A soot blower for a waste heat boiler

Abstract

This invention relates to the field of sootblower technology, and more particularly to a sootblower for a waste heat boiler. The sootblower includes a housing, with a support rod on the inner wall of the housing. A protective cover is provided at the end of the support rod, and a driving component is housed within the protective cover. A rotating shaft is located at the driving end of the driving component. A square groove is formed at the end of the rotating shaft, and a square rod is movably mounted within the groove. A turntable is located at the end of the square rod, and a rubber sheet is provided on the outer wall of the turntable. A steam guide pipe is fixedly installed through one side of the housing's outer wall, and a one-way valve is provided on the outer wall of the steam guide pipe. A sootblowing pipe is fixedly installed through the other side of the housing's outer wall, and a steam inlet corresponding to the sootblowing pipe is formed on the outer wall of the turntable. This invention rapidly releases high-pressure steam from the housing to the sootblowing pipe, and the sootblowing assembly allows the steam to be ejected instantaneously at high pressure, effectively removing stubborn ash and slag buildup on the inner wall of the heat exchange pipes, resulting in superior performance.

Description

Technical Field

[0001] This invention relates to the field of soot blower technology, and more particularly to a soot blower for a waste heat boiler. Background Technology

[0002] When a waste heat boiler is performing heat exchange operations, the flue gas is generally introduced into the heat exchange pipes for heat exchange. However, the flue gas is prone to accumulating ash, coke, and slag in the heat exchange pipes. This ash and slag not only affects the heat exchange effect but also poses safety risks such as tube rupture. In order to improve thermal efficiency and reduce safety risks such as tube rupture, most waste heat boilers are equipped with soot blowers in the heat exchange pipes to remove the accumulated ash.

[0003] Currently, existing soot blowers still have certain shortcomings. During use, the soot blowing intensity of the soot blowers is limited. When there are stubborn coke and slag deposits in the heat exchange pipes, it is difficult to remove them by traditional air blowers. Therefore, it is urgent to design a soot blower for waste heat boilers to solve the above problems. Summary of the Invention

[0004] The purpose of this invention is to address the deficiencies in the existing technology by proposing a soot blower for a waste heat boiler.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A soot blower for a waste heat boiler includes a housing. A support rod is provided on the inner wall of the housing, and a protective cover is provided at the end of the support rod. A driving component is provided within the protective cover, and a rotating shaft is provided at the driving end of the driving component. A square groove is formed at the end of the rotating shaft, and a square rod is movably disposed within the square groove. A turntable is provided at the end of the square rod, and a rubber sheet is provided on the outer wall of the turntable. A steam guide pipe is fixedly installed through one side of the outer wall of the housing, and a one-way valve is provided on the outer wall of the steam guide pipe. A soot blowing pipe is fixedly installed through the other side of the outer wall of the housing, and a steam guide port corresponding to the soot blowing pipe is formed on the outer wall of the turntable. The device also includes:

[0007] A supporting mechanism is provided on the inner wall of the housing to ensure that the turntable fits tightly against the inner wall of the housing.

[0008] A soot blowing assembly is disposed on the outer wall of a soot blowing pipe, used to allow steam in the soot blowing pipe to be ejected by means of the soot blowing assembly;

[0009] A drainage mechanism, located at the bottom of the tank, is used to drain the liquid accumulated in the tank.

[0010] A pressure relief mechanism is connected to the housing and is used to release some steam when the air pressure inside the housing is too high.

[0011] As a further embodiment of the present invention: the supporting mechanism includes mounting frames that are evenly distributed in a ring on one side of the inner wall of the box. A movable rod is movably provided through the outer wall of the mounting frame. A fixing plate is provided at one end of the movable rod, and a roller is provided at the other end of the movable rod. An elastic element is sleeved on the outer side of the movable rod. One end of the elastic element is connected to the outer wall of the fixing plate, and the other end of the elastic element is connected to the outer wall of the mounting frame. The roller is in contact with the outer wall of the turntable.

[0012] As a further embodiment of the present invention: the soot blowing assembly includes a rotating cylinder equidistantly disposed on the outside of the soot blowing tube, the inner wall of the soot blowing tube having vent holes corresponding to the rotating cylinder, and the outer wall of the rotating cylinder having nozzles equidistantly and annularly distributed, and the nozzles being V-shaped.

[0013] As a further embodiment of the present invention: both outer walls of the rotating drum are provided with annular grooves, and a limiting disk is rotatably arranged in the annular grooves. The limiting disk and the soot blowing pipe are connected by a connecting rod.

[0014] As a further embodiment of the present invention: the driving component is connected to a switch via a wire, and the switch is electrically connected to a controller.

[0015] As a further embodiment of the present invention: the drainage mechanism includes a drainage cylinder that is fixedly disposed through the bottom outer wall of the box body, and a sealing cap is threadedly provided at the end of the drainage cylinder. A sealing plug is provided on the inner wall of the sealing cap, and a top rod is provided on the inner wall of the sealing plug. The end of the top rod is located in the box body. A fixing cylinder is provided on the inner wall of the box body, and a lifting rod is connected to the inner wall of the fixing cylinder through an elastic element. A closing plate corresponding to the top rod is provided at the end of the lifting rod, and a sealing gasket is provided on the outer wall of the closing plate.

[0016] As a further embodiment of the present invention: the pressure relief mechanism includes a pressure relief cylinder that is fixedly disposed through the outer wall of the box. The outer walls of the pressure relief cylinder are provided with exhaust holes. A movable rod is movably disposed through the top outer wall of the pressure relief cylinder. A piston is disposed at the end of the movable rod and the piston is located in the pressure relief cylinder. An elastic element two is sleeved on the outside of the movable rod. One end of the elastic element two is connected to the outer wall of the piston, and the other end of the elastic element two is connected to the inner wall of the pressure relief cylinder.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] This invention provides a soot blower for a waste heat boiler. When soot removal is required, a soot blowing pipe can be inserted into the heat exchange pipe of the waste heat boiler. Steam can then be introduced into the housing through a steam guide pipe. Simultaneously, under the action of a supporting mechanism, a turntable can block the soot blowing pipe. Furthermore, under the action of a one-way valve, as steam continuously enters the housing, the air pressure inside the housing continuously increases. At this point, a driving component can drive a rotating shaft to rotate, which in turn drives a square rod to rotate, which in turn drives a turntable to rotate, aligning the steam guide port on the turntable with the soot blowing pipe. At this time, the high pressure inside the housing... Steam can be quickly released into the sootblowing pipe and sprayed out at high pressure by the sootblowing components, which can effectively remove stubborn ash and slag from the inner wall of the heat exchange pipe, resulting in better performance. At the same time, when the steam is introduced into the steam pipe at a high rate and the steam in the box is not discharged in time, causing the air pressure in the box to be too high, the pressure relief mechanism can automatically perform a pressure relief operation, making the use of the sootblower safer. Furthermore, when some steam condenses into liquid and remains in the box, the liquid can be drained away in time by the liquid drainage mechanism, making it very convenient to use. Attached Figure Description

[0019] Figure 1 This is a cross-sectional structural schematic diagram of a soot blower for a waste heat boiler provided in an embodiment of the present invention;

[0020] Figure 2 A schematic diagram of the supporting mechanism of a soot blower in a waste heat boiler provided in an embodiment of the present invention;

[0021] Figure 3 A schematic diagram of the soot blowing assembly structure of a waste heat boiler provided in an embodiment of the present invention;

[0022] Figure 4 This is a side view of the rotating drum structure of a soot blower for a waste heat boiler, provided in an embodiment of the present invention.

[0023] Figure 5 A schematic diagram of the pressure relief mechanism of a soot blower for a waste heat boiler provided in an embodiment of the present invention;

[0024] Figure 6 A schematic diagram of the liquid discharge mechanism of a soot blower for a waste heat boiler provided in an embodiment of the present invention;

[0025] Figure 7 This is an enlarged structural diagram of the drain cylinder of a soot blower for a waste heat boiler, provided as an embodiment of the present invention.

[0026] In the diagram: 1-Box body, 2-One-way valve, 3-Steam pipe, 4-Drainage mechanism, 5-Protective cover, 6-Drive component, 7-Rotating shaft, 8-Square rod, 9-Soot blowing pipe, 10-Soot blowing assembly, 11-Rubber sheet, 12-Turntable, 13-Steam inlet, 14-Supporting mechanism, 15-Support rod, 16-Pressure relief mechanism, 17-Mounting bracket, 18-Moving rod, 19-Fixed plate, 20-Elastic component 1, 2 1-Roller, 22-Ventilation hole, 23-Rotating drum, 24-Nozzle, 25-Connecting rod, 26-Limiting plate, 27-Pressure relief cylinder, 28-Exhaust hole, 29-Piston, 30-Moving rod, 31-Elastic component two, 32-Fixed cylinder, 33-Elastic component three, 34-Lifting rod, 35-Sealing plate, 36-Sealing gasket, 37-Drainage cylinder, 38-Sealing cover, 39-Sealing plug, 40-Top rod. Implementation

[0027] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0028] like Figure 1 As shown, an embodiment of the present invention provides a soot blower for a waste heat boiler, including a housing 1. A support rod 15 is provided on the inner wall of the housing 1, and a protective cover 5 is provided at the end of the support rod 15. A driving component 6 is provided in the protective cover 5. The specific structure of the driving component 6 is not limited. In this embodiment, preferably, the driving component 6 is a stepper motor, and a rotating shaft 7 is provided at the driving end of the driving component 6. A square groove is opened at the end of the rotating shaft 7, and a square rod 8 is movably arranged in the square groove. A turntable 12 is provided at the end of the square rod 8, and a rubber sheet 11 is provided on the outer wall of the turntable 12. A steam guide pipe 3 is fixedly installed through one side of the outer wall of the housing 1, and a one-way valve 2 is provided on the outer wall of the steam guide pipe 3. A soot blowing pipe 9 is fixedly installed through the other side of the outer wall of the housing 1, and a steam guide port 13 corresponding to the soot blowing pipe 9 is opened on the outer wall of the turntable 12. The device also includes:

[0029] The abutting mechanism 14 is disposed on the inner wall of the housing 1 and is used to make the turntable 12 fit tightly against the inner wall of the housing 1.

[0030] Soot blowing assembly 10 is disposed on the outer wall of soot blowing pipe 9 and is used to allow steam in soot blowing pipe 9 to be ejected by soot blowing assembly 10.

[0031] Drainage mechanism 4 is located at the bottom of the tank 1 and is used to drain the liquid accumulated in the tank 1.

[0032] The pressure relief mechanism 16 is connected to the housing 1 and is used to release some steam when the air pressure inside the housing 1 is too high.

[0033] When ash removal is required, the soot blowing pipe 9 can be inserted into the heat exchange pipe of the waste heat boiler. Steam can then be introduced into the housing 1 through the steam pipe 3. Simultaneously, the supporting mechanism 14 causes the turntable 12 to block the soot blowing pipe 9. Under the action of the one-way valve 2, as steam continuously enters the housing 1, the air pressure inside the housing 1 continuously increases. At this point, the driving component 6 can drive the rotating shaft 7 to rotate, which in turn drives the square rod 8 to rotate. The square rod 8 then drives the turntable 12 to rotate, aligning the steam inlet 13 on the turntable 12 with the soot blowing pipe 9. At this time, the high-pressure steam in the housing 1... Steam can be quickly released to the soot blowing pipe 9 and sprayed out quickly and under high pressure with the help of the soot blowing assembly 10, which can effectively remove stubborn ash and slag from the inner wall of the heat exchange pipe, resulting in better performance. At the same time, when the steam introduced into the steam pipe 3 is too fast and the steam in the box 1 is not discharged in time, resulting in excessively high air pressure in the box 1, the pressure relief mechanism 16 can automatically perform pressure relief operation, making the use of the soot blower safer. Furthermore, when some steam condenses into liquid and remains in the box 1, the liquid can be drained away in time through the liquid drainage mechanism 4, making it very convenient to use.

[0034] As one embodiment of the present invention, please refer to Figure 2 The supporting mechanism 14 includes mounting brackets 17 arranged in a ring at equal intervals on one side of the inner wall of the housing 1. A movable rod 18 is movably disposed through the outer wall of the mounting bracket 17. A fixing piece 19 is provided at one end of the movable rod 18, and a roller 21 is provided at the other end of the movable rod 18. An elastic element 20 is sleeved on the outer side of the movable rod 18. The specific structure of the elastic element 20 is not limited. In this embodiment, preferably, the elastic element 20 is a spring. One end of the elastic element 20 is connected to the outer wall of the fixing piece 19, and the other end of the elastic element 20 is connected to the outer wall of the mounting bracket 17. The roller 21 is in contact with the outer wall of the turntable 12. Under the elastic force of the elastic element 20, the roller 21 at the end of the movable rod 18 can abut against the outer wall of the turntable 12, ensuring a tight fit between the turntable 12 and the inner wall of the housing 1, resulting in better performance.

[0035] As one embodiment of the present invention, please refer to Figure 3 and Figure 4 The soot blowing assembly 10 includes a rotating drum 23 equidistantly arranged on the outside of the soot blowing pipe 9. The inner wall of the soot blowing pipe 9 is provided with vent holes 22 corresponding to the rotating drum 23. The outer wall of the rotating drum 23 is fixedly provided with nozzles 24 equidistantly distributed in a ring shape. The nozzles 24 are V-shaped. When steam is introduced into the rotating drum 23 through the vent holes 22, it can be sprayed out through the nozzles 24 to realize the soot blowing operation on the inner wall of the heat exchange pipe. Since the nozzles 24 are V-shaped, when the steam is sprayed out through the nozzles 24, it can also cause the rotating drum 23 to rotate, making the soot blowing more uniform and the use effect better.

[0036] As one embodiment of the present invention, please refer to Figure 3 and Figure 4 Both sides of the outer wall of the rotating drum 23 are provided with annular grooves, and a limiting disk 26 is rotatably installed in the annular grooves. The limiting disk 26 and the soot blowing pipe 9 are connected by a connecting rod 25. Under the limiting action of the limiting disk 26, the rotation process of the rotating drum 23 can be more stable and the use effect is better.

[0037] In one embodiment of the present invention, the drive unit 6 is connected to a switch via a wire, and the switch is electrically connected to a controller. The specific structure of the controller is not limited. In this embodiment, preferably, the controller is a microprogrammed controller.

[0038] As one embodiment of the present invention, please refer to Figure 6 and Figure 7 The drainage mechanism 4 includes a drainage cylinder 37 that is fixedly installed through the bottom outer wall of the housing 1. A sealing cap 38 is threaded onto the end of the drainage cylinder 37. A sealing plug 39 is installed on the inner wall of the sealing cap 38, and a push rod 40 is installed on the inner wall of the sealing plug 39. The end of the push rod 40 is located within the housing 1. A fixing cylinder 32 is installed on the inner wall of the housing 1, and a lifting rod 34 is connected to the inner wall of the fixing cylinder 32 via an elastic element 33. The specific structure of the elastic element 33 is not limited. In this embodiment, preferably, the elastic element 33 is a spring, and the end of the lifting rod 34 is provided with a sealing cap corresponding to the push rod 40. The sealing plate 35 is provided with a sealing gasket 36 on its outer wall. When the sealing cover 38 is located at the end of the drain cylinder 37, the push rod 40 is in the state of lifting the sealing plate 35. At this time, the accumulated liquid in the box 1 can automatically flow into the drain cylinder 37. When it is necessary to drain the liquid in the drain cylinder 37, the sealing cover 38 can be rotated off. At this time, the end of the push rod 40 moves into the drain cylinder 37 first. Under the elastic force of the elastic element 33, the lifting rod 34 can drive the sealing plate 35 to move down and block the drain cylinder 37, so that the soot blower can operate normally during the cleaning of accumulated liquid and the use effect is better.

[0039] As one embodiment of the present invention, please refer to Figure 5The pressure relief mechanism 16 includes a pressure relief cylinder 27 that is fixedly installed through the outer wall of the housing 1. Exhaust holes 28 are provided on all four sides of the outer wall of the pressure relief cylinder 27. A movable rod 30 is movably installed through the top outer wall of the pressure relief cylinder 27. A piston 29 is provided at the end of the movable rod 30 and is located inside the pressure relief cylinder 27. An elastic element 31 is sleeved on the outside of the movable rod 30. The specific structure of the elastic element 31 is not limited. In this embodiment, preferably, the elastic element 31 is a spring. One end of the elastic element 31 and the piston 29... The outer wall is connected, and the other end of the elastic element 21 is connected to the inner wall of the pressure relief cylinder 27. When the air pressure in the box 1 is too high, it will cause the piston 29 to move in the pressure relief cylinder 27 and continuously compress the elastic element 21 until the exhaust hole 28 leaks out. At this point, some of the steam in the box 1 can be discharged through the exhaust hole 28. When the air pressure in the box 1 returns to a safe level, the piston 29 can re-seal the exhaust hole 28 under the elastic force of the elastic element 21, which effectively improves the safety performance during use and makes the use effect better.

[0040] When cleaning is required, the soot blowing pipe 9 can be inserted into the heat exchange pipe of the waste heat boiler. Steam can then be introduced into the housing 1 through the steam pipe 3. Simultaneously, the supporting mechanism 14 causes the turntable 12 to block the soot blowing pipe 9. Under the action of the one-way valve 2, as steam continuously enters the housing 1, the air pressure inside the housing 1 continuously increases. At this time, the driving component 6 can drive the rotating shaft 7 to rotate, which in turn drives the square rod 8 to rotate. The square rod 8 then drives the turntable 12 to rotate, aligning the steam inlet 13 on the turntable 12 with the soot blowing pipe 9. At this point, the high pressure inside the housing 1... High-pressure steam can be quickly released to the sootblowing pipe 9 and sprayed out rapidly under high pressure with the help of the sootblowing assembly 10. This can effectively remove stubborn ash and slag from the inner wall of the heat exchange pipe, resulting in better performance. At the same time, when the steam introduced into the steam pipe 3 is too fast and the steam in the box 1 is not discharged in time, causing the air pressure in the box 1 to be too high, the pressure relief mechanism 16 can automatically perform pressure relief operation, making the use of the sootblower safer. Furthermore, when some steam condenses into liquid and remains in the box 1, the liquid can be drained away in time through the liquid drainage mechanism 4, making it very convenient to use.

[0041] It should be noted that although this specification describes the embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A soot blower for a waste heat boiler, comprising a housing, characterized in that, The inner wall of the housing is provided with a support rod, and the end of the support rod is provided with a protective cover. A driving component is provided within the protective cover, and the driving end of the driving component is provided with a rotating shaft. A square groove is formed at the end of the rotating shaft, and a square rod is movably mounted in the square groove. A turntable is provided at the end of the square rod, and a rubber sheet is provided on the outer wall of the turntable. A steam guide pipe is fixedly installed through one side of the housing's outer wall, and a one-way valve is provided on the outer wall of the steam guide pipe. A soot blowing pipe is fixedly installed through the other side of the housing's outer wall, and a steam guide port corresponding to the soot blowing pipe is formed on the outer wall of the turntable. The housing also includes: A supporting mechanism is provided on the inner wall of the housing to ensure that the turntable fits tightly against the inner wall of the housing. A soot blowing assembly is disposed on the outer wall of a soot blowing pipe, used to allow steam in the soot blowing pipe to be ejected by means of the soot blowing assembly; A drainage mechanism, located at the bottom of the tank, is used to drain the liquid accumulated in the tank. A pressure relief mechanism, which is connected to the housing, is used to release some steam when the pressure inside the housing is too high. The supporting mechanism includes mounting frames that are evenly spaced in a ring on one side of the inner wall of the box. A movable rod is movably installed through the outer wall of the mounting frame. A fixed plate is provided at one end of the movable rod, and a roller is provided at the other end of the movable rod. An elastic element is sleeved on the outer side of the movable rod. One end of the elastic element is connected to the outer wall of the fixed plate, and the other end of the elastic element is connected to the outer wall of the mounting frame. The roller is in contact with the outer wall of the turntable. The drainage mechanism includes a drainage cylinder that is fixedly installed through the bottom outer wall of the box body, and a sealing cap is threaded at the end of the drainage cylinder. A sealing plug is provided on the inner wall of the sealing cap, and a top rod is provided on the inner wall of the sealing plug. The end of the top rod is located in the box body. A fixing cylinder is provided on the inner wall of the box body, and a lifting rod is connected to the inner wall of the fixing cylinder through an elastic element. A closing plate corresponding to the top rod is provided at the end of the lifting rod, and a sealing gasket is provided on the outer wall of the closing plate.

2. The soot blower for a waste heat boiler according to claim 1, characterized in that, The soot blowing assembly includes a rotating cylinder equidistantly arranged on the outside of the soot blowing tube. The inner wall of the soot blowing tube has ventilation holes corresponding to the rotating cylinder. The outer wall of the rotating cylinder is fixedly provided with nozzles equidistantly arranged in a ring shape, and the nozzles are V-shaped.

3. The soot blower for a waste heat boiler according to claim 2, characterized in that, Both sides of the outer wall of the rotating drum are provided with annular grooves, and a limiting disk is rotatably installed in the annular groove. The limiting disk and the soot blowing pipe are connected by a connecting rod.

4. The soot blower for a waste heat boiler according to claim 1, characterized in that, The drive unit is connected to a switch via a wire, and the switch is electrically connected to a controller.

5. The soot blower for a waste heat boiler according to claim 1, characterized in that, The pressure relief mechanism includes a pressure relief cylinder that is fixedly installed through the outer wall of the box. The outer walls of the pressure relief cylinder are provided with exhaust holes. A movable rod is movably installed through the top outer wall of the pressure relief cylinder. A piston is provided at the end of the movable rod and the piston is located in the pressure relief cylinder. An elastic element two is sleeved on the outside of the movable rod. One end of the elastic element two is connected to the outer wall of the piston, and the other end of the elastic element two is connected to the inner wall of the pressure relief cylinder.

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