Anti-blocking dredging device for pulverized coal slag well and using method of anti-blocking dredging device

Abstract

The invention relates to the technical field of slag well containers, and discloses a pulverized coal slag well anti-blocking dredging device and a using method thereof.The pulverized coal slag well anti-blocking dredging device comprises an upper hopper and a lower hopper arranged at the bottom of the upper hopper and further comprises dredging assemblies arranged on the two sides of the interior of the upper hopper; the dredging assembly specifically comprises a base plate arranged in the lower hopper, a hydraulic telescopic rod arranged on the top of the base plate and a base table. According to the anti-blocking dredging device for the pulverized coal slag well, through the arrangement of the dredging assembly, when an opening in the lower portion of the lower hopper is blocked, a hydraulic telescopic rod pushes a pushing plate to move along the inner wall of the lower hopper, ash accumulated at the opening in the lower portion of the lower hopper is loosened and falls off, the dredging and anti-blocking effects are achieved, and therefore the combustion state in an incinerator is guaranteed; and meanwhile, the pushing plate swings leftwards and rightwards, so that some large hard ash and coke blocks or hard ash and coke blocks attached to the inner wall of the lower hopper can be crushed and fall down from the lower hopper, and the dredging effect is further improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of slag well containers, and particularly relates to a coal powder furnace slag well anti-blocking dredging device and a use method thereof. BACKGROUND

[0002] As a key thermal energy equipment in the fields of electric power, chemical industry and the like, the stable operation of a coal powder furnace is directly related to production efficiency and system safety. As a core hub of a slag removal system of the coal powder furnace, a slag well bears the important functions of receiving ash and slag generated by combustion in a hearth, temporarily storing the ash and slag, and sealing the hearth, and is a key transitional component connecting the hearth and downstream slag removal equipment (such as a dry slag machine, a slag conveyor and the like).

[0003] The prior art has the following defects:

[0004] During the operation of the coal powder furnace, ash and slag (including bottom slag, coke slag and the like) generated by combustion in the hearth falls to the slag well under the action of gravity, and then enters subsequent slag removal equipment through the bottom outlet of the slag well. However, due to the influence of various factors, the slag well is frequently blocked, which has become a prominent bottleneck restricting the continuous and stable operation of the coal powder furnace. Specifically, the causes of the blockage mainly include the following aspects: firstly, large coke slag formed due to insufficient combustion of coal powder is easily stuck in the conical section or the outlet of the slag well during the falling process, forming a "bridge" phenomenon; secondly, the ash and slag have strong cohesiveness, especially in a wet slag removal system, the ash and slag are easily adhered to the inner wall of the slag well after being contacted with water, and gradually form an accumulated slag layer as the running time accumulates, resulting in a reduction in the effective flow cross section; thirdly, when the boiler load fluctuates, the coal type is changed and the like, the production amount and physical properties (such as particle size and hardness) of the ash and slag change, and the existing anti-blocking measures are difficult to adapt, further aggravating the blockage risk.

[0005] Once the slag well is blocked, a series of serious consequences will be caused: on the one hand, the ash and slag cannot be smoothly discharged, and will be accumulated at the bottom of the hearth, affecting the combustion conditions in the hearth, resulting in a reduction in the combustion efficiency, and even a safety accident may be caused due to abnormal negative pressure of the hearth; on the other hand, the blockage will damage the water sealing effect of the slag well, cold air will invade the hearth from the blockage gap, not only reducing the hearth temperature, but also increasing the energy consumption of the induced draft fan, and meanwhile, thermal stress damage of components such as a lower header of a water wall may be caused due to temperature fluctuation. SUMMARY

[0006] In view of the problem of ash and slag blockage in the prior art, a coal powder furnace slag well anti-blocking dredging device and a use method thereof are provided.

[0007] The present application provides a coal powder furnace slag well anti-blocking dredging device and a use method thereof, and the purpose is to dredge the blocked ash and slag.

[0008] The technical scheme of the present application is: a kind of coal powder furnace slag well anti-blocking dredging device, including upper hopper, lower hopper being arranged in the bottom of upper hopper, further including dredging assembly being arranged in the both sides of the inside of upper hopper, and the specific composition of dredging assembly includes base plate being arranged in the inside of lower hopper, hydraulic telescopic rod and base station being arranged in the top of base plate, swing chute being arranged in the bottom of base plate, swing sliding block being arranged in the inside of swing chute, push plate being arranged in the bottom of swing sliding block, drive assembly being arranged between base plate and push plate;

[0009] The hydraulic telescopic rod is upwardly penetrated out of lower hopper, swing sliding block is slidingly connected in swing chute, push plate is attached to the inner wall of lower hopper, and the length of push plate is less than the length of lower hopper.

[0010] Further, the bottom area of the upper hopper is less than the top area of the lower hopper.

[0011] Further, the hydraulic telescopic rod is provided with two, and is distributed on the both sides of base station, two hydraulic telescopic rods are rotationally connected with base plate, and two rotation axes are parallelly arranged.

[0012] Further, the push plate includes fixed part and movable part, the fixed part and the movable part are rotationally connected, and the connecting point is located on the lower surface of the fixed part and the movable part.

[0013] Further, the push plate is perpendicularly arranged with the inner wall of lower hopper.

[0014] Further, the drive assembly specifically includes mounting slot being arranged in the inside of swing chute, adjusting telescopic rod being arranged between mounting slot and swing sliding block, gas collecting groove being arranged on the side of base station away from push plate, cover plate being arranged on the opening of gas collecting groove, air pipe being arranged on the surface of cover plate, assembly groove being arranged on the inner bottom wall of gas collecting groove, assembly box being arranged in the inside of assembly groove, mounting port being arranged between the both ends of assembly box and the inner wall of gas collecting groove, communication channel being arranged between mounting port and mounting slot, sliding groove being arranged on the bottom of assembly box, displacement slot being arranged on the inner wall of sliding groove, closed sliding block being arranged in the inside of sliding groove, boss being arranged in the inside of displacement slot, rotating turbine being arranged in the inside of mounting port, winding shaft being arranged on the bottom of rotating turbine, traction rope being arranged between two winding shafts.

[0015] The adjusting telescopic rod is communicated with communication channel, the air pipe is communicated with gas collecting groove, the assembly groove is located in the communication of two communication channels, the closed sliding block closes one side of communication channel, the boss is fixedly connected with the closed sliding block, the both ends of assembly box and the both sides of boss are provided with through holes, the diameter of the through hole penetrating the boss is less than the diameter of the through hole of assembly box, the outer side of traction rope is provided with pusher, and the traction rope penetrates the through hole.

[0016] Further, the drive assembly further includes internal air cavity being arranged in push plate, and air hole being arranged in the inside of swing sliding block.

[0017] The air vent is communicated with the air cavity at one end and communicated with the adjusting telescopic rod at the other end, and the surface of the pushing plate is provided with air blowing holes communicated with the air cavity.

[0018] Further, the upper hopper is provided with a shell cover on both sides, which covers the outside of the hydraulic telescopic rod and the air pipe.

[0019] The application also provides a use method of the coal powder furnace slag well anti-blocking dredging device, which comprises the following steps:

[0020] Data acquisition and blocking risk assessment: through the sensors installed in the incinerator and the lower hopper, the boiler operation parameters are collected in real time, and the risk is assessed according to these parameters.

[0021] Mechanical dredging: when the risk occurs, the hydraulic telescopic rod pushes the pushing plate to move downward along the inner wall of the lower hopper, and air is blown into the air pipe at the same time, and the pushing plate starts to swing under the action of the air during the movement, so as to dredge and crush the ash and coke in the lower hopper.

[0022] Effect verification: after dredging, the detection is carried out again to determine whether the dredging is successful.

[0023] The application has the following beneficial effects:

[0024] 1. When the opening below the lower hopper is blocked, the hydraulic telescopic rod pushes the pushing plate to move along the inner wall of the lower hopper, so that the ash and slag accumulated below the opening of the lower hopper is loosened and falls off, thereby playing a dredging and anti-blocking role, so as to ensure the combustion state in the incinerator and enable the combustion equipment to operate stably for a long time.

[0025] 2. By making the bottom area of the upper hopper smaller than the top area of the lower hopper, a dead angle area for ash and slag falling can be formed at both sides of the top of the lower hopper, and in the falling slag state, the dredging assembly is accommodated in the four corner areas of the lower hopper, so as to reduce the influence of high-temperature falling slag on the dredging assembly, and facilitate the long-term stable operation of the dredging equipment.

[0026] 3. By arranging two independently controlled hydraulic telescopic rods, when cleaning, if hard ash and coke blocks are encountered, the pushing plate is blocked, the hydraulic telescopic rod on the side close to the coke block stops moving, and the hydraulic telescopic rod on the other side continues to push, so that the pushing plate has a certain inclination angle, and the pushing plate breaks the coke block from another angle, so as to improve the breaking efficiency.

[0027] 4. By dividing the pushing plate into a fixed part and a movable part, when the pushing plate is pushed downward, one side of the movable part is in contact with the fixed part, and the movable part cannot flip upward, so the ash can be pushed normally. When the pushing plate is reset, the movable part will flip downward under the influence of friction or the gravity of the ash above, so that the ash above the pushing plate moves to the bottom of the pushing plate. This can improve the cleaning effect in the lower hopper and prevent some ash from accumulating above the pushing plate.

[0028] 5. By setting a driving component, when the push plate moves, the air pipe will pass air into the air gathering tank. At this time, the connecting channel on one side is blocked by the closed slider, and the air in the air gathering tank flows into the connecting channel on the other side. The airflow drives the rotating turbine to rotate, and the rotating turbine drives the reeling shaft to rotate and rewind the traction rope. After a period of time, the pushing piece on the outside of the traction rope is released, and the traction rope drives the closed slider to break through the lock of the spring buckle. The closed slider slides in the sliding groove to block the originally open connecting channel, and the originally closed connecting channel is opened. The working process is the same as above, so that the assembly slot is pushed to the other side by another adjustable telescopic rod. The air is used as power and the mechanical components are coordinated to achieve the effect of controlling the swing of the push plate, which can make the equipment more adaptable to the high temperature environment in the lower bucket, with a longer service life and a more stable working state.

[0029] At the same time, when air enters the adjustable telescopic rod, the adjustable telescopic rod is first inflated and extended, and then the air breaks through the pressure valve and flows into the air cavity from the vent hole, and finally is ejected from the blowing hole, thus further improving the cleaning effect of the ash. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A three-dimensional diagram of the pulverized coal furnace slag well anti-blocking and dredging device of the present invention;

[0031] Figure 2 This is a disassembled diagram of the pulverized coal furnace slag well anti-blocking and dredging device of the present invention;

[0032] Figure 3 This is a schematic diagram of the dredging component of the present invention;

[0033] Figure 4 This is a disassembled diagram of the dredging component of the present invention;

[0034] Figure 5 For the present invention Figure 4 Second perspective image;

[0035] Figure 6 This is a schematic diagram of the push plate of the present invention;

[0036] Figure 7 This is a schematic diagram of the top of the substrate of the present invention;

[0037] Figure 8 For the present invention Figure 7 Enlarged view of point A in the middle;

[0038] Figure 9 Disassembling view of internal fittings of the assembly box of the present application;

[0039] Figure 10 Disassembling view of internal fittings of the assembly box of the present application; Figure 9 Second perspective view;

[0040] Figure 11 Plan view of the anti-blocking dredging device for the slag well of the coal powder furnace of the present application;

[0041] Figure 12 Plan view of the anti-blocking dredging device for the slag well of the coal powder furnace of the present application; Figure 11 Sectional view;

[0042] Figure 13 Plan view of the anti-blocking dredging device for the slag well of the coal powder furnace of the present application;

[0043] Figure 14 Plan view of the anti-blocking dredging device for the slag well of the coal powder furnace of the present application; Figure 13 Sectional view at B-B;

[0044] Figure 15 Plan view of the anti-blocking dredging device for the slag well of the coal powder furnace of the present application; Figure 14 Partial enlarged view;

[0045] Figure 16 Plan view of the anti-blocking dredging device for the slag well of the coal powder furnace of the present application; Figure 15 Enlarged view at C;

[0046] Figure 17 Plan view of the anti-blocking dredging device for the slag well of the coal powder furnace of the present application; Figure 15 Enlarged view at D.

[0047] In the figure:

[0048] 1, upper hopper; 2, lower hopper; 3, dredging assembly; 31, base plate; 32, hydraulic telescopic rod; 33, base; 34, swinging sliding groove; 35, swinging sliding block; 36, pushing plate; 361, fixed part; 362, movable part; 4, driving assembly; 41, mounting slot; 42, adjusting telescopic rod; 43, gas collecting groove; 44, cover plate; 45, air pipe; 46, assembly slot; 47, assembly box; 48, mounting port; 49, communication passage; 410, sliding groove; 411, displacement groove; 412, closed sliding block; 413, boss; 414, rotating turbine; 415, winding shaft; 416, traction rope; 417, air cavity; 418, air hole; 5, shell cover. DETAILED DESCRIPTION

[0049] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0050] Example 1, refer to Figures 1-17For the first embodiment of the present application, a coal powder furnace slag well anti-blocking dredging device is provided, which comprises an upper hopper 1, a lower hopper 2 arranged at the bottom of the upper hopper 1, and a dredging assembly 3 arranged at both sides of the upper hopper 1. The dredging assembly 3 specifically comprises a base plate 31 arranged inside the lower hopper 2, a hydraulic telescopic rod 32 and a base 33 arranged at the top of the base plate 31, a swing sliding groove 34 arranged at the bottom of the base plate 31, a swing sliding block 35 arranged inside the swing sliding groove 34, a pushing plate 36 arranged at the bottom of the swing sliding block 35, and a driving assembly 4 arranged between the base plate 31 and the pushing plate 36.

[0051] Specifically, the upper hopper 1 is fixed to the top of the lower hopper 2 by bolts, the upper hopper 1 is connected to an incinerator above, conveying equipment is arranged at the bottom of the lower hopper 2, a plurality of sensors are arranged in the incinerator and the lower hopper 2, the upper hopper 1 is rectangular, the lower hopper 2 is trapezoidal with a wide top and a narrow bottom, the hydraulic telescopic rod 32 penetrates upwardly out of the lower hopper 2 and is fixed to the lower hopper 2 by bolts, the base 33 is welded to the base plate 31, the swing sliding block 35 is fixedly connected to the pushing plate 36, the swing sliding block 35 is slidingly connected in the swing sliding groove 34, the base plate 31 is attached to the assembly groove 46, the pushing plate 36 is attached to the inner wall of the lower hopper 2, the length of the pushing plate 36 is less than the length of the lower hopper 2, the width of the base plate 31 is less than the pushing plate 36, and the base plate 31 is not attached to the inner wall of the lower hopper 2, and the pushing plate 36 is arranged perpendicularly to the inner wall of the lower hopper 2. In this way, the pushing effect on the ash slag can be improved, and the lower surface of the pushing plate 36 is provided with cleaning tooth cones arranged in a matrix, which is conducive to the crushing of hard ash slag lumps by the pushing plate 36.

[0052] By arranging the dredging assembly 3, when the opening below the lower hopper 2 is blocked, the hydraulic telescopic rod 32 pushes the pushing plate 36 to move along the inner wall of the lower hopper 2, so that the ash slag accumulated at the opening below the lower hopper 2 is loosened and falls off, thereby playing a dredging and anti-blocking role, so as to ensure the combustion state in the incinerator and enable the combustion equipment to operate stably for a long time. When the pushing plate 36 moves downward, the driving assembly 4 controls the pushing plate 36 to swing left and right, so that the cleaning tooth cones on the surface of the pushing plate 36 can crush some large or hard ash slag lumps adhered to the inner wall of the lower hopper 2, so that they fall from the lower hopper 2, further improving the dredging effect.

[0053] Specifically, the bottom area of the upper hopper 1 is less than the top area of the lower hopper 2, and the width of the upper hopper 1 is less than the top width of the lower hopper 2. In this way, a dead angle area for ash slag to fall can be formed at both sides of the top of the lower hopper 2. In the ash falling state, the dredging assembly 3 is accommodated in the four corner areas of the lower hopper 2, so as to reduce the influence of high-temperature ash falling on the dredging assembly 3, and facilitate the long-term stable operation of the dredging equipment.

[0054] Specifically, the hydraulic telescopic rods 32 are arranged on both sides of the base 33, and the two hydraulic telescopic rods 32 are rotatably connected to the base plate 31, and the two rotation axes are arranged in parallel, the two hydraulic telescopic rods 32 are independently controlled, and the pressure sensors are arranged in the two hydraulic telescopic rods 32.

[0055] By arranging the two independently controlled hydraulic telescopic rods 32, when cleaning, if hard and difficult-to-crush ash and cinder blocks are encountered, the movement of the pushing plate 36 is blocked, the hydraulic telescopic rod 32 on the side close to the cinder block stops moving, and the hydraulic telescopic rod 32 on the other side continues to push, so that the pushing plate 36 is inclined at a certain angle, and the pushing plate 36 is crushed from another angle of the cinder block, so that the crushing efficiency is improved.

[0056] Specifically, the pushing plate 36 includes a fixed part 361 and a movable part 362, the fixed part 361 and the movable part 362 are rotatably connected, and the connection point is located on the lower surface of the fixed part 361 and the movable part 362, the width ratio of the movable part 362 to the fixed part 361 is 2:8, the movable part 362 is located on the side of the fixed part 361 close to the inner wall of the lower hopper 2, and one end of the movable part 362 close to the inner wall of the lower hopper 2 is arranged as an inclined surface to facilitate the rotation of the movable part 362, and the swinging sliding block 35 is located on the fixed part 361.

[0057] By dividing the pushing plate 36 into the fixed part 361 and the movable part 362, when the pushing plate 36 is pushed downward, the movable part 362 is attached to the fixed part 361 on one side, the movable part 362 cannot be turned upward, and the ash can be normally pushed, and when the pushing plate 36 is reset, the movable part 362 is turned downward under the influence of friction or the gravity of the ash above, so that the ash above the pushing plate 36 is moved below the pushing plate 36, so that the cleaning effect in the lower hopper 2 is improved, and part of the ash is accumulated above the pushing plate 36.

[0058] The driving assembly 4 specifically includes a mounting slot 41 arranged in the swinging sliding groove 34, an adjusting telescopic rod 42 arranged between the mounting slot 41 and the swinging sliding block 35, a gas gathering groove 43 arranged on the side of the base 33 away from the pushing plate 36, a cover plate 44 arranged at the opening of the gas gathering groove 43, an air pipe 45 arranged on the surface of the cover plate 44, an assembly groove 46 arranged in the inner bottom wall of the gas gathering groove 43, an assembly box 47 arranged in the assembly groove 46, a mounting opening 48 arranged between the assembly box 47 and the inner wall of the gas gathering groove 43, a communication channel 49 arranged between the mounting opening 48 and the mounting slot 41, a sliding groove 410 arranged at the bottom of the assembly box 47, a displacement groove 411 arranged on the inner wall of the sliding groove 410, a closed sliding block 412 arranged in the sliding groove 410, a boss 413 arranged in the displacement groove 411, a rotating turbine 414 arranged in the mounting opening 48, a winding shaft 415 arranged at the bottom of the rotating turbine 414, and a traction rope 416 arranged between the two winding shafts 415.

[0059] Specifically, one end of the adjusting telescopic rod 42 is inserted into the mounting slot 41 and fixed by a bolt, the other end of the adjusting telescopic rod 42 is fixed with the swing slider 35 through a bolt, the adjusting telescopic rod 42 is communicated with the communication channel 49, the cover plate 44 is buckled at the opening of the air collecting groove 43 and fixed by a bolt, the air pipe 45 is welded with the cover plate 44, the air pipe 45 is communicated with the air collecting groove 43, the air pipe 45 is connected with an air pump outside, the assembly box 47 is clamped in the assembly groove 46, the bottom wall of the assembly groove 46 is provided with a spring buckle, the bottom wall of the assembly box 47 is provided with two clamping grooves, the spring buckle is clamped in one clamping groove, the assembly groove 46 is located between the two communication channels 49, the sliding groove 410 is communicated with the two communication channels 49, the closing slider 412 is slidingly connected in the sliding groove 410, the closing slider 412 closes one side of the communication channel 49, the boss 413 is fixedly connected with the closing slider 412, the rotating turbine 414 is sleeved with a bearing outside, the rotating turbine 414 is clamped in the mounting port 48, the assembly box 47 and the boss 413 are both provided with through holes, the diameter of the through hole in the boss 413 is smaller than that of the through hole in the assembly box 47, the winding shaft 415 is fixedly connected with the rotating turbine 414, the traction rope 416 is wound outside the winding shaft 415, the traction rope 416 has elasticity, two pushers are arranged outside the traction rope 416, the two pushers are respectively distributed near the two ends of the traction rope 416, the traction rope 416 penetrates through the through hole, the pusher can pass through the through hole in the assembly box 47 but cannot pass through the through hole in the boss 413.

[0060] The driving assembly 4 further comprises an internal air cavity 417 formed in the push plate 36 and an air hole 418 formed in the interior of the swing slider 35.

[0061] Specifically, one end of the air hole 418 is communicated with the air cavity 417, and the other end is communicated with the adjusting telescopic rod 42, the surface of the push plate 36 is provided with a gas blowing hole communicated with the air cavity 417, the gas blowing hole is inclinedly arranged to guide the airflow to blow against the inner wall of the lower hopper 2, and the adjusting telescopic rod 42 is internally provided with a pressure valve.

[0062] By setting the driving assembly 4, when the push plate 36 moves, the air pipe 45 passes air into the air collecting groove 43, at this time the one side communication channel 49 is blocked by the blocking slider 412, the air in the air collecting groove 43 flows into the other side communication channel 49, the air flows into the adjusting telescopic rod 42, so that the adjusting telescopic rod 42 drives the push plate 36 to deviate to one side, at the same time, the airflow drives the rotating turbine 414 to rotate, the rotating turbine 414 drives the winding shaft 415 to wind the traction rope 416, with the winding shaft 415 winding the traction rope 416 continuously, the other side winding shaft 415 rotates to release the traction rope 416, the traction rope 416 shuttles in the through hole, after a period of time, the pusher outside the traction rope 416 is released, the pusher passes through the through hole on the assembly box 47 first, and then is clamped in the through hole opening on the boss 413, at this time the blocking slider 412 is locked by the spring buckle, so that the traction rope 416 is stretched under stress, when the traction rope 416 accumulates to a certain tension, the traction rope 416 drives the blocking slider 412 to break through the locking of the spring buckle, the blocking slider 412 slides in the sliding groove 410 to block the originally open communication channel 49, the originally blocked communication channel 49 is opened, and the working process is the same as above, so that the assembly groove 46 is pushed to the other side by the other adjusting telescopic rod 42, air is used as power to cooperate with mechanical components, the swing of the push plate 36 is controlled, the device can better adapt to the high temperature environment in the lower hopper 2, has a longer service life, and is more stable in working state.

[0063] At the same time, when air enters the adjusting telescopic rod 42, the adjusting telescopic rod 42 is first inflated and elongated, then air breaks through the pressure valve and flows into the air cavity 417 from the air hole 418, and finally is sprayed out from the air blowing hole, so that the cleaning effect on the ash is further improved.

[0064] Specifically, the two sides of the upper hopper 1 are provided with the shell cover 5, the lower end of the shell cover 5 falls on the top of the lower hopper 2, the shell cover 5 is fixed to the upper hopper 1 through bolts, and the shell cover 5 covers the outside of the hydraulic telescopic rod 32 and the air pipe 45, so as to protect and shield the hydraulic telescopic rod 32 and the air pipe 45.

[0065] Embodiment 2, refer to Figures 1-17 As a second embodiment of the present application, a coal powder furnace slag well anti-blocking dredging device use method is provided, including the following steps:

[0066] Data acquisition and risk assessment of blockage: through the sensors installed in the incinerator and the lower hopper 2, real-time collection of boiler operation parameters (furnace temperature, boiler load, slag discharge amount, furnace negative pressure), coal quality characteristic parameters (ash content, volatile content, coking index), and slag well state parameters (inner wall temperature, ash flow speed, pressure distribution uniformity) is realized, and the risk is evaluated according to these parameters.

[0067] Mechanical dredging: when the risk occurs, the hydraulic telescopic rod 32 pushes the push plate 36 to move downward along the inner wall of the lower hopper 2, and air is blown into the air pipe 45, the push plate 36 starts to swing under the action of air during the movement, and the ash and coke in the lower hopper 2 are dredged and broken.

[0068] Effect verification: after dredging, the flow speed of the ash is restored to 0.75 m / s (the normal flow speed is 0.8 m / s, and the recovery is 93.75%), the accumulation height does not obviously rise for 5 minutes in succession, and whether the dredging is successful is determined.

[0069] It should be noted that the above examples are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced equivalently without departing from the spirit and scope of the technical solutions of the present application, and they should be covered in the scope of the claims of the present application.

Claims

1. A pulverized coal furnace slag well anti-blocking and dredging device, comprising an upper bucket (1) and a lower bucket (2) arranged at the bottom of the upper bucket (1), characterized in that: The utility model also includes a dredging assembly (3) arranged on both sides of the interior of the upper bucket (1), wherein the dredging assembly (3) specifically includes a base plate (31) arranged inside the lower bucket (2), a hydraulic telescopic rod (32) and a base (33) arranged on the top of the base plate (31), a swinging chute (34) arranged at the bottom of the base plate (31), a swinging slider (35) arranged inside the swinging chute (34), a pushing plate (36) arranged at the bottom of the swinging slider (35), and a driving assembly (4) arranged between the base plate (31) and the pushing plate (36); The hydraulic telescopic rod (32) extends upward through the lower bucket (2), the swing slider (35) is slidably connected to the swing chute (34), and the push plate (36) is attached to the inner wall of the lower bucket (2), and the length of the push plate (36) is less than the length of the lower bucket (2).

2. The anti-blocking and dredging device for pulverized coal furnace slag well according to claim 1, characterized in that: The bottom surface area of ​​the upper bucket (1) is smaller than the top surface area of ​​the lower bucket (2).

3. The anti-blocking and dredging device for pulverized coal furnace slag well according to claim 1, characterized in that: Two hydraulic telescopic rods (32) are provided and distributed on both sides of the base (33). The two hydraulic telescopic rods (32) are rotatably connected to the base plate (31), and the two rotation axes are arranged in parallel.

4. The anti-blocking and dredging device for pulverized coal furnace slag well according to claim 1, characterized in that: The pushing plate (36) comprises a fixed portion (361) and a movable portion (362), wherein the fixed portion (361) and the movable portion (362) are rotatably connected, and the connection point is located on the lower surfaces of the fixed portion (361) and the movable portion (362).

5. The anti-blocking and dredging device for pulverized coal furnace slag well according to claim 1, characterized in that: The pushing plate (36) is arranged perpendicularly to the inner wall of the lower bucket (2).

6. The anti-blocking and dredging device for pulverized coal furnace slag well according to claim 1, characterized in that: The driving assembly (4) specifically includes a mounting slot (41) provided inside the swinging slide (34), an adjusting telescopic rod (42) provided between the mounting slot (41) and the swinging slider (35), an air gathering groove (43) provided on a side of the base (33) away from the pushing plate (36), a cover plate (44) provided at the opening of the air gathering groove (43), an air pipe (45) provided on the surface of the cover plate (44), an assembly groove (46) provided on the inner bottom wall of the air gathering groove (43), an assembly box (47) provided inside the assembly groove (46), and an air pipe (45) provided between the two ends of the assembly box (47) and the inner wall of the air gathering groove (43). a mounting opening (48) between the mounting opening (48) and the mounting slot (41); a communicating channel (49) provided between the mounting opening (48) and the mounting slot (41); a sliding groove (410) provided at the bottom of the assembly box (47); a displacement groove (411) provided on the inner wall of the sliding groove (410); a closed slider (412) provided inside the sliding groove (410); a boss (413) provided inside the displacement groove (411); a rotating turbine (414) provided inside the mounting opening (48); a reel (415) provided at the bottom of the rotating turbine (414); and a traction rope (416) provided between the two reeling shafts (415); The adjustable telescopic rod (42) is connected to the communication channel (49), the air pipe (45) is connected to the air gathering groove (43), the assembly groove (46) is located in the communication between the two communication channels (49), the closed slider (412) closes one side of the communication channel (49), the boss (413) is fixedly connected to the closed slider (412), through holes are provided at both ends of the assembly box (47) and on both sides of the boss (413), and the diameter of the through hole on the boss (413) is smaller than that of the through hole on the assembly box (47), a pushing member is provided on the outside of the traction rope (416), and the traction rope (416) passes through the through hole.

7. The anti-blocking and dredging device for pulverized coal furnace slag well according to claim 6, characterized in that: The driving assembly (4) further includes an internal air cavity (417) provided in the pushing plate (36) and a vent hole (418) provided in the interior of the swinging slider (35); One end of the vent hole (418) is communicated with the air cavity (417), and the other end is communicated with the adjusting telescopic rod (42). The surface of the pushing plate (36) is provided with a blowing hole communicated with the air cavity (417).

8. The anti-blocking and dredging device for pulverized coal furnace slag well according to claim 6, characterized in that: Shell covers (5) are provided on both sides of the upper bucket (1), and the shell covers (5) cover the outer sides of the hydraulic telescopic rod (32) and the air pipe (45).

9. A method for using a pulverized coal furnace slag well anti-blocking dredging device, using the pulverized coal furnace slag well anti-blocking dredging device according to claim 8, characterized in that: The following steps are involved: Data collection and blockage risk assessment: sensors installed in the incinerator and the lower hopper (2) collect boiler operating parameters in real time and assess the risk based on these parameters; Mechanical dredging: When a risk occurs, the hydraulic telescopic rod (32) pushes the push plate (36) to move downward along the inner wall of the lower bucket (2), and at the same time, air is blown in from the air pipe (45). During the movement, the push plate (36) begins to swing under the action of the air, thereby dredging and crushing the ash and coke blocks in the lower bucket (2); Effect verification: After unblocking, test again to determine whether the unblocking is successful.

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