Blockage removing device for flue intersection of waste heat boiler

Abstract

The invention discloses a blockage removing device for the intersection of waste heat boiler flues, and relates to the boiler flue technology, the blockage removing device comprises a first vertical flue, a horizontal flue and a second vertical flue which are connected in sequence, the bottom wall of the horizontal flue is obliquely arranged, and the joint of the bottom wall of the horizontal flue and the second vertical flue is downwards inclined; the invention provides a blockage removing device for the flue junction of a waste heat boiler, which comprises a first vertical flue, a horizontal flue and a second vertical flue which are sequentially connected, the bottom wall of the horizontal flue is obliquely arranged, and the junction of the bottom wall of the horizontal flue and the second vertical flue is downwards inclined. When coke blocks and soot fall on the obliquely arranged bottom wall, the coke blocks and the soot can slide into the second vertical flue under the gravity of the coke blocks and the soot, the coke blocks and the soot at the position can be directly conveyed and carried away during normal production, the risk of forming large coke blocks is avoided, concentrated cleaning after shutdown is not needed, and the working efficiency of the waste heat boiler is ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of boiler flue, in particular to a clogging removal device for the intersection of the flue of a waste heat boiler. BACKGROUND

[0002] The waste heat boiler is a key equipment for recovering high-temperature flue gas waste heat in the industrial field, and is widely used in the metallurgical, chemical, and power industries. The flue of the waste heat boiler is a key component connecting the heat source and the boiler body in the entire system, mainly bearing three core functions of flue gas transmission, energy exchange, and system regulation. The design and running state of the flue directly affect the waste heat recovery efficiency and equipment safety. The flue system of the existing waste heat boiler is usually composed of an ascending flue, a horizontal flue, and a descending flue in sequence, forming a "ladder type" or "Z type" three-dimensional layout.

[0003] For example, the patent application with the application publication number CN116045298A and the application publication date of May 2, 2023, entitled "Boiler cooling and flue ash removal system", the boiler cooling and flue ash removal system includes a boiler and a flue gas recirculation structure, the boiler is connected with a flue, the flue includes a horizontal flue and a vertical flue, one end of the horizontal flue is connected with the top of the boiler, the other end of the horizontal flue is connected with the vertical flue, a economizer and a denitration device are sequentially arranged on the vertical flue, the flue gas recirculation structure includes a flue gas collecting box, a recirculation pipeline, a first flue gas pipeline and a second flue gas pipeline, the flue gas collecting box is connected with the vertical flue between the economizer and the denitration device in communication through the recirculation flue gas pipeline, one end of the first flue gas pipeline is connected with the flue gas collecting box, the other end of the first flue gas pipeline is connected with the furnace of the boiler in communication, one end of the second flue gas pipeline is connected with the flue gas collecting box, the other end of the second flue gas pipeline is connected with the horizontal flue in communication. The boiler cooling and flue ash removal system provided by the present application has the advantages of small influence on the boiler thermal efficiency and good unit safety.

[0004] The existing technology has the following disadvantages: this structure composed of an ascending flue, a horizontal flue, and a descending flue in sequence is prone to accumulate a large amount of coke and ash at the intersection of the descending flue and the horizontal flue, and the traditional cleaning and conveying mechanism needs to be stopped for regular centralized cleaning, which not only increases the cleaning workload, but also affects the working efficiency of the waste heat boiler. SUMMARY

[0005] The purpose of the present application is to provide a clogging removal device for the intersection of the flue of a waste heat boiler to solve the above-mentioned deficiencies in the prior art.

[0006] In order to achieve the above-mentioned purpose, the present application provides the following technical solutions: A kind of for waste heat boiler flue intersection place's blockage removal device, including first vertical flue, horizontal flue and second vertical flue connected in turn, the bottom wall of the horizontal flue is inclinedly arranged, and the bottom wall of the horizontal flue is connected with the second vertical flue downwardly inclined.

[0007] The above-mentioned one for waste heat boiler flue intersection place's blockage removal device, the horizontal flue is communicated between the top end of first vertical flue and second vertical flue, and the bottom of the second vertical flue is provided with hopper for collecting and outputting coke block and soot.

[0008] The above-mentioned one for waste heat boiler flue intersection place's blockage removal device, the junction of first vertical flue and horizontal flue is defined as intersection place, and the first vertical flue is provided with turbulence component, and the turbulence component is located above the intersection place.

[0009] The above-mentioned one for waste heat boiler flue intersection place's blockage removal device, the turbulence component includes annular limiting slot formed on the inner wall of first vertical flue, and turbulence plate is slidably installed in the annular limiting slot, and first torsional spring is connected between the turbulence plate and the inner wall of first vertical flue, and the first torsional spring is used to maintain the initial state of the turbulence plate.

[0010] The above-mentioned one for waste heat boiler flue intersection place's blockage removal device, the lower end of the turbulence plate is arc surface.

[0011] The above-mentioned one for waste heat boiler flue intersection place's blockage removal device, the lower end of the turbulence plate is attached to the intersection place.

[0012] The above-mentioned one for waste heat boiler flue intersection place's blockage removal device, the turbulence plate is composed of connecting part and turbulence part, the turbulence part is installed on the upper end of the connecting part, and the connecting part is slidably arranged in the annular limiting slot.

[0013] The above-mentioned one for waste heat boiler flue intersection place's blockage removal device, the through hole is formed in the connecting part, the driving shaft is rotatably arranged in the through hole, the two ends of the driving shaft are rotatably arranged in the side wall of the first vertical flue, the mounting groove is formed in the inner wall of the through hole, the two stop blocks are oppositely arranged in the mounting groove, the driving block is formed on the driving shaft, the driving block and the stop block are correspondingly arranged, when the driving block rotates a certain angle, the driving block starts to contact with the stop block, the driving motor is installed on the outer side wall of the first vertical flue, and the output shaft of the driving motor is connected with the driving shaft.

[0014] The above-mentioned one for waste heat boiler flue intersection place's blockage removal device, the included angle between the stop block and the horizontal plane is 45 degrees.

[0015] The driving block is vertically arranged in the initial state.

[0016] In the above technical solution, the application provides a clogging removal device for the flue intersection of a waste heat boiler, comprising a first vertical flue, a horizontal flue and a second vertical flue connected in sequence, wherein the bottom wall of the horizontal flue is inclined, and the connection between the bottom wall of the horizontal flue and the second vertical flue is inclined downward. In this way, when the coke and the ash fall on the inclined bottom wall, the coke and the ash will slide into the second vertical flue under the action of gravity, and the coke and the ash at this position are directly transported and removed during normal production, without the risk of forming large coke blocks and the need for centralized cleaning after shutdown, thereby ensuring the working efficiency of the waste heat boiler. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments described in the present application, and other drawings can also be obtained by those skilled in the art based on these drawings.

[0018] Figure 1 The structural schematic diagram of the clogging removal device for the flue intersection of a waste heat boiler is provided for an embodiment of the present application.

[0019] Figure 2 The partial sectional view of the clogging removal device for the flue intersection of a waste heat boiler is provided for an embodiment of the present application.

[0020] Figure 3 The partial internal three-dimensional structural schematic diagram of the clogging removal device for the flue intersection of a waste heat boiler is provided for an embodiment of the present application.

[0021] Figure 4 The partial internal three-dimensional structural schematic diagram of the clogging removal device for the flue intersection of a waste heat boiler from a first perspective is provided for another embodiment of the present application.

[0022] Figure 5 The partial internal three-dimensional structural schematic diagram of the clogging removal device for the flue intersection of a waste heat boiler from a second perspective is provided for another embodiment of the present application.

[0023] Figure 6 The sectional view of the spoiler assembly is provided for another embodiment of the present application.

[0024] Figure 7 The three-dimensional structural schematic diagram of the spoiler assembly is provided for another embodiment of the present application.

[0025] Figure 8The present invention is a schematic diagram of the three-dimensional structure of a spoiler assembly provided in another embodiment.

[0026] Figure 9 For the present invention Figure 8 A local enlarged view of point Y.

[0027] Figure 10 A cross-sectional view of a spoiler assembly provided in another embodiment of the present invention.

[0028] Figure 11 For the present invention Figure 10 A partial enlarged view of point X.

[0029] Figure 12 A cross-sectional view of a spoiler assembly provided in another embodiment of the present invention from another perspective (perpendicular to the upper end surface of the sliding rack).

[0030] Figure 13 A partial structural diagram of a blockage clearing device for a waste heat boiler flue intersection provided in another embodiment of the present invention.

[0031] Figure 14 This is a schematic diagram of the working state of a partition plate in different working states provided by another embodiment of the present invention.

[0032] Description of reference numerals: 1. First vertical flue; 2. Horizontal flue; 3. Second vertical flue; 31. Ash hopper; 4. Spoiler assembly; 41. Annular limit groove; 42. Spoiler; 421. Connecting portion; 422. Spoiler; 423. Through hole; 424. Drive shaft; 425. Mounting groove; 426. Stop block; 427. Drive block; 428. Drive motor; 43. Rotating shaft; 44. Spacer; 45. Mounting cavity; 46. Drive gear; 47. Sliding rack; 471. Trapezoidal extrusion block; 472. Limit spring; 473. Bump. DETAILED DESCRIPTION

[0033] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0034] like Figures 1-14 As shown, an embodiment of the present invention provides a blockage clearing device for the intersection of waste heat boiler flues, comprising a first vertical flue 1, a horizontal flue 2, and a second vertical flue 3 connected in sequence, wherein the bottom wall of the horizontal flue 2 is inclined, and the connection between the bottom wall of the horizontal flue 2 and the second vertical flue 3 is inclined downward.

[0035] Specifically in the embodiment, the lower end of the first vertical flue 1 is connected with the waste heat boiler, flue gas enters from the first vertical flue 1, the horizontal flue 2 is connected between the top of the first vertical flue 1 and the second vertical flue 3, and the rear end of the second vertical flue 3 is connected with a heat exchange structure such as a heat exchanger. The main purpose of arranging the first vertical flue 1, the horizontal flue 2 and the second vertical flue 3 is to guide flue gas and improve heat exchange efficiency. Preferably, the cross sections of the first vertical flue 1 and the second vertical flue 3 are square structures, the conveying direction of flue gas is from the first vertical flue 1 to the horizontal flue 2 and then to the second vertical flue 3, and then output; the top wall of the horizontal flue 2 is still a horizontal end face, but the bottom wall of the horizontal flue 2 is arranged to be inclined (defined as a discharging bottom wall), the angle (with the horizontal plane) of the inclined bottom wall of the horizontal flue 2 is preferably 60 degrees, and the end of the bottom wall of the horizontal flue 2 close to the second vertical flue 3 is inclined downward. The discharging bottom wall is a square plate structure. In this way, when coke blocks and ash fall on the inclined bottom wall, the coke blocks and ash will slide into the second vertical flue 3 under the action of their own gravity (unstable flow of flue gas will also drive the coke blocks and ash to slide into the second vertical flue 3), so that the accumulation of a large amount of coke blocks and ash at the intersection of the horizontal flue 2 and the second vertical flue 3 can be avoided, and the risk of forming large coke blocks can be avoided. In addition, the technical solution only needs to replace the horizontal flue 2, without the need to make large-scale changes to the existing flue. While the production is carried out, the coke blocks and ash of the discharging bottom wall can be directly conveyed and transported away, without the need to stop the machine for centralized cleaning, so that the working efficiency of the waste heat boiler is ensured.

[0036] In another embodiment provided by the application, the horizontal flue 2 is connected between the top ends of the first vertical flue 1 and the second vertical flue 3, the bottom of the second vertical flue 3 is provided with a hopper 31 for collecting and outputting coke blocks and ash, and the hopper 31 is a funnel-shaped device mainly used for collecting coke blocks and ash falling from the second vertical flue 3. In order to avoid the accumulation of coke blocks and ash in the hopper 31, the coke blocks and ash collected in the hopper 31 can be cleaned regularly.

[0037] Most of the time, the flue gas generally presents a relatively stable laminar or turbulent flow state when flowing in the flue, and the specific state depends on the flue gas flow rate, flue size and shape and other factors. In the laminar state, the flue gas flows smoothly, and the flow lines are parallel; while in the turbulent state, the flue gas flows more turbulently, and there are a large number of eddies and vortices. However, the flue gas in the turbulent state is also difficult to make the adhered coke and soot on the lower discharge bottom wall slide down, and for this reason, the embodiment provides a further solution, which aims to use the turbulent flue gas to self-clean the adhered coke and soot, the connection between the first vertical flue 1 and the horizontal flue 2 is defined as the intersection, and the first vertical flue is provided with a turbulence component 4, and the turbulence component 4 is located above the intersection, when the flue gas appears turbulent, the turbulence component 4 can strengthen the turbulence of the flue gas, so that the flue gas changes in speed and direction, and in this way, it is helpful for the coke and soot adhered in the lower discharge bottom wall and the second vertical flue 3 to fall off.

[0038] In still another embodiment of the present application, the turbulence assembly 4 comprises an annular limiting groove 41 formed on the inner wall of the first vertical flue 1, the annular limiting groove 41 is not a complete annular groove, the annular limiting groove 41 has a gap, the gap of the annular limiting groove 41 corresponds to the intersection, the angle of the annular limiting groove 41 is preferably 135 degrees, preferably, the center of the annular limiting groove 41 corresponds to the intersection, a spoiler 42 is slidingly installed in the annular limiting groove 41 (it is noted that the spoiler 42 is installed in the first vertical flue 1 through the annular limiting groove 41 at this time), the spoiler 42 is preferably a square plate structure, the spoiler 42 slides in the annular limiting groove 41, that is, the overall movement track of the spoiler 42 is rotating with the center of the annular limiting groove 41, a first torsional spring (not shown in the figure) is connected between the spoiler 42 and the inner wall of the first vertical flue 1, the first torsional spring is used to maintain the initial state of the spoiler 42, the initial state of the spoiler 42 can be vertically arranged or inclined arranged, the main function of the spoiler 42 is to change the flow rate and flow direction of the flue gas, so that the flue gas can act on the horizontal flue 2 and the second vertical flue 3 and perform self-cleaning; the lower end of the spoiler 42 is arc-shaped, which facilitates the rotation of the spoiler 42 with the center of the annular limiting groove 41 as the rotation center; the lower end of the spoiler 42 is attached to the intersection, so that the flue gas can only flow through the space between the top of the spoiler 42 and the horizontal flue 2, when the spoiler 42 rotates, the bottom of the spoiler 42 is attached to the intersection and moves; when the flue gas flows stably, the spoiler 42 slides a certain distance in the annular limiting groove 41 under the pushing of the flue gas and is inclined to a certain degree, at this time, the spoiler 42 is in a stable state, and the first torsional spring is also in a stable state of compression, and the spoiler 42 does not cause severe disturbance to the flow of flue gas; when the flue gas is in a turbulent state, the spoiler 42 reciprocatingly slides in the annular limiting groove 41 under the elastic action of the first torsional spring, so that the flow direction of the flue gas also changes disorderly, which helps the coke pieces and soot attached to the bottom wall of the feeder and the second vertical flue 3 to fall off by themselves.

[0039] When the flue gas flows in the flue, the coke and the fly ash in the flue gas are easy to settle in the corner due to the low flow rate. In the embodiment, the corner is defined as the first corner on the side of the upper end of the first vertical flue 1 away from the second vertical flue 3, and the second corner on the side of the upper end of the second vertical flue 3 away from the first vertical flue 1. To this end, a further embodiment is provided in the embodiment to clean the two corners by directing the spoiler 42. Further, the spoiler 42 is composed of a connecting part 421 and a spoiler part 422. The spoiler part 422 is installed at the upper end of the connecting part 421. The connecting part 421 is a plate-shaped structure with an arc-shaped bottom. The connecting part 421 is slidingly arranged in the annular limiting groove 41. In the embodiment, the spoiler part 422 is preferably a square plate. A through hole 423 is formed in the connecting part 421. A drive shaft 424 is rotatably arranged in the through hole 423. The two ends of the drive shaft 424 are rotatably arranged in the side wall of the first vertical flue 1. An installation groove 425 is formed in the inner side wall of the through hole 423. The installation groove 425 is an annular groove. Two stop blocks 426 are oppositely arranged in the installation groove 425. The stop blocks 426 are square blocks. Preferably, the included angle between the two stop blocks 426 and the horizontal plane is 45 degrees. A drive block 427 is formed on the drive shaft 424. The drive block 427 is correspondingly arranged with the stop blocks 426. In the initial state, the drive block 427 is vertically arranged. In the initial state, the included angle between the drive block 427 and the two stop blocks 426 is the same, which is preferably 45 degrees. When the drive block 427 is rotated by a certain angle, the drive block 427 starts to contact the stop blocks 426. That is, before the drive block 427 contacts the stop blocks 426, the drive block 427 can swing freely within the range between the two stop blocks 426. This is to enable the spoiler 42 to reciprocate to a certain extent. A drive motor 428 is installed on the outer side wall of the first vertical flue 1. The output shaft of the drive motor 428 is connected with the drive shaft 424.

[0040] In the above embodiment, the spoiler 42 has three working strokes, namely, a stable flow stroke, a free swing stroke and a directional cleaning stroke; in the stable flow stroke, the flue gas flows stably, the spoiler 42 slides in the annular limiting groove 41 for a certain distance and drives the stop block 426 to slide synchronously, at this time, the spoiler 42 appears a certain degree of inclination, and the spoiler 42 does not appear violent disturbance to the flow of flue gas; in the free swing stroke, the flue gas is in a turbulent state, under the elastic action of the first torsional spring, the spoiler 42 reciprocatingly slides in the annular limiting groove 41, at this time, the stop block 426 also reciprocatingly moves synchronously, and the stop block 426 does not contact with the driving block 427, thus, an environment in which the spoiler 42 can freely swing is provided; in the directional cleaning stroke, when directional cleaning of two corners is needed, the driving motor 428 drives the driving shaft 424 to rotate, the driving block 427 slides in the installation groove 425 and contacts with one of the stop blocks 426 (when the first corner needs to be cleaned, the driving block 427 contacts with the stop block 426 close to the first vertical flue 1; when the second corner needs to be cleaned, the driving block 427 contacts with the stop block 426 close to the second vertical flue 3), at this time, the stop block 426 is synchronously driven and drives the spoiler to rotate for a certain angle, so that the spoiler is aligned with the corresponding corner, at this time, taking the first corner as an example, it needs to be noted that the distance between the end of the spoiler and the first vertical flue 1 is reduced when the flue gas passes through the spoiler, thus, the sectional area of the flue gas flow passage is reduced, the speed of the flue gas increases when the flue gas flows through the spoiler, thus, the flue gas blows to the first corner along the spoiler 42 after the speed increases, and the coke and soot attached to the first corner are cleaned; obviously, in the embodiment, the spoiler 42 has three functions, one is that when the flue gas appears turbulent flow, the flow direction of the flue gas is also changed in disorder by reciprocating swing, the second is that the flowing flue gas is guided to blow to the first corner or the second corner, and the third is that the area of the flue gas flow passage is reduced, so that the speed of the flue gas blowing to the first corner or the second corner increases, and the impact force on the coke and soot on the first corner or the second corner is increased.

[0041] Obviously, in the above embodiment, the spoiler 42 does not need to be in working state at all times, therefore, the spoiler 42 can be rotated by a certain angle and attached to the bottom wall of the discharging bottom, the process can be driven by the driving motor 428, when the working of the spoiler 42 needs to be stopped, the driving shaft 424 is rotated by the driving motor 428, so as to drive the driving block 427 to contact the stop block 426 close to the second vertical flue 3, the driving shaft 424 continues to rotate, so as to drive the spoiler 42 to rotate into the second vertical flue 3, when the spoiler 42 is attached to the bottom wall of the discharging bottom, the working of the driving motor 428 can be stopped and the position of the spoiler 42 can be locked, the position of the spoiler 42 can be realized by the locking mechanism in the prior art, which is not described in detail, in this way, the spoiler 42 is attached to the bottom wall of the discharging bottom, which does not affect the circulation of the flue gas in the whole flue.

[0042] Further, when cleaning is needed, the spoiler 42 is rotated to the vertical state by the driving motor 428, and then the spoiler 42 enters the stable flow stroke or the free swing stroke, however, the spoiler 422 is a plate-shaped structure with a certain length, and needs to stand in the flue for a long time during working, which obviously hinders the circulation of the flue gas in the flue and greatly reduces the flue gas flow amount (the cleaning of the first corner and the second corner is temporary and acceptable), therefore, the present embodiment provides a further technical solution to solve the above technical problem, in the present embodiment, the spoiler 422 is no longer a complete plate-shaped structure, the spoiler 422 includes a plurality of rotating shafts 43 rotatably installed on the connecting portion 421, the rotating shafts 43 and the connecting portion 421 are connected with a second torsional spring (not shown in the figure), the upper end of the rotating shaft 43 is fixed with a spacing plate 44, under the elastic action of the second torsional spring, the spacing plate 44 maintains a certain rotation angle, preferably 30 degrees, the spacing plate 44 is also a square plate-shaped structure, when the spacing plate 44 maintains a certain rotation angle, the spacing plates 44 have a certain spacing therebetween, which is used for passing the flue gas, in this way, when the flue gas contacts the spacing plate 44, the spacing plate 44 is pushed to rotate to a certain extent with the rotating shaft 43 as the center, and the spoiler 42 is also rotated by a certain angle, part of the flue gas will flow through the spacing plates 44, in this way, the spoiler 42 reduces the hindrance to the circulation of the flue gas, at the same time, the swing of the spacing plate 44 also changes the flow direction of the flue gas, which is more helpful for the self-falling of the coke block and the soot.

[0043] Further, referring to Figures 10-14, if the spacing plate 44 is rotatable, obviously, during the directional cleaning stroke, the flue gas will still pass between the spacing plates 44, at this time, the flue gas is difficult to blow along the spacing plate 44 to the first corner and the second corner, the change of the flow velocity of the flue gas is small, and the limited impact on the coke and ash on the first corner or the second corner cannot be formed. Therefore, the embodiment provides a further scheme, the width of the spacing plate 44 is not less than the gap between two adjacent spacing plates 44, that is, when the spacing plate 44 is rotated to a certain angle, the two adjacent spacing plates 44 can be sealed or overlapped to block the flow of the gas. The spacing plates 44 are uniformly arranged, the mounting cavity 45 is arranged in the connecting portion 421, the mounting cavity 45 is a square structure, the lower end of the rotating shaft 43 extends into the mounting cavity 45, the lower end of the rotating shaft 43 is fixedly connected with the driving gear 46, the sliding rack 47 is also slidably arranged in the mounting cavity 45, one end of the sliding rack 47 passes through the connecting portion 421, the one end of the sliding rack 47 extending out of the connecting portion 421 is provided with a trapezoidal extrusion block 471, the trapezoidal extrusion block 471 is preferably an isosceles trapezoidal structure, the trapezoidal extrusion block 471 is slidably arranged in the annular limiting groove 41, the sliding rack 47 is in meshing connection with the driving gear 46, when the spoiler 42 swings, the sliding rack 47 can slide in the annular limiting groove 41, the other end of the sliding rack 47 is connected with the mounting cavity 45 through the limiting spring 472, under the elastic action of the limiting spring 472, the sliding rack 47 abuts against the inner wall of the annular limiting groove 41, and at this time, the rotation of the rotating shaft 43 is controlled by the rotation of the driving gear 46, that is, the rotation of the rotating shaft 43 and the spacing plate 44 can be controlled by the sliding of the sliding rack 47. In addition, the inner wall of the annular limiting groove 41 is also provided with two oppositely arranged protrusions 473, the protrusions 473 are arc-shaped protrusions, the end close to the sliding rack 47 is a plane, the protrusions 473 are in corresponding matching connection with the sliding rack 47, and the two protrusions 473 are mainly used for driving the sliding rack 47 to slide. When the sliding rack 47 is in contact with the protrusions 473, the trapezoidal extrusion block 471 first contacts the protrusions 473 and is extruded into the mounting cavity 45, at this time, the sliding rack 47 moves synchronously and drives the plurality of driving gears 46 to rotate synchronously.

[0044] Specifically in the embodiment, in the directional cleaning stroke (taking the first corner as an example), the driving motor 428 drives the driving shaft 424 to rotate, the driving block 427 slides in the installation slot 425 and contacts the stop block 426 close to the first vertical flue 1, at this time, the stop block 426 is synchronously driven and drives the connecting part 421 to rotate by a certain angle, the movement of the connecting part 421 drives the sliding rack 47 and the trapezoidal extrusion block 471 to slide in the annular limiting slot 41, when the connecting part 421 rotates to start aligning with the first corner, the trapezoidal extrusion block 471 contacts the protrusion 473 and is extruded inward by the protrusion 473, the movement of the trapezoidal extrusion block 471 drives the sliding rack 47 to slide in the installation cavity 45, at this time, the limiting spring 472 is compressed, and the plurality of driving gears 46 are also synchronously driven and rotated by the sliding rack 47, so that the plurality of partition plates 44 are also synchronously rotated and contact each other to form a sealed state to block the flow of flue gas, so that the flue gas can be accelerated to blow along the plurality of partition plates 44 in contact with each other to the first corner, under the premise of ensuring that the partition plates 44 do not cause great obstruction to the flue gas flow, the partition plates 44 can also accelerate and guide the flue gas in the directional cleaning stroke; as described above, the partition plates 44 have two working states, one is corresponding to the stable flow stroke and the free swing stroke, at this time, the partition plates 44 rotate by a certain angle but do not contact, and the adjacent partition plates 44 have a certain spacing to facilitate the flow of flue gas, the other is corresponding to the directional cleaning stroke, at this time, the angle of rotation of the partition plates 44 increases until the plurality of partition plates 44 contact each other to block the flow of flue gas, at this time, the flue gas can only be accelerated to blow to the first corner or the second corner under the block of the plurality of partition plates 44, so that, under the premise of ensuring that the partition plates 44 do not cause great obstruction to the flue gas flow, the effect of accelerating and guiding the flue gas by the partition plates 44 in the directional cleaning stroke is maintained.

[0045] The foregoing merely describes some exemplary embodiments of the present application by way of illustration, and it is needless to say that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present application. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present application.

Claims

1. A device for clearing blockage at the intersection of waste heat boiler flues, comprising a first vertical flue, a horizontal flue, and a second vertical flue connected in sequence, characterized in that: The bottom wall of the horizontal flue is inclined, and the connection between the bottom wall of the horizontal flue and the second vertical flue is inclined downward.

2. The blockage removal device for the intersection of waste heat boiler flues according to claim 1 is characterized in that: The horizontal flue is connected between the top ends of the first vertical flue and the second vertical flue, and an ash hopper for collecting and outputting coke blocks and fly ash is provided at the bottom of the second vertical flue.

3. The blockage removal device for the intersection of waste heat boiler flues according to claim 1 is characterized in that: The connection point between the first vertical flue and the horizontal flue is defined as an intersection, and a spoiler component is installed in the first vertical flue, and the spoiler component is located above the intersection.

4. The blockage removal device for the intersection of waste heat boiler flues according to claim 3 is characterized in that: The spoiler assembly includes an annular limiting groove opened on the inner wall of the first vertical flue, a spoiler is slidably installed in the annular limiting groove, a first torsion spring is connected between the spoiler and the inner wall of the first vertical flue, and the first torsion spring is used to maintain the initial state of the spoiler.

5. The blockage removal device for the intersection of waste heat boiler flues according to claim 4 is characterized in that: The lower end of the spoiler is an arc-shaped surface.

6. The blockage removal device for the intersection of waste heat boiler flues according to claim 5, characterized in that: The lower end of the spoiler is fitted at the intersection.

7. The blockage removal device for the intersection of waste heat boiler flues according to claim 6, characterized in that: The spoiler is composed of a connecting portion and a spoiler portion. The spoiler portion is mounted on the upper end of the connecting portion, and the connecting portion is slidably arranged in the annular limiting groove.

8. The blockage clearing device for the intersection of waste heat boiler flues according to claim 1, characterized in that: A through hole is provided in the connecting portion, and a driving shaft is rotatably installed in the through hole. Both ends of the driving shaft rotate and pass through the side wall of the first vertical flue. A mounting groove is also provided on the inner side wall of the through hole, and two stop blocks are relatively arranged in the mounting groove. A driving block is formed on the driving shaft, and the driving block and the stop block are correspondingly arranged. When the driving block rotates a certain angle, the driving block begins to contact the stop block. A driving motor is installed on the outer side wall of the first vertical flue, and the output shaft of the driving motor is connected to the driving shaft.

9. The blockage clearing device for the intersection of waste heat boiler flues according to claim 8, characterized in that: The included angle between the stop block and the horizontal plane is 45 degrees.

10. The blockage clearing device for the intersection of waste heat boiler flues according to claim 8, characterized in that: The driving blocks are arranged vertically in an initial state.

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