A slagging prevention system for pulverized coal boiler

Abstract

The present invention discloses a slagging prevention system for a pulverized coal boiler, and relates to the technical field of slagging prevention for pulverized coal boilers, including a pulverized coal boiler, a mobile frame is installed at one end of the pulverized coal boiler, a fixed seat is fixedly installed at the top of the mobile frame, a ash cleaning mechanism for cleaning the inner wall of the pulverized coal boiler is arranged inside the fixed seat, and a dust suction mechanism for removing dust from the pulverized coal boiler is arranged at one end of the pulverized coal boiler. The present invention realizes reciprocating movement of the nozzle along the inside of the pulverized coal boiler by arranging a transmission mechanism, an ash cleaning mechanism and a dust suction mechanism, and sprays high-energy gas to suspend and lift the dust attached to the inner wall of the pulverized coal boiler, and rotates the fan blades to absorb the air containing dust in the pulverized coal boiler into the dust suction pipe, and then the dust is filtered by the dust filter bag and discharged to the external environment, which is convenient and fast, greatly improves the ash removal efficiency of the pulverized coal boiler, and greatly reduces the labor intensity.

Description

Technical Field

[0001] The invention relates to the technical field of anti-slagging of pulverized coal boilers, in particular to an anti-slagging system of a pulverized coal boiler. Background Art

[0002] A pulverized coal boiler is an industrial or utility boiler that generates heat by burning pulverized coal (also called powdered coal or pulverized coal because it is as fine as the flour in cosmetics) that is blown into the combustion chamber. The basic idea of ​​a combustion system using pulverized fuel is to use the entire furnace to burn solid fuel. The coal is ground into a fine particle size, mixed with air and burned in the flue gas stream. The slagging in the furnace of a pulverized coal boiler often reduces the heat transfer capacity of the water-cooled walls in the furnace, and the center of the flame in the furnace moves backward, which further causes the flue gas temperature at the furnace outlet to increase. The increase in the furnace flue gas temperature makes the superheated air temperature high, which not only harms the superheater, but also causes turbine accidents. The heat transfer resistance increases, making it impossible for the boiler to maintain full load operation, so the coal feed has to be increased, causing the furnace outlet flue gas temperature to increase. The further the temperature rises, the easier it is for the ash to adhere to the heated surface, forming a vicious cycle and triggering a series of vicious cycle accidents. Large pieces of slag falling will also damage the water-cooled wall and the ash hopper, causing the ash hopper to be blocked, leading to furnace flameout. Therefore, how to alleviate the slagging problem in the boiler furnace is particularly important. Compression waves in which stress (or pressure), density and temperature in gas, liquid and solid media undergo sudden changes on the wave front are also called shock waves. Shock waves will appear in supersonic flow, explosion and other processes. The shock wave formed during the explosion is also called blast wave. The wave formed by the sudden closing of a valve in a water pipe is also a shock wave. In solid media, strong impact will form shock waves (see shock waves in solids), and shock waves will also form in plasma.

[0003] In order to prevent slagging on the inner wall of the furnace during use, the inner wall of the furnace needs to be cleaned frequently. The existing pulverized coal boiler cleaning is usually done manually using tools such as brooms, which is very inefficient and labor-intensive. Summary of the invention

[0004] The purpose of the present invention is to provide a slagging prevention system for a pulverized coal boiler in order to solve the problem of low ash cleaning efficiency of the pulverized coal boiler.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a slagging prevention system for a pulverized coal boiler, comprising a pulverized coal boiler, a movable frame is installed at one end of the pulverized coal boiler, a fixed seat is fixedly installed at the top of the movable frame, a cleaning mechanism for cleaning the inner wall of the pulverized coal boiler is arranged inside the fixed seat, a dust suction mechanism for removing dust from the pulverized coal boiler is arranged at one end of the pulverized coal boiler, and a transmission mechanism is arranged at one end of the movable frame; the cleaning mechanism comprises a reciprocating screw rod rotatably installed inside the fixed seat, the reciprocating screw rod is rotated to rotate inside the fixed seat, and the reciprocating screw rod is rotated to rotate inside the fixed seat. The outer wall of the multi-filament rod is sleeved with a transmission seat, the top of the transmission seat is fixedly welded with a connecting seat, one end of the connecting seat is fixedly installed with a fixing rod, one end of the fixing rod is fixedly installed with a nozzle, one end of the nozzle is fixedly connected with a fixing pipe, the end of the fixing pipe away from the nozzle is connected with an air guide pipe, a gas energy shock wave soot blowing device is fixedly installed on one side of the outer wall of the movable frame, the bottom end of the air guide pipe is connected and penetrated with the output end of the gas energy shock wave soot blowing device, the dust suction mechanism includes a dust suction hood installed at one end of the pulverized coal boiler, and the dust suction The bottom end of the hood is connected to a dust suction pipe, the bottom end of the dust suction pipe is connected to a dust filter bag, a fan blade is rotatably installed inside the dust hood, one end of the fan blade is fixedly connected to a fan shaft, the fan shaft passes through the outside of the dust hood, a through groove is opened inside the dust hood, the inner wall of the through groove matches the outer wall of the fixing rod, the transmission mechanism includes a motor fixedly installed on one side of the outer wall of the fixing seat, the output end of the motor is connected to a transmission shaft, the outer wall of the transmission shaft is located at one end of the fixing seat and is fixedly sleeved with a worm, the One end of the reciprocating screw is located at the bottom end of the worm and is fixedly connected to a worm wheel, the worm and the worm wheel are meshed with each other, the outer wall of the transmission shaft is located at one end of the dust cover and is fixedly sleeved with an internal gear ring, the inner wall of the worm wheel is meshed with a spur gear, one end of the spur gear is fixedly connected to a connecting shaft, one end of the connecting shaft is fixedly connected to a first bevel gear, one end of the outer wall of the first bevel gear is meshed with a second bevel gear, the top end of the second bevel gear is meshed with a third bevel gear, and the third bevel gear is fixedly welded to one end of the fan shaft.

[0006] In this way, the movable frame is moved to one side of one end of the pulverized coal boiler, and the dust cover is aligned with one end of the pulverized coal boiler, and then the motor is started to drive the transmission shaft to rotate, so that the transmission shaft drives the worm to rotate, and the worm drives the worm wheel to rotate, so that the worm wheel drives the reciprocating screw, and the transmission seat moves along the outer wall of the reciprocating screw, so that the transmission seat drives the connecting seat to move, and the connecting seat drives the fixed rod to move, so that the fixed rod drives the nozzle to move toward the inside of the pulverized coal boiler, so that the gas energy shock wave soot blowing equipment sprays high-energy gas, and the high-energy gas is transported to the fixed pipe by the gas guide pipe. The pipe delivers high-energy gas to the nozzle, so that the nozzle cleans the inner wall of the pulverized coal boiler. At the same time, the transmission shaft rotates to drive the inner gear ring to rotate, so that the inner gear ring drives the spur gear to rotate, and the spur gear drives the connecting shaft to rotate, so that the connecting shaft drives the first bevel gear to rotate, and the first bevel gear drives the second bevel gear to rotate. At the same time, the second bevel gear drives the third bevel gear to rotate, so that the third bevel gear drives the fan shaft to rotate, and the fan shaft drives the fan blades to rotate, so that the dust raised inside the pulverized coal boiler is sucked into the dust suction pipe along the airflow, so that the airflow is filtered by the dust filter cloth. The bag filters the dust and then discharges it to the outside. Through the mutual cooperation of the above parts, the nozzle moves back and forth along the inside of the pulverized coal boiler and sprays high-energy gas to suspend the dust attached to the inner wall of the pulverized coal boiler and lift it up. The fan blades rotate to absorb the air containing dust in the pulverized coal boiler into the dust suction pipe, and then the dust is filtered by the dust filter bag and then discharged to the external environment. It is convenient and fast, which greatly improves the ash removal efficiency of the pulverized coal boiler, thereby effectively preventing the slagging of the pulverized coal boiler. It should be noted that the gas energy shock wave soot blowing equipment in this example is the gas energy shock wave in the prior art. A sootblower is a device that generates shock waves from compressed gas through a shock wave generator. The main body of the shock wave tube group inside the pneumatic shock wave sootblower is composed of two sections of pipes, the high-pressure section and the low-pressure section. The pipe body is divided into two sections, high and low pressure, by a diaphragm made of annealed aluminum film. The high-pressure gas source comes from an air compressor or a high-pressure gas cylinder. When the pressure in the high-pressure section gradually rises, the diaphragm is gradually deformed by the pressure until it ruptures. After the diaphragm ruptures, the high-pressure gas pushes the low-pressure section gas forward, and the front of the moving gas forms a clean discontinuity surface, which is called a shock wave in aerodynamics.

[0007] As a further solution of the present invention: a support rod is fixedly installed at the bottom end of the fixed rod, the support rod is located at one end of the fixed rod close to the nozzle, and first rollers are rotatably installed on both sides of the outer wall of the bottom end of the support rod.

[0008] In this way, when the nozzle moves into the pulverized coal boiler, the bottom end of the first roller contacts the bottom end of the inner wall of the pulverized coal boiler, thereby supporting the support rod and the first roller to one end of the fixed rod, so that the nozzle can move stably in the pulverized coal boiler.

[0009] As a further solution of the present invention: a plurality of second rollers are rotatably installed on the inner bottom end of the movable frame, an equipment seat is fixedly welded on one side of the outer wall of the movable frame, the gas energy shock wave soot blowing equipment is fixedly installed on the top of the equipment seat through a fixed frame, and a plurality of third rollers are rotatably installed on one side of the outer wall of the equipment.

[0010] In this way, the mobile frame is supported by several second rollers, which facilitates the movement and transportation of the mobile frame. The gas energy shock wave soot blowing equipment is fixedly installed on one side of the outer wall of the mobile frame through the equipment seat, and the equipment seat is supported by the third roller, so that the mobile frame is stably placed and can support the movement of the equipment seat.

[0011] As a further solution of the present invention: the reciprocating screw is rotatably connected to the fixed seat through a bearing, one end of the reciprocating screw penetrates to one end of the outer wall of the fixed seat, a rotatable crescent pin is provided inside the transmission seat, and fourth rollers are rotatably installed on both sides of the outer wall of the transmission seat, and the bottom end of the fourth roller is in contact with the bottom end of the inner wall of the fixed seat.

[0012] In this way, when the reciprocating screw rotates, the transmission seat moves along the outer wall of the reciprocating screw. By arranging fourth rollers on both sides of the outer wall of the transmission seat, the contact friction between the transmission seat and the fixed seat is reduced, thereby reducing wear.

[0013] As a further solution of the present invention: a plurality of jet pipes are connected through the outer wall of the nozzle, and the plurality of jet pipes are arranged in a circle at equal angles. The fixed pipe is fixedly installed inside the fixed rod, and one end of the fixed rod is connected to the nozzle.

[0014] In this way, the gas energy shock wave soot blowing equipment blows out high-energy gas which is transported from the air guide pipe to the fixed pipe, and then transported to the nozzle by the fixed pipe. The jet pipe on the outer wall of the nozzle sprays high-energy gas around the inner wall of the pulverized coal boiler, so that the dust attached to the inner wall of the pulverized coal boiler falls off.

[0015] As a further solution of the present invention: a connecting frame is fixedly installed on the outer wall of the dust hood, and the bottom end of the connecting frame is fixedly installed on the top of the fixing seat, a raised portion is fixedly connected to one end of the outer wall of the dust hood, the dust suction pipe is fixedly connected to the bottom end of the raised portion, a shaft seat is fixedly installed inside the raised portion, the fan shaft is rotatably connected to the shaft seat and the raised portion through a bearing, the second bevel gear is rotatably installed on one end of the outer wall of the raised portion through a rotating shaft and a bearing, the outer wall of the dust suction pipe is fixedly connected to a support seat, and the outer walls of the transmission shaft and the connecting shaft are rotatably connected to the support seat through bearings.

[0016] In this way, the dust hood is fixedly installed on the top of the fixed seat through the connecting frame, so as to support the dust hood to move to one end of the pulverized coal boiler. When the fan shaft drives the fan blades to rotate, the dust hood absorbs the air inside the pulverized coal boiler. Since the two ends of the pulverized coal boiler are in an open and closed state, the air circulates, and the air passing through the inside of the pulverized coal boiler carries the dust into the raised part, and then enters the dust suction pipe, and the dust-containing gas is transported to the dust filter bag through the dust filter bag. After the dust is filtered by the dust filter bag, the gas is discharged to the external environment.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: by arranging a transmission mechanism, a dust cleaning mechanism and a dust suction mechanism, the nozzle can be reciprocated along the inside of the pulverized coal boiler, and high-energy gas can be sprayed to suspend the dust attached to the inner wall of the pulverized coal boiler, and the fan blades can be rotated to absorb the air containing dust in the pulverized coal boiler into the dust suction pipe, and then the dust is filtered by the dust filter bag and discharged to the external environment. This is convenient and fast, greatly improves the ash removal efficiency of the pulverized coal boiler, and greatly reduces the labor intensity. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the present invention;

[0019] Figure 2 It is a structural schematic diagram of the present invention in a dust cleaning state;

[0020] Figure 3 For the present invention Figure 2 A in the enlarged view;

[0021] Figure 4 It is a schematic diagram of the connection between the dust cleaning mechanism, the transmission mechanism and the dust collecting mechanism of the present invention;

[0022] Figure 5 For the present invention Figure 4 The enlarged view of point B in the figure;

[0023] Figure 6 For the present invention Figure 4 The enlarged view of point C in the figure;

[0024] Figure 7 It is a cross-sectional view of some parts of the dust collecting mechanism of the present invention and a cross-sectional view of the fixing rod;

[0025] Figure 8 For the present invention Figure 7 The enlarged view of point D in the figure;

[0026] Fig. 9 It is a structural cross-sectional view of the nozzle of the present invention.

[0027] In the figure: 1. pulverized coal boiler; 2. movable frame; 3. fixed seat; 4. cleaning mechanism; 401. reciprocating screw; 402. transmission seat; 403. fixed rod; 404. nozzle; 405. air guide pipe; 406. gas energy shock wave soot blowing equipment; 5. dust suction mechanism; 501. dust hood; 502. dust suction pipe; 503. dust filter bag; 504. fan blade; 505. fan shaft; 6. transmission mechanism; 601. motor; 602. transmission shaft; 603. worm; 604. worm wheel; 605. internal gear ring; 606. spur gear; 607. first bevel gear; 608. second bevel gear; 609. third bevel gear; 7. connecting shaft; 8. fixed pipe; 9. support rod; 10. first roller. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] The motor (YS-90L14) mentioned in the present invention can be obtained in the market or by private order.

[0030] See also Figures 1 to 9In an embodiment of the present invention, a slagging prevention system for a pulverized coal boiler includes a pulverized coal boiler 1, a movable frame 2 is installed at one end of the pulverized coal boiler 1, a fixed seat 3 is fixedly installed at the top of the movable frame 2, a ash cleaning mechanism 4 for cleaning the inner wall of the pulverized coal boiler 1 is arranged inside the fixed seat 3, a dust suction mechanism 5 for removing dust from the pulverized coal boiler 1 is arranged at one end of the pulverized coal boiler 1, and a transmission mechanism 6 is arranged at one end of the movable frame 2; the ash cleaning mechanism 4 includes a reciprocating screw rod 401 rotatably installed inside the fixed seat 3, a transmission seat 402 is sleeved on the outer wall of the reciprocating screw rod 401, and the top of the transmission seat 402 is fixedly mounted. A connecting seat is fixedly welded, one end of the connecting seat is fixedly installed with a fixing rod 403, one end of the fixing rod 403 is fixedly installed with a nozzle 404, one end of the nozzle 404 is fixedly connected with a fixing pipe 8, and the end of the fixing pipe 8 away from the nozzle 404 is connected with an air guide pipe 405, and a gas energy shock wave soot blowing device 406 is fixedly installed on one side of the outer wall of the mobile frame 2, and the bottom end of the air guide pipe 405 is connected and connected with the output end of the gas energy shock wave soot blowing device 406, and the dust collection mechanism 5 includes a dust collection hood 501 installed at one end of the pulverized coal boiler 1, and the bottom end of the dust collection hood 501 is connected with a dust collection pipe 502, and the bottom end of the dust collection pipe 502 is connected to the dust collection pipe 502. The end is connected to a dust filter bag 503, a fan blade 504 is rotatably installed inside the dust cover 501, one end of the fan blade 504 is fixedly connected to a fan shaft 505, and the fan shaft 505 penetrates to the outside of the dust cover 501, and a through groove is opened inside the dust cover 501, and the inner wall of the through groove matches the outer wall of the fixed rod 403. The transmission mechanism 6 includes a motor 601 fixedly installed on one side of the outer wall of the fixed seat 3, and the output end of the motor 601 is connected to a transmission shaft 602. The outer wall of the transmission shaft 602 is located at one end of the fixed seat 3 and is fixedly sleeved with a worm 603, and one end of the reciprocating screw 401 is located at the worm 60 3 is fixedly connected with a worm gear 604 at the bottom end, the worm 603 and the worm gear 604 are meshed with each other, the outer wall of the transmission shaft 602 is located at one end of the dust cover 501 and is fixedly sleeved with an internal gear ring 605, the inner wall of the worm gear 604 is meshed with a spur gear 606, one end of the spur gear 606 is fixedly connected with a connecting shaft 7, one end of the connecting shaft 7 is fixedly connected with a first bevel gear 607, one end of the outer wall of the first bevel gear 607 is meshed with a second bevel gear 608, the top end of the second bevel gear 608 is meshed with a third bevel gear 609, and the third bevel gear 609 is fixedly welded to one end of the fan shaft 505.

[0031] In this embodiment: the movable frame 2 is moved to one side of one end of the pulverized coal boiler 1, and the dust cover 501 is aligned with one end of the pulverized coal boiler 1, and then the motor 601 is started to drive the transmission shaft 602 to rotate, so that the transmission shaft 602 drives the worm 603 to rotate, and the worm 603 drives the worm wheel 604 to rotate, so that the worm wheel 604 drives the reciprocating screw 401, and the transmission seat 402 moves along the outer wall of the reciprocating screw 401, so that the transmission seat 402 drives the connecting seat to move, and drives the fixed rod 403 to move through the connecting seat, so that the fixed rod 403 drives the nozzle 404 to move toward the inside of the pulverized coal boiler 1, so that the gas energy shock wave soot blowing device 406 sprays high-energy gas , the high-energy gas is transported from the air guide pipe 405 to the fixed pipe 8, so that the fixed pipe 8 transports the high-energy gas to the nozzle 404, so that the nozzle 404 cleans the inner wall of the pulverized coal boiler 1. At the same time, the transmission shaft 602 rotates to drive the inner gear ring 605 to rotate, so that the inner gear ring 605 drives the spur gear 606 to rotate, and the spur gear 606 drives the connecting shaft 7 to rotate, so that the connecting shaft 7 drives the first bevel gear 607 to rotate, and the first bevel gear 607 drives the second bevel gear 608 to rotate. At the same time, the second bevel gear 608 drives the third bevel gear 609 to rotate, so that the third bevel gear 609 drives the fan shaft 505 to rotate, so that the fan shaft 505 The fan blades 504 are driven to rotate, so that the dust raised inside the pulverized coal boiler 1 is sucked into the dust suction pipe 502 along the air flow, and the air flow is discharged to the outside after filtering the dust through the dust filter bag 503. Through the mutual cooperation of the above parts, the nozzle 404 moves back and forth along the inside of the pulverized coal boiler 1, and sprays high-energy gas to suspend the dust attached to the inner wall of the pulverized coal boiler 1. The fan blades 504 rotate, so that the air containing dust in the pulverized coal boiler 1 is absorbed into the dust suction pipe 502, and then the dust is filtered by the dust filter bag 503 and discharged to the external environment. It is convenient and fast, and the ash removal efficiency of the pulverized coal boiler 1 is greatly improved, thereby effectively preventing the pulverized coal boiler 1 from Slag formation, it should be noted that the gas energy shock wave sootblower equipment 406 in this example is a gas energy shock wave sootblower in the prior art, which is a device that generates shock waves from compressed gas through a shock wave generator. The main body of the shock wave tube group inside the gas energy shock wave sootblower is a high-pressure section and a low-pressure section. The tube body is divided into two sections of high and low pressure by a diaphragm made of annealed aluminum film. The high-pressure gas source comes from an air compressor or a high-pressure gas cylinder. When the pressure in the high-pressure section gradually rises, the diaphragm is gradually deformed by the pressure until it ruptures. After the diaphragm ruptures, the high-pressure gas pushes the low-pressure section gas forward, and the front of the moving gas forms a clean discontinuous surface, which is called a shock wave in aerodynamics.

[0032] Please refer to Figure 1 , Figure 6 and Figure 7 A support rod 9 is fixedly installed at the bottom end of the fixed rod 403. The support rod 9 is located at one end of the fixed rod 403 close to the nozzle 404. First rollers 10 are rotatably installed on both sides of the outer wall of the bottom end of the support rod 9.

[0033] In this embodiment: when the nozzle 404 moves into the pulverized coal boiler 1, the bottom end of the first roller 10 contacts the bottom end of the inner wall of the pulverized coal boiler 1, thereby supporting the support rod 9 and the first roller 10 to one end of the fixed rod 403, so that the nozzle 404 can move stably in the pulverized coal boiler 1.

[0034] Please refer to Figure 1 , Figure 2 A plurality of second rollers are rotatably mounted on the inner bottom end of the movable frame 2, a device seat is fixedly welded on one side of the outer wall of the movable frame 2, and the gas energy shock wave soot blowing device 406 is fixedly mounted on the top of the device seat through a fixed frame, and a plurality of third rollers are rotatably mounted on one side of the outer wall of the device.

[0035] In this embodiment: the mobile frame 2 is supported by a plurality of second rollers to facilitate the movement and transportation of the mobile frame 2, the air energy shock wave soot blowing equipment 406 is fixedly installed on one side of the outer wall of the mobile frame 2 through the equipment seat, and the equipment seat is supported by the third roller, so that the mobile frame 2 is stably placed and can support the movement of the equipment seat.

[0036] Please refer to Figure 1 , Figure 4 The reciprocating screw rod 401 is rotatably connected to the fixed seat 3 through a bearing, one end of the reciprocating screw rod 401 penetrates one end of the outer wall of the fixed seat 3, a rotatable crescent pin is provided inside the transmission seat 402, and fourth rollers are rotatably installed on both sides of the outer wall of the transmission seat 402, and the bottom end of the fourth roller contacts the bottom end of the inner wall of the fixed seat 3.

[0037] In this embodiment, when the reciprocating screw 401 rotates, the transmission seat 402 moves along the outer wall of the reciprocating screw 401, and by arranging fourth rollers on both sides of the outer wall of the transmission seat 402, the contact friction between the transmission seat 402 and the fixed seat 3 is reduced, thereby reducing wear.

[0038] Please refer to Figure 4 , Figure 6 and Fig. 9 The outer wall of the nozzle 404 is connected with a plurality of jet pipes, which are arranged at equal angles in a circle. The fixed pipe 8 is fixedly installed inside the fixed rod 403, and one end of the fixed rod 403 is connected with the nozzle 404.

[0039] In this embodiment: the gas energy shock wave sootblowing equipment 406 blows out high-energy gas which is transported to the fixed pipe 8 through the air guide pipe 405, and the fixed pipe 8 transports the gas to the nozzle 404, so that the jet pipe on the outer wall of the nozzle 404 sprays high-energy gas to the inner wall of the pulverized coal boiler 1 around, so that the dust attached to the inner wall of the pulverized coal boiler 1 falls off.

[0040] Please refer to Figure 4A connecting frame is fixedly installed on the outer wall of the dust hood 501, and the bottom end of the connecting frame is fixedly installed on the top of the fixing seat 3. A raised portion is fixedly connected to one end of the outer wall of the dust hood 501, and the dust collection pipe 502 is fixedly connected to the bottom end of the raised portion. A shaft seat is fixedly installed inside the raised portion. The fan shaft 505 is rotatably connected to the shaft seat and the raised portion through a bearing. The second bevel gear 608 is rotatably installed on one end of the outer wall of the raised portion through a rotating shaft and a bearing. The outer wall of the dust collection pipe 502 is fixedly connected to a support seat, and the outer walls of the transmission shaft 602 and the connecting shaft 7 are rotatably connected to the support seat through bearings.

[0041] In this embodiment: the dust hood 501 is fixedly installed on the top of the fixing seat 3 through the connecting frame, so as to support the dust hood 501 to move to one end of the pulverized coal boiler 1, so that the fan shaft 505 drives the fan blades 504 to rotate, so that the dust hood 501 absorbs the air inside the pulverized coal boiler 1. Since the two ends of the pulverized coal boiler 1 are in an open and closed state, the air circulates, and the air inside the pulverized coal boiler 1 carries the dust into the raised part, and then enters the dust suction pipe 502. The dust-containing gas is transported to the dust filter bag 503 through the dust suction pipe 502. After the dust is filtered by the dust filter bag 503, the gas is discharged to the external environment.

[0042] Please refer to Figure 1 , Figure 6 and Figure 7 A support rod 9 is fixedly installed at the bottom end of the fixed rod 403. The support rod 9 is located at one end of the fixed rod 403 close to the nozzle 404. First rollers 10 are rotatably installed on both sides of the outer wall of the bottom end of the support rod 9.

[0043] In this embodiment: when the nozzle 404 moves into the pulverized coal boiler 1, the bottom end of the first roller 10 contacts the bottom end of the inner wall of the pulverized coal boiler 1, thereby supporting the support rod 9 and the first roller 10 to one end of the fixed rod 403, so that the nozzle 404 can move stably in the pulverized coal boiler 1.

[0044] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A pulverized coal boiler anti-slagging system, comprising a pulverized coal boiler (1), characterized in that: A movable frame (2) is installed at one end of the pulverized coal boiler (1); a fixed seat (3) is fixedly installed at the top of the movable frame (2); a cleaning mechanism (4) for cleaning the inner wall of the pulverized coal boiler (1) is arranged inside the fixed seat (3); a dust collecting mechanism (5) for removing dust from the pulverized coal boiler (1) is arranged at one end of the pulverized coal boiler (1); and a transmission mechanism (6) is arranged at one end of the movable frame (2); The dust cleaning mechanism (4) comprises a reciprocating screw rod (401) rotatably mounted inside the fixed seat (3); the outer wall of the reciprocating screw rod (401) is sleeved with a transmission seat (402); a connecting seat is fixedly welded to the top of the transmission seat (402); a fixing rod (403) is fixedly mounted on one end of the connecting seat; a nozzle (404) is fixedly mounted on one end of the fixing rod (403); a fixing pipe (8) is fixedly connected to one end of the nozzle (404); an end of the fixing pipe (8) away from the nozzle (404) is connected to an air guide pipe (405); a gas energy shock wave dust blowing device (406) is fixedly mounted on one side of the outer wall of the movable frame (2); and the bottom end of the air guide pipe (405) is connected to the output end of the gas energy shock wave dust blowing device (406); The dust collection mechanism (5) comprises a dust collection hood (501) installed at one end of the pulverized coal boiler (1), the bottom end of the dust collection hood (501) is connected to a dust collection pipe (502), the bottom end of the dust collection pipe (502) is connected to a dust filter bag (503), a fan blade (504) is rotatably installed inside the dust collection hood (501), one end of the fan blade (504) is fixedly connected to a fan shaft (505), the fan shaft (505) penetrates to the outside of the dust collection hood (501), and a through groove is opened inside the dust collection hood (501), and the inner wall of the through groove matches the outer wall of the fixing rod (403); The transmission mechanism (6) comprises a motor (601) fixedly mounted on one side of the outer wall of the fixing seat (3); the output end of the motor (601) is connected to a transmission shaft (602); the outer wall of the transmission shaft (602) is located at one end of the fixing seat (3); a worm (603) is fixedly sleeved thereon; one end of the reciprocating screw (401) is located at the bottom end of the worm (603) and is fixedly connected to a worm wheel (604); the worm (603) and the worm wheel (604) are meshed with each other; the outer wall of the transmission shaft (602) is located at the dust cover (501); ) is fixedly sleeved with an internal gear ring (605), the inner wall of the worm gear (604) is meshingly connected with a spur gear (606), one end of the spur gear (606) is fixedly connected with a connecting shaft (7), one end of the connecting shaft (7) is fixedly connected with a first bevel gear (607), one end of the outer wall of the first bevel gear (607) is meshingly connected with a second bevel gear (608), the top end of the second bevel gear (608) is meshingly connected with a third bevel gear (609), and the third bevel gear (609) is fixedly welded to one end of the fan shaft (505).

2. The anti-slagging system for a pulverized coal boiler according to claim 1, characterized in that: A support rod (9) is fixedly mounted on the bottom end of the fixed rod (403), and the support rod (9) is located at one end of the fixed rod (403) close to the spray head (404). First rollers (10) are rotatably mounted on both sides of the outer wall of the bottom end of the support rod (9).

3. The anti-slagging system for a pulverized coal boiler according to claim 1, characterized in that: A plurality of second rollers are rotatably mounted on the inner bottom end of the movable frame (2), a device seat is fixedly welded to one side of the outer wall of the movable frame (2), the gas energy shock wave soot blowing device (406) is fixedly mounted on the top of the device seat via a fixed frame, and a plurality of third rollers are rotatably mounted on one side of the outer wall of the device.

4. The anti-slagging system for a pulverized coal boiler according to claim 1, characterized in that: The reciprocating screw rod (401) is rotatably connected to the fixed seat (3) via a bearing, one end of the reciprocating screw rod (401) penetrates one end of the outer wall of the fixed seat (3), a rotatable crescent pin is provided inside the transmission seat (402), and fourth rollers are rotatably mounted on both sides of the outer wall of the transmission seat (402), and the bottom end of the fourth roller is in contact with the bottom end of the inner wall of the fixed seat (3).

5. The anti-slagging system for a pulverized coal boiler according to claim 1, characterized in that: The outer wall of the nozzle (404) is connected to a plurality of jet pipes, which are arranged at equal angles in a circle. The fixed pipe (8) is fixedly installed inside the fixed rod (403), and one end of the fixed rod (403) is connected to the nozzle (404).

6. The anti-slagging system for a pulverized coal boiler according to claim 1, characterized in that: A connecting frame is fixedly mounted on the outer wall of the dust hood (501), the bottom end of the connecting frame is fixedly mounted on the top end of the fixing seat (3), one end of the outer wall of the dust hood (501) is fixedly connected to a raised portion, and the dust suction pipe (502) is fixedly connected to the bottom end of the raised portion.

7. The anti-slagging system for a pulverized coal boiler according to claim 6, characterized in that: A shaft seat is fixedly installed inside the raised portion, the fan shaft (505) is rotatably connected to the shaft seat and the raised portion via a bearing, the second bevel gear (608) is rotatably installed on one end of the outer wall of the raised portion via a rotating shaft and a bearing, the outer wall of the dust suction pipe (502) is fixedly connected to a support seat, and the outer walls of the transmission shaft (602) and the connecting shaft (7) are rotatably connected to the support seat via a bearing.

Images