this embodiment, the interconnecting chute 704 includes a circular arc segment 7041 and a straight line segment 7042, the circular arc segment 7041 is located on the lower side of the straight segment 7042, and the upper end surface of the slider 701 is symmetrically arranged with interconnecting The interconnecting rod installation groove 705 corresponding to the connecting chute 704, the lower end of the interconnecting rod 703 is accommodated in the interconnecting rod installation groove 705 and hinged with the interconnecting rod installation groove 705 through the pin shaft, when the rail trolley 11 pushes the uppermost When the slider 701 at the end slides down along the circular track 6, the interconnecting rod 703 slides from the arc segment 7041 of the interconnecting chute 704 to the end of the straight segment 7042, so that several sliders 701 are stacked in sequence , to realize that the sliders 701 of each section of the circular track 6 can be overlapped and accommodated in pairs; when the track trolley 11 slides upwards along the circular slide rail 6, the interconnecting rod 703 slides from the straight line section 7042 of the interconnecting chute 704 to the The end portion of the arc segment 7041 realizes that the slider assembly 7 is unfolded in an oblique shape; Hinged with the slider 701, the inner end of the connecting rod 706 is connected with a slider roller 707, and the two slider rollers 707 are respectively embedded in the outer ring track 601 and the inner ring track 602, and form a sliding pair, so as to be connected with the slider During the unfolding or storing process of the assembly 7, the sliders 701 can move according to the circular track 6; the lengths of the connecting rods 706 on several sliders 701 increase sequentially from the storage end to the deployment end.

As shown in Figures 13-15, in this embodiment, the rail trolley 11 is the prior art, and the rail trolley 11 mainly includes a car body 113, and the inner surface of the car body 113 (near the side of the circular track) is respectively installed with The trolley roller 114, the trolley roller 114 of the outside is embedded in the outer ring track 601, and the trolley roller 114 of the inner side is embedded in the inner ring track 602; The car body 113 is provided with a power mechanism for driving the rotation of the trolley roller around.

Described track trolley 11 comprises upper side track trolley 111 and lower side track trolley 112, is located in two upper side track trolleys 111 in the same plane, and the outer surface of two upper side track trolleys 111 is provided with a T-shaped groove respectively A1110, when the two upper track trolleys 111 are located at the upper end of the cleaning ring 2, two T-shaped grooves A1110 are symmetrically arranged, and a T-shaped bar A1111 is arranged in the T-shaped groove A1110 of the left upper side track car body, and the T-shaped bar The right end of A1111 is hinged with the T-shaped groove A1110, and a driving motor A is arranged in the car body of the upper left rail trolley, and the output shaft of the driving motor A is connected with the T-shaped bar A1111. When the circular track 6 moves to the upper end, the drive motor A drives the T-shaped bar A1111 to rotate and nests in the T-shaped groove A1110 of the upper right track trolley body to realize the docking of the two cars. Among the two lower rail trolleys 112 located in the same plane, a T-shaped groove B1120 is provided on the side of the lower rail trolley 112 away from the side of the slider 701, and a T-shaped bar B1121 is arranged in the T-shaped groove B1120. The lower end of the bar B1121 is hinged with the T-shaped groove B1120, and a drive motor B is arranged in the car body of the lower track trolley 112, and the output shaft of the drive motor B is connected with the T-shaped bar B1121 to drive the T-shaped bar B1121 to External rotation; the left and right ends of the upper part of the lower cleaning ring 202 are respectively provided with a limit slot, when the lower track trolley moves to the upper end of the lower cleaning ring, the drive motor B drives the T-shaped bar B to rotate and nest into the limit slot 204 Inside, the stop and fixation of the lower track trolleys are realized; when the two lower track trolleys move to the bottom of the lower cleaning ring, they rely on their own gravity to close together closely.

In this embodiment, the sliding assembly includes two slide rails 12 parallel to the axis of the flue body 1 and a sliding member that can move along the slide rails 12, and the two slide rails 12 are installed at the level of the flue body 1 The two ends of the diameter line; the slider includes a connecting plate 13 parallel to the slide rail 12, and the front and rear ends of the connecting plate 13 are respectively connected with a connecting plate that is embedded in the slide rail 12 and can move along the slide rail 12. The moving slide rail roller 14, the middle part of the connecting plate 13 is fixed with a supporting shaft 15 extending radially along the flue body 1, the supporting shaft 15 passes through the connecting sleeve 10, and the supporting shaft 15 and the connecting sleeve 10 are passed through the bearing Rotate connection, so that the cleaning ring 2 rotates around the support shaft 15. The support shaft 15 passes through the connecting sleeve 10 and is fixedly connected with a U-shaped spacer 16 with the opening facing downward. A fixed rod 17 is erected at the bottom of the left and right ends of the cross-shaped support frame 203 respectively, and the lower end of the rear side of the fixed rod 17 is fixedly connected with a horizontally arranged L-shaped stop rod 18. The long side of bar 18 fits with the vertical portion of U-shaped stop frame 16 rear sides; The vertical parts on the rear side of 16 fit together, so that the cleaning ring 2 cannot rotate counterclockwise around the support shaft 15, and the cleaning ring 2 remains vertical and moves to the rear side. At this time, the cleaning brush 8 and the scraper 9 remain in contact with the flue body. 1 is in contact with the inner wall, since the cleaning ring 2 is parallel to the vertical surface of the flue body 1, the contact surface between the cleaning brush, the scraper and the inner wall of the flue body can be maximized under the condition of normal smoke exhaust, and the cleaning dead angle in the flue can be reduced , improve the cleaning effect, and achieve the purpose of all-round dust removal in the flue. When the rope drive mechanism pulled the cleaning ring forward, the cleaning ring 2 rotated clockwise around the support shaft 15, and the vertical part on the front side of the U-shaped stop frame 16 limited the clockwise rotation of the cleaning ring 2, and the cleaning ring 2 rotated clockwise. Move to the front side in a tilted state. At this time, the upper and lower parts of the cleaning ring 2 are separated from the flue body 1 by a certain distance, so as to avoid bringing dust and oil back to the front end of the flue body due to the return movement of the work. When the cleaning ring returns to the front end of the flue body, the return stroke is completed, and the cleaning ring will return to its original state.

In this embodiment, the rope drive mechanism includes a front pulling motor set and a rear pulling motor set symmetrically arranged at the front and rear ends of the flue body 1. The front pull motor A19 and the front pull motor B20 on the right side, the motor shafts of the front pull motor A and the front pull motor B respectively pass through the front end edge of the flue body 1 and are fixedly connected with a front connecting ring, the front connection The ring is connected with the lower end of the fixed rod 17 through a front steel rope 21, and the two ends of the front steel rope are fixedly connected with the front connecting ring and the lower end of the fixed rod respectively. Winding and retracting of the front steel rope; the rear pulling motor unit includes a rear pulling motor A22 and a rear pulling motor B23 symmetrically arranged on the left and right sides of the rear end of the flue body 1, and the motor shaft of the rear pulling motor A22 A reducer 24 is connected, and the upper and lower output shafts of the reducer 24 respectively pass through the rear edge of the flue body 1 and are fixedly connected with a rear connecting ring A; the motor shaft of the rear pulling motor B23 passes through the flue The rear end edge of the body 1 is fixedly connected with a rear connecting ring B, the rear connecting ring B, the rear connecting ring A on the lower output shaft 242 of the reducer and the lower end of the fixed rod 17 are respectively connected by a rear steel rope 25, and after passing through the rear The positive and negative rotation of the pulling motor A and the rear pulling motor B can realize the winding and retracting of the rear steel rope. When the front pull motor A and the front pull motor B wind and tighten the front steel rope, the back pull motor A and the back pull motor B wind and loosen the rear steel rope, and the cleaning ring can be pulled to move from back to front; the front pull motor A and the front pull motor When the pulling motor B winds and loosens the front steel rope, the rear pulling motor A and the rear pulling motor B wind and tighten the rear steel rope, and the cleaning ring can be pulled to move from front to back.

In this embodiment, the inner wall of the flue body 1 is also provided with a photoelectric detection assembly for detecting the thickness of the ash accumulation, and the photoelectric detection assembly includes several photoelectric sensors 26 installed side by side on the bottom of the inner wall of the flue body 1 along the axial direction. , the top of the inner wall of the flue body is equipped with a light source corresponding to several photoelectric sensors (not shown in the figure), and the photoelectric sensor 26 communicates with the front pull motor A, the front pull motor B, and the back pull motor A through the main control unit. And the electrical connection of the pull-back motor B. When there is a lot of dust on the inner wall of the flue body, the soot will cover or partially cover the photoelectric sensor. If the photoelectric sensor cannot receive the light signal or the light signal is weak, it means that it needs to be cleaned here. After sending a signal, the main control unit drives the front pull motor A, the front pull motor B, the back pull motor A and the back pull motor B through the motor drive module to realize automatic dust removal.

The main control unit may be a single-chip microcomputer, and the main control unit is electrically connected with the high-pressure air pump and the oil pump respectively.

In this embodiment, the photoelectric sensors 26 are arranged side by side along the axial direction of the flue body. If the adjacently arranged photoelectric sensors receive signals in sequence and are continuously blocked in sequence, it means that the cleaning ring has swept The position of the above-mentioned adjacently arranged photoelectric sensors can be determined based on the data, and the position of the cleaning ring in the flue body can be judged.

In this embodiment, the left and right sides of the outer bottom of the flue body 1 are respectively equipped with capacitive sensors 27 distributed side by side in the axial direction, and the capacitive sensors 27 on the left and right sides correspond to each other to detect the dust accumulation on the inner wall of the flue body The thickness and capacitive sensors are electrically connected with the main control unit. The capacitive sensor can assist the photoelectric sensor to judge the thickness of dust accumulation at this time, so as to estimate the number of times of cleaning.

The cleaning brush 8 is a fiber brush, and the scraper 9 is made of a material with certain toughness and hardness.

In this embodiment, the fuel injection pipe 3 is provided with a fuel injection pipe and an air injection pipe, a number of fuel injection nozzles 5 are connected to the fuel injection pipe, and a number of air injection nozzles 4 are connected to the air injection pipe; the oil and gas supply device includes a high-pressure air pump 28 , an oil pump 29 and a three-way pipe connector 30, the high-pressure air pump 28 is arranged on the upper side of the rear pull motor A22, and the air outlet of the high-pressure air pump 28 is connected with an air pipe 31; the oil pump 29 is installed on the bottom of the flue body 1 , the oil outlet of the oil pump 29 is connected with the oil delivery pipe A32; the three-way pipe connector 30 is arranged on the top of the speed reducer 24, and the oil delivery pipe A32 and the gas delivery pipe 31 extend from the two side ports of the three-way pipe connector 30 respectively. The middle port stretches out, and the oil delivery pipe A32 and the air delivery pipe 31 are respectively connected with the fuel injection pipe and the air injection pipe after passing through the tee pipe connector 30. The oil and gas delivery sleeve 33 on the outside of the gas pipe 31 , the oil and gas delivery sleeve 33 is connected with the oil and gas nozzle 3 after being wound with the rear connecting ring A on the output shaft 241 on the reducer. By controlling the oil and gas supply device, the cleaning ring can be cleaned by air injection, oil injection or a combination of air injection and oil injection, which is convenient to use and has multiple functions.

In this embodiment, the rear port of the flue body 1 is connected to the dust removal device 34 (existing dust removal device), the bottom of the rear end of the flue body 1 is provided with an arc-shaped discharge port, and the lower end of the discharge port is connected to There is a soot oil hopper 35 for collecting soot and cleaning oil. The soot oil hopper 35 is provided with a coarse filter 36 and a fine filter 37 sequentially from top to bottom. As shown in Figure 16, the scraper 9 seals the flue body 1 The soot and cleaning oil on the inner wall are scraped into the soot oil hopper 35, the coarse filter 36 and the fine filter 37 separate the cleaned oil from the soot residue, the coarse filter can filter larger particles, and the finer The filter screen can filter particles with smaller particle size, and the filtered clean oil is stored at the bottom of the soot oil hopper, and the bottom of the soot oil hopper 35 is connected to the clean oil filter 39 installed at the bottom of the flue body 1 through an oil delivery pipe B38 The output port of the clean oil filter 39 is connected to the oil inlet port of the oil pump 29 through an oil delivery pipe C40, that is, the filtered clean oil is transported to the clean oil filter through the oil delivery pipe B for further filtration, and the oil filtered by the clean filter The oil is delivered to the oil pump through the oil delivery pipe C for recycling.

Both the coarse filter screen and the fine filter screen are detachably connected with the soot oil hopper.

The front pull motor A, the front pull motor B, the back pull motor A and the back pull motor B are all installed on the outer wall of the flue body through the motor bracket 41; the high-pressure air pump is arranged on the back pull motor A through a mounting bracket. above.

In this embodiment, it can be used in medium-sized and large-scale industrial coal-fired flues, and the diameter of the flue is more than 6m to 8m. It is mainly used for cleaning the accumulated dust and ash in the flue.

The specific implementation process: when there is a lot of dust on the inner wall of the flue body, the soot will cover or partially cover the photoelectric sensor. The brush first comes into contact with the dust accumulation on the inner wall of the flue body to loosen the dust accumulation. At the same time, the high-pressure air pump can blow air towards the inner wall of the flue body through the air nozzle to improve the dust removal effect; while the front side of the cleaning ring The scraper scrapes the ash accumulated on the inner wall of the flue body that is difficult to sweep or blow off to the rear. After working for many times, the capacitive sensor and photoelectric sensor still judge that there is some unremoved dust accumulation. At this time, the oil-gas switch is switched, the oil pump operates, and intermittently sprays cleaning oil on the inner wall of the flue body through the oil nozzle. It can assist the cleaning brush and scraper to clean the accumulated dust, and the scraper can also play the role of scraping oil. At the same time, in order to ensure that the internal pipe wall of the flue will not be damaged by repeated physical cleaning under high temperature and high pressure, the system will control the cleaning ring to inject oil from time to time during work, and use clean oil to clean the inner wall of the flue body and the cleaning ring. Self-cleaning and surface maintenance by itself. After the cleaning ring has been used for a period of time, by starting the movement of the track trolley on each segment of the circular slide rail and retracting the sliders, the sliders on each segment of the circular rail are stacked one after another. After each slider, it is convenient for maintenance personnel to clean or replace the cleaning brushes or scrapers on each slider. After the maintenance is completed, the track trolley on each section of the circular track moves along the circular track, driving the sliders to unfold in turn.

The above descriptions are only preferred embodiments of the present utility model, and all equivalent changes and modifications made according to the patent scope of the present utility model shall fall within the scope of the present utility model.

Claims (9)

1. An automatic flue cleaning device, characterized in that: it comprises a cylindrical flue body, a cleaning ring, a sliding assembly, a rope drive mechanism and an oil and gas supply device, and the cleaning ring is coaxially arranged inside the flue body, An oil-air nozzle connected to the oil-gas supply device is fixed on the outer circumference of the cleaning ring, and several air nozzles and oil nozzles are evenly distributed in a ring on the outer surface of the oil-gas nozzle; The rear side is symmetrically provided with an annular track, and a slider assembly that can be deployed along the annular track is slidably connected in the annular track, and the top of the slider in the slider assembly is provided with a cleaning brush or a scraper; the sliding assembly It is symmetrically arranged on the left and right ends of the inner wall of the flue body, and the sliding part on the sliding assembly is hinged with the cleaning ring; the rope drive mechanism is symmetrically arranged on the left and right sides of the cleaning ring to pull the cleaning ring along the Axial sliding of the flue body. 2. The flue automatic dust cleaning device according to claim 1, characterized in that: the cleaning ring includes a cleaning ring body and a cross-shaped support frame erected inside the cleaning ring body, and the cleaning ring body consists of a half ring It is composed of an upper cleaning ring and a lower cleaning ring, the left and right ends of the lower part of the upper cleaning ring and the upper part of the lower cleaning ring are fixedly connected through a connecting sleeve respectively, and the axis of the connecting sleeve is arranged horizontally and The axes of the flue body are perpendicular to each other. 3. The flue automatic dust cleaning device according to claim 2, characterized in that: the circular track is divided into four sections by a cross-shaped support frame, and each section of the circular track includes an inner ring track with a T-shaped cross section and the outer ring track, each segment of the ring track is provided with a track trolley and a slider assembly that can move along the inner and outer ring tracks, and the top of the track trolley is provided with a mounting groove for installing a cleaning brush or a scraper A: The slider assembly includes several sliders distributed along the circular track, the top of the slider is provided with a mounting groove B for installing a cleaning brush or scraper, and the top of the slider located at the rear side of the cleaning ring is installed Sweeping brush, the top of the slider on the front side of the cleaning ring is equipped with a scraper; several sliders are distributed in an oblique line, and among the two adjacent sliders, the upper part of the slider on the lower side is hinged symmetrically with a T shape. The inner surface of the slider on the upper side is symmetrically provided with an interconnection chute extending along its length direction. The cross-section of the interconnection chute is T-shaped, and the upper end of the interconnection rod is embedded In the interconnection chute and form a sliding pair with the interconnection chute; among several sliders, the uppermost slider is fixedly connected with the track trolley, and the lowermost slider is connected with the lower part of the outer ring track in the upper cleaning ring Or the upper part of the outer ring track in the lower cleaning ring is fixedly connected. 4. The flue automatic dust cleaning device according to claim 3, characterized in that: the interconnected chute includes a circular arc segment and a straight line segment, the circular arc segment is located on the lower side of the straight line segment, and the slider The upper end surface of the upper end is symmetrically provided with interconnecting rod installation grooves corresponding to the interconnection chute. When the trolley pushes the uppermost slider to slide down along the circular track, the interconnecting rod slides from the arc segment of the interconnecting chute to the end of the straight line, so that several sliders are stacked in sequence; A connecting rod is arranged symmetrically up and down on the inner surface of the block, the outer end of the connecting rod is hinged with the slider through a hinge, the inner end of the connecting rod is connected with a slider roller, and the two slider rollers are respectively embedded in the outer The ring track and the inner ring track form a sliding pair; the lengths of the connecting rods on several sliders gradually increase from the receiving end to the unfolding end. 5. The flue automatic ash cleaning device according to claim 2, characterized in that: the sliding assembly includes two slide rails parallel to the axis of the flue body, and a sliding piece that can move along the slide rails, Two sliding rails are installed at both ends of the horizontal diameter line of the flue body; the sliding member includes a connecting plate parallel to the sliding rails, and the front and rear ends of the connecting plate are respectively connected with The slide rail roller can move along the slide rail, and the middle part of the connection plate is fixed with a support shaft extending radially along the flue body. The support shaft passes through the connection sleeve, and the support shaft and the connection sleeve are rotatably connected by bearings. The supporting shaft passes through the end of the connecting sleeve and is fixedly connected with a U-shaped spacer with the opening facing downwards. The lower parts of the left and right ends of the frame are respectively vertically provided with a fixed rod, and the lower end of the rear side of the fixed rod is fixedly connected with a horizontally arranged L-shaped stop rod, and the long side of the L-shaped stop rod and the U-shaped stop Fit the vertical part on the rear side of the rack. 6. The flue automatic dust cleaning device according to claim 5, characterized in that: the rope drive mechanism includes a front pulling motor set and a rear pulling motor set symmetrically arranged at the front and rear ends of the flue body, and the front pull motor The pulling motor unit includes a front pulling motor A and a front pulling motor B symmetrically arranged on the left and right sides of the front end of the flue body, and the motor shafts of the front pulling motor A and the front pulling motor B pass through the front edge of the flue body respectively And fixedly connected with a front connecting ring, the front connecting ring is connected with the lower end of the fixed rod via a front steel rope; the rear pulling motor unit includes rear pulling motors A and A that are symmetrically arranged on the left and right sides of the rear end of the flue Back-pull motor B, the motor shaft of said back-pull motor A is connected with a reducer, and the upper and lower output shafts of said reducer respectively pass through the rear edge of the flue body and are fixedly connected with a rear connection ring A; said The motor shaft of the rear pull motor B passes through the rear edge of the flue body and is fixedly connected with a rear connection ring B. The rear connection ring B, the rear connection ring A on the lower output shaft of the reducer and the lower end of the fixed rod are respectively passed through Rear steel rope connection. 7. The flue automatic ash cleaning device according to claim 6, characterized in that: the oil and gas nozzles are provided with fuel injection pipes and air injection pipes, a number of fuel injection nozzles are connected with the fuel injection pipes, and a number of air injection nozzles are connected with the air injection pipes. Connected; the oil and gas supply device includes a high-pressure air pump, an oil pump and a tee pipe connector, the high-pressure air pump is arranged on the upper side of the pull-back motor A, and the air outlet of the high-pressure air pump is connected with an air pipe; the oil pump is installed in the flue At the bottom of the body, the oil outlet of the oil pump is connected to the oil delivery pipe A; the tee pipe connector is set on the top of the reducer, and the oil delivery pipe A and the gas delivery pipe respectively extend from the two side ports of the tee pipe connector and from the middle port. Stretch out, the oil delivery pipe A and the gas delivery pipe pass through the three-way pipe connector and are connected to the fuel injection pipe and the air injection pipe respectively. Sleeve, the oil and gas delivery sleeve is connected with the oil and gas nozzle after being wound with the rear connecting ring A on the output shaft on the reducer. 8. The flue automatic dust removal device according to claim 7, characterized in that: the rear port of the flue body is connected to dust removal equipment, and the bottom of the rear end of the flue body is provided with an arc-shaped discharge port, the discharge The lower end of the port is connected with a soot oil hopper for collecting soot and cleaning oil. The soot oil hopper is provided with a coarse filter and a fine filter in turn from top to bottom. The clean oil filter at the bottom of the road body is connected, and the output port of the clean oil filter is connected with the oil inlet of the oil pump through an oil delivery pipe C. 9. The flue automatic dust cleaning device according to claim 1 or 6, characterized in that: the inner wall of the flue body is also provided with a photoelectric detection assembly for detecting the thickness of the ash accumulation, and the photoelectric detection assembly includes several The photoelectric sensors are installed side by side on the bottom of the inner wall of the flue body along the axial direction, and the top of the inner wall of the flue body is installed with light sources corresponding to several photoelectric sensors one by one. B. The pull-back motor A and the pull-back motor B are electrically connected.