Boiler soot blower for power plant

Abstract

The utility model relates to the technical field of power plant boilers, in particular to a boiler soot blower for a power plant, which comprises a base and a backflow device, a support is mounted on the surface of the base, a fan is mounted on the surface of the support, a spray pipe is mounted at the driving end of the fan, and the backflow device is arranged on the surface of the spray pipe and comprises a box body. The box body is fixedly connected with the spraying pipe, a rectangular groove is formed in the lower surface of the box body, a dust shielding plate is arranged on the inner wall of the rectangular groove, a fixing rod is fixedly connected to the lower surface of the dust shielding plate, the surface of the fixing rod is sleeved with a rope body, an assembling plate is fixedly connected to the surface of the support, and a motor is fixedly connected to the surface of the assembling plate. The service life of the fan is effectively prolonged, dust backflow can cause abrasion and erosion to an impeller, a rotating shaft and other components of the fan, dust backflow can be reduced, damage can be reduced, the fan can stably operate for a long time, and production interruption and maintenance cost caused by fan faults are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of power plant boilers, in particular to a boiler soot blowing device for power plants. Background Technique

[0002] A boiler soot blower is an important device for cleaning boiler pipes. Its main function is to remove dust and debris accumulated on the heating surface in the boiler pipes. Common types of soot blowers include steam soot blowers, acoustic soot blowers, etc. Different types of soot blowers have their own characteristics and are suitable for different boiler operating conditions and requirements. Installing and using a reasonable soot blower helps ensure the safe and stable operation of the boiler and extends its service life.

[0003] In the prior art, such as the utility model with the publication number CN214664503U, which relates to the field of boiler soot blowers and specifically to a boiler soot blowing device for power plants, including: a base, on the top of which there is a movable plate, and the movable plate is connected to the base through a telescopic frame, and an air inflation pump is installed inside the base; a soot blowing mechanism, which is distributed above the movable plate, and the movable plate and the soot blowing mechanism are connected through at least two groups of support rods; the technical key point is that a base is designed below the soot blowing mechanism, which can move freely, and at the same time, the height of the entire soot blowing mechanism can be adjusted by using the telescopic frame to ensure the flexible use of the entire device; by designing a first airbag and a second airbag on one side of the horn tube, and using the air inflation pump to inflate the corresponding airbag, by changing the length of the first airbag, the position of the opening end of the horn tube can be adjusted; by changing the inflation amount of the second airbag, the outer diameter size of the soot blowing port can be adjusted to cope with the sizes of different boiler connection ports, expanding the application range of the entire device. However, during the use of the device, the nozzle is usually connected to the boiler pipe and soot is blown through a fan. When the fan stops running, the dust is easily affected by the airflow and flows back into the nozzle and then into the fan, easily causing fan failures.

[0004] In order to solve the problem that when the fan stops running, the dust is easily affected by the airflow and flows back into the nozzle and then into the fan, easily causing fan failures, the prior art adopts the method of regular disassembly and maintenance for treatment, but this increases the maintenance difficulty of the equipment, and then leads to the problem of inconvenient use of the equipment. Summary of the Invention

[0005] The purpose of the utility model is to solve the defect in the prior art that when the fan stops running, the dust is easily affected by the airflow and flows back into the nozzle and then into the fan, easily causing fan failures, and to propose a boiler soot blowing device for power plants.

[0006] To achieve the above object, the utility model adopts the following technical solutions: A boiler soot blowing device for a power plant, including a base and a reflux device. A bracket is installed on the surface of the base, a blower is installed on the surface of the bracket, a spray pipe is installed at the driving end of the blower, and the reflux device is arranged on the surface of the spray pipe. The reflux device includes a box body, the box body is fixedly connected to the spray pipe, a rectangular groove is opened on the lower surface of the box body, a dust shield is arranged on the inner wall of the rectangular groove, a fixing rod is fixedly connected to the lower surface of the dust shield, a rope body is sleeved on the surface of the fixing rod, an assembly plate is fixedly connected to the surface of the bracket, and a motor is fixedly connected to the surface of the assembly plate. By setting the reflux device, the service life of the blower is effectively extended. The dust reflux will cause wear and erosion to components such as the impeller and shaft of the blower. Reducing the dust reflux can reduce this kind of damage, enabling the blower to operate stably for a long time and reducing production interruptions and maintenance costs caused by blower failures.

[0007] Preferably, one side of the rope body away from the fixing rod is fixedly connected to the driving end of the motor, and the motor is arranged on the lower surface of the dust shield. By setting the motor, during use, the motor is convenient for driving the dust shield to change its state in cooperation with the rope body, increasing the safety of the equipment.

[0008] Preferably, a stopper is fixedly connected to the surface of the dust shield, and the stopper is clamped with the box body. By setting the dust shield, it is convenient to block the dust flowing back into the spray pipe and guide it out of the equipment, increasing the stability of the equipment.

[0009] Preferably, the dust shield is rectangularly arranged, the box body is hollow, the spray pipe and the blower are communicated with the box body, and a rebounding component is arranged on one side of the dust shield. By setting the rebounding component, it is convenient to drive the dust shield to rotate, increasing the usability of the equipment and reducing the operation difficulty of the equipment.

[0010] Preferably, the rebounding component includes a rotating rod, the rotating rod is rotatably connected to the box body, the dust shield is fixedly connected to the rotating rod, and a round block is fixedly connected to the side of the rotating rod away from the dust shield through the box body. By setting the rotating rod, it is convenient to drive the dust shield to rotate, increasing the stability of the equipment and reducing the failure rate of the equipment.

[0011] Preferably, a torsion spring is sleeved on the surface of the rotating rod, and both ends of the torsion spring are fixedly connected to the round block and the box body respectively. By setting the torsion spring, during use, the torsion spring is convenient for driving the dust shield to rotate and assisting the dust shield to block the dust reflux.

[0012] Compared with the prior art, the advantages and positive effects of the utility model are as follows:

[0013] In the present utility model, by providing a reflux device, during use, the nozzle is connected to the boiler tube, and the fan drives the gas to enter the boiler tube through the nozzle to clean the dust in the boiler tube. After the equipment finishes cleaning, the fan is turned off. At this time, the motor drives the rope to unwind, and the torsion spring loses its restraint and generates elastic force to drive the rotating rod to rotate. While the rotating rod rotates, it drives the dust shield to tilt towards the inside of the box body and opens the rectangular slot. At this time, the dust shield blocks the passage leading to the fan, and the dust reaches the dust shield through the nozzle, is blocked by the dust shield, and falls out of the nozzle through the rectangular slot. When the equipment is started again, the motor drives the rope to wind up, and the rope pulls the dust shield to rotate back to its original position. When the stopper abuts against the box body, the rectangular slot closes. By providing the present utility model, the service life of the fan is effectively extended. The reflux of dust will cause wear and erosion to components such as the impeller and rotating shaft of the fan. Reducing the dust reflux can reduce this kind of damage, enabling the fan to operate stably for a long time and reducing production interruptions and maintenance costs caused by fan failures. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 FIG. 6 is a three-dimensional structural schematic diagram of a boiler soot blowing device for a power plant proposed by the present utility model;

[0015] Figure 2 FIG. 10 is a side view structural schematic diagram of a boiler soot blowing device for a power plant proposed by the present utility model;

[0016] Figure 3 FIG. 14 is a structural schematic diagram of a reflux device of a boiler soot blowing device for a power plant proposed by the present utility model;

[0017] Figure 4 FIG. 18 is a partial structural schematic diagram of a reflux device of a boiler soot blowing device for a power plant proposed by the present utility model;

[0018] Figure 5 FIG. 22 is a Figure 4 magnified structural schematic diagram of part A of a boiler soot blowing device for a power plant proposed by the present utility model.

[0019] LEGEND: 1, base; 2, bracket; 3, fan; 4, nozzle; 5, reflux device; 51, box body; 52, dust shield; 53, stopper; 54, rectangular slot; 55, fixed rod; 56, mounting plate; 57, motor; 58, rope; 59, return spring assembly; 591, round block; 592, rotating rod; 593, torsion spring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] Please refer to Figures 1-5 , the present utility model provides a technical solution: a boiler soot blowing device for a power plant, including a base 1 and a reflux device 5. A bracket 2 is installed on the surface of the base 1, a fan 3 is installed on the surface of the bracket 2, a nozzle 4 is installed at the driving end of the fan 3, and the reflux device 5 is arranged on the surface of the nozzle 4.

[0021] Specifically, the specific settings and functions of the reflux device 5 will be described below.

[0022] In this embodiment: The reflux device 5 includes a box body 51, the box body 51 is fixedly connected to the nozzle 4, a rectangular groove 54 is formed on the lower surface of the box body 51, a dust shield 52 is arranged on the inner wall of the rectangular groove 54, a fixing rod 55 is fixedly connected to the lower surface of the dust shield 52, a rope body 58 is sleeved on the surface of the fixing rod 55, an assembly plate 56 is fixedly connected to the surface of the bracket 2, and a motor 57 is fixedly connected to the surface of the assembly plate 56. By setting the reflux device 5, the service life of the fan 3 is effectively extended. The return of dust will cause wear and erosion to components such as the impeller and rotating shaft of the fan 3. Reducing the return of dust can reduce this damage, enabling the fan 3 to operate stably for a long time and reducing production interruptions and maintenance costs caused by fan 3 failures.

[0023] Specifically, one side of the rope body 58 away from the fixing rod 55 is fixedly connected to the driving end of the motor 57, and the motor 57 is arranged on the lower surface of the dust shield 52. By setting the motor 57, during use, the motor 57 facilitates driving the dust shield 52 to change states in cooperation with the rope body 58, increasing the safety of the device.

[0024] Specifically, a stopper 53 is fixedly connected to the surface of the dust shield 52, and the stopper 53 is clamped with the box body 51. By setting the dust shield 52, it is convenient to block the dust returning into the nozzle 4 and guide it out of the device, increasing the stability of the device.

[0025] Specifically, the dust shield 52 is rectangularly arranged, the box body 51 is hollow, the nozzle 4 and the fan 3 are communicated with the box body 51, and a rebound assembly 59 is arranged on one side of the dust shield 52.

[0026] In this embodiment: By setting the rebound assembly 59, it is convenient to drive the dust shield 52 to rotate, increasing the usability of the device and reducing the operation difficulty of the device.

[0027] Specifically, the rebound assembly 59 includes a rotating rod 592, the rotating rod 592 is rotatably connected to the box body 51, the dust shield 52 is fixedly connected to the rotating rod 592, and one side of the rotating rod 592 away from the dust shield 52 penetrates through the box body 51 and is fixedly connected to a round block 591.

[0028] In this embodiment: By setting the rotating rod 592, it is convenient to drive the dust shield 52 to rotate, increasing the stability of the device and reducing the failure rate of the device.

[0029] Specifically, a torsion spring 593 is sleeved on the surface of the rotating rod 592, and both ends of the torsion spring 593 are fixedly connected to the round block 591 and the box body 51 respectively.

[0030] In this embodiment: By providing a torsion spring 593, during use, the torsion spring 593 facilitates driving the dust shield 52 to rotate, assisting the dust shield 52 in blocking the backflow of dust.

[0031] Working principle: By providing a backflow device 5, during use, the nozzle 4 is connected to the boiler tube, and the fan 3 drives gas to enter the boiler tube through the nozzle 4 to clean the dust in the boiler tube. When the equipment cleaning is completed, the fan 3 is turned off. At this time, the motor 57 drives the rope 58 to pay out the line, and the torsion spring 593 loses restraint and generates elastic force to drive the rotating rod 592 to rotate. While the rotating rod 592 rotates, it drives the dust shield 52 to tilt towards the inside of the box body 51 and open the rectangular slot 54. At this time, the dust shield 52 blocks the passage leading to the fan 3, and the dust reaches the dust shield 52 through the nozzle 4, is blocked by the dust shield 52, and falls out of the nozzle 4 through the rectangular slot 54. When the equipment is started again, the motor 57 drives the rope 58 to take up the line, and the rope 58 pulls the dust shield 52 to rotate back to its original position. When the stopper 53 abuts against the box body 51, the rectangular slot 54 closes. By providing the present utility model, the service life of the fan 3 is effectively extended. The backflow of dust will cause wear and erosion to components such as the impeller and rotating shaft of the fan 3. Reducing the backflow of dust can reduce such damage, enabling the fan 3 to operate stably for a long time and reducing production interruptions and maintenance costs caused by fan 3 failures.

Claims

1. A boiler sootblowing device for a power plant, comprising a base (1) and a reflux device (5), characterized in that: A bracket (2) is mounted on the surface of the base (1), a fan (3) is mounted on the surface of the bracket (2), a nozzle (4) is mounted on the driving end of the fan (3), the reflux device (5) is arranged on the surface of the nozzle (4), the reflux device (5) comprises a box body (51), the box body (51) is fixedly connected to the nozzle (4), a rectangular groove (54) is provided on the lower surface of the box body (51), a dust shielding plate (52) is provided on the inner wall of the rectangular groove (54), a fixing rod (55) is fixedly connected to the lower surface of the dust shielding plate (52), a rope body (58) is sleeved on the surface of the fixing rod (55), an assembly plate (56) is fixedly connected to the surface of the bracket (2), and a motor (57) is fixedly connected to the surface of the assembly plate (56).

2. A boiler sootblowing device for a power plant according to claim 1, characterized in that: The side of the rope body (58) away from the fixing rod (55) is fixedly connected to the driving end of the motor (57), and the motor (57) is arranged on the lower surface of the dust shielding plate (52).

3. A boiler sootblowing device for a power plant according to claim 1, characterized in that: A stopper (53) is fixedly connected to the surface of the dust shielding plate (52), and the stopper (53) is snap-fitted to the box body (51).

4. A boiler sootblowing device for a power plant according to claim 1, characterized in that: The dust shielding plate (52) is arranged in a rectangular shape, the box body (51) is hollow, the nozzle (4) and the fan (3) are connected to the box body (51), and a rebound component (59) is arranged on one side of the dust shielding plate (52).

5. A boiler sootblowing device for a power plant according to claim 4, characterized in that: The rebound assembly (59) comprises a rotating rod (592) which is rotatably connected to the box body (51); the dust shielding plate (52) is fixedly connected to the rotating rod (592); a side of the rotating rod (592) away from the dust shielding plate (52) passes through the box body (51) and is fixedly connected to a round block (591).

6. A boiler sootblowing device for a power plant according to claim 5, characterized in that: A torsion spring (593) is sleeved on the surface of the rotating rod (592), and two ends of the torsion spring (593) are respectively fixedly connected to the round block (591) and the box body (51).

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