Anti-abrasion device for blades of induced draft fan of power plant

Abstract

The invention discloses a power plant induced draft fan blade anti-abrasion device, and relates to the field of anti-damage devices.The power plant induced draft fan blade anti-abrasion device comprises a base, an impeller is arranged on the top face of the base, a PLC is fixedly installed on one side of the base, the power plant induced draft fan blade anti-abrasion device further comprises an anti-damage assembly used for preventing damage of the impeller, and the anti-damage assembly is arranged on the top face of the base; the base, the impeller, the shell, the damage prevention bin, a rotating roller, a first belt wheel, a second belt wheel and a belt are used in cooperation, so that the effect of preventing the impeller from being damaged can be achieved, and flying objects such as dust, leaves and plastic bags are filtered, conveyed and discharged through an arranged filter screen belt; the filter screen belt and the brush roller are flushed through water flow to sweep impurities on one side of the filter screen belt, impurity accumulation is avoided, the impurities are effectively prevented from entering the shell, abrasion and other damage caused by impact on the impeller are avoided, automatic cleaning can be conducted, unsmooth air inlet is prevented, the protection effect is good, and practicability is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of anti-damage devices, and in particular to an anti-wear device for blades of an induced draft fan in a power plant. Background Art

[0002] An induced draft fan is a device that generates negative pressure through the rotation of an impeller and then extracts air from the system (equipment). It is generally installed at the tail end of a boiler and is used to extract hot flue gas from the furnace. In daily life, fans are usually divided into induced draft fans (negative pressure use) and blowers (positive pressure use) according to the different positive and negative pressure usage methods. induced draft fans are widely used in ventilation, dust removal and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings; ventilation and induced draft of boilers and industrial furnaces; cooling and ventilation in air conditioning equipment and household appliances; drying and selection of grains; inflation and propulsion of wind tunnel wind sources and hovercraft, etc. The working principle of an induced draft fan is basically the same as that of a turbine compressor, but due to the low gas flow rate and small pressure change, it is generally not necessary to consider the change in gas specific volume, that is, the gas is treated as an incompressible fluid.

[0003] In the prior art, inside a power plant, an induced draft fan is required to induce air to supply oxygen to boilers and other equipment for combustion assistance, or to ventilate the interior. However, in some windy weather, dust particles, leaves, plastic bags, etc. in the air will float in the air with the strong wind, which may clog the filter screen of the air intake pipe of the induced draft fan, resulting in poor air intake. Alternatively, small debris may pass through the filter screen and enter the air intake pipe, colliding with the induced draft fan blades and causing damage such as wear. There are certain limitations, and it is necessary to propose an anti-wear device for induced draft fan blades in a power plant to solve the above problems. Summary of the invention

[0004] The object of the present invention is to provide a device for preventing blade wear of an induced draft fan in a power plant, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an anti-wear device for blades of an induced draft fan in a power plant, comprising a base, an impeller is arranged on the top surface of the base, a PLC controller is fixedly mounted on one side of the base, and also comprises an anti-damage component for preventing the impeller from being damaged, the anti-damage component is arranged on the top surface of the base, the anti-damage component comprises: an outer shell, the outer shell is fixedly mounted on the top surface of the base, and one side of the base is fixedly mounted on the outer shell.

[0006] As a further solution of the present invention, the anti-damage component also includes an anti-damage warehouse fixedly installed on one side of the shell, the anti-damage warehouse has a filter belt movably sleeved inside, the filter belt has two rotating rollers movably sleeved inside, first circular through holes are respectively opened on both sides of the anti-damage warehouse, the first circular through holes are movably sleeved with the rotating rollers, a driving mechanism is fixedly installed on one side of the anti-damage warehouse, the outer circular wall surface of the driving shaft of the driving motor of the driving mechanism is fixedly sleeved with a first pulley, the driving motor of the driving mechanism is electrically connected to the PLC controller, second circular through holes are respectively opened on both sides of the anti-damage warehouse, the first circular through holes are movably sleeved with the rotating rollers, A brush roller is movably connected to the inner circular wall of the two circular through holes, a second pulley is fixedly connected to the outer circular wall of the brush roller, a belt is rotatably connected to the outer circular wall of the second pulley, the belt is rotatably connected to the first pulley, a fixed bin is fixedly installed on the bottom surface of the anti-damage bin, a third circular through hole is opened on one side of the fixed bin, a water pipe is fixedly connected to the inner circular wall of the third circular through hole, a solenoid valve is fixedly connected to the outer circular wall of the water pipe, a water inlet pipe is fixedly connected to the inner circular wall of the solenoid valve, a first fixed plate is fixedly installed on one side of the anti-damage bin, and a plurality of fixed columns are fixedly installed on one side of the inner side of the first fixed plate.

[0007] As a further solution of the present invention, a plurality of partitions are fixedly sleeved inside the anti-damage bin.

[0008] As a further solution of the present invention, a solenoid valve is fixedly sleeved on the outer circular wall surface of the water spray pipe, and a water inlet pipe is fixedly sleeved on the inner circular wall surface of the solenoid valve.

[0009] As a further solution of the present invention, a water collecting trough is fixedly installed on the bottom surface of the fixed bin, a fourth circular through hole is opened on the bottom surface of the water collecting trough, and a drainage pipe is fixedly sleeved on the inner circular wall surface of the fourth circular through hole.

[0010] As a further solution of the present invention, two support frames are fixedly installed on one side of the base, and the support frames are fixedly installed with the anti-damage bin.

[0011] As a further solution of the present invention, guide plates are fixedly mounted on one side and the top surface of the fixed bin respectively.

[0012] As a further solution of the present invention, a driving motor is fixedly installed on the top surface of the base, and the driving motor is electrically connected to the PLC controller. Two second fixing plates are fixedly installed on the outer circular wall of the driving motor. Two threaded columns are fixedly installed on the top surface of the base, and the threaded columns are movably connected to the second fixing plates. The outer circular wall of the threaded columns is threadedly connected with a nut.

[0013] As a further solution of the present invention, a support pad is fixedly mounted on the top surface of the base and two rubber pads are provided, and the rubber pads are movably sleeved with the threaded column.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The base, impeller, shell, anti-damage bin, filter belt, rotating roller, first pulley, second pulley and belt are used in coordination with each other to achieve the effect of preventing the impeller from being damaged, so that flying objects such as dust, leaves and plastic bags can be filtered and transported out through the filter belt, and the debris on one side of the filter belt can be swept away by flushing the filter belt and the brush roller through water flow to avoid accumulation of debris, thereby effectively preventing foreign matter from entering the interior of the shell, thereby avoiding impact on the impeller and causing damage such as wear, and the impeller can be cleaned by itself to prevent poor air intake, with good protection effect and being more practical.

[0016] In addition, by using the nut, threaded column, second fixing plate and base in coordination with each other, the second fixing plate and the drive motor can be fixed, and the drive motor can be damped by the rubber pad to reduce the vibration transmitted by the drive motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 It is a schematic diagram of the base structure of the present invention;

[0019] Figure 3 It is a schematic diagram of the impeller structure of the present invention;

[0020] Figure 4 For the present invention Figure 2 Schematic diagram of the local structure of A;

[0021] Figure 5 For the present invention Figure 3 Schematic diagram of the local structure of B;

[0022] Figure 6 It is a schematic diagram of the shell structure of the present invention;

[0023] Figure 7 For the present invention Figure 6 Schematic diagram of the local structure of C.

[0024] In the figure: 1. base; 2. impeller; 3. casing; 4. anti-damage bin; 5. filter belt; 6. rotating roller; 7. first pulley; 8. second pulley; 9. belt; 10. driving mechanism; 11. brush roller; 12. fixed bin; 13. water spray pipe; 14. driving motor; 15. first fixed plate; 16. fixed column; 17. solenoid valve; 18. water inlet pipe; 19. guide plate; 20. partition; 21. water collecting trough; 22. drain pipe; 23. support frame; 24. support pad; 25. second fixed plate; 26. threaded column; 27. nut; 28. rubber pad. DETAILED DESCRIPTION

[0025] 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.

[0026] like Figure 1-Figure 7 As shown, the present invention provides a technical solution: an anti-wear device for blades of an induced draft fan in a power plant, comprising a base 1, an impeller 2 is arranged on the top surface of the base 1, a PLC controller is fixedly installed on one side of the base 1, and also comprises an anti-damage component for preventing the impeller 2 from being damaged, the anti-damage component is arranged on the top surface of the base 1, and the anti-damage component comprises: a shell 3, the shell 3 is fixedly installed on the top surface of the base 1, one side of the base 1 is fixedly installed with the shell 3, the anti-damage component also comprises an anti-damage bin 4 fixedly installed on one side of the shell 3, a filter belt 5 is movably sleeved inside the anti-damage bin 4, and the model of the filter belt 5 is Lushun-56254, the filter belt 5 is movably sleeved inside two rotating rollers 6, first circular through holes are respectively opened on both sides of the anti-damage bin 4, the first circular through holes are movably sleeved with the rotating roller 6, a driving mechanism 10 is fixedly installed on one side of the anti-damage bin 4, and the driving mechanism 10 comprises a driving motor and a mounting device for fixing it. The outer circular wall surface of the driving shaft of the driving motor of the driving mechanism 10 is fixedly sleeved with a first pulley 7, the driving motor of the driving mechanism 10 is electrically connected to the PLC controller, second circular through holes are respectively provided on both sides of the anti-damage warehouse 4, the inner circular wall surface of the second circular through hole is movably sleeved with a brush roller 11, the outer circular wall surface of the brush roller 11 is fixedly sleeved with a second pulley 8, the outer circular wall surface of the second pulley 8 is rotatably connected with a belt 9, the belt 9 is rotatably connected to the first pulley 7, a fixed warehouse 12 is fixedly installed on the bottom surface of the anti-damage warehouse 4, a third circular through hole is provided on one side of the fixed warehouse 12, a water spray pipe 13 is fixedly sleeved on the inner circular wall surface of the third circular through hole, the outer circular wall surface of the water spray pipe 13 is fixedly sleeved with an electromagnetic valve 17, the inner circular wall surface of the electromagnetic valve 17 is fixedly sleeved with a water inlet pipe 18, a first fixed plate 15 is fixedly installed on one side of the anti-damage warehouse 4, and a plurality of fixed columns 16 are fixedly installed on one side of the inner side of the first fixed plate 15.

[0027] It should be noted that, through the provided base 1, when the power plant needs to induced wind, at this time, the air inlet pipe is connected to one end of the anti-damage bin 4, and then the air outlet pipe is connected to the air outlet of the outer shell 3, so that the drive motor 14 is started to drive the impeller 2 to rotate, and the rotating impeller 2 causes the air inside the outer shell 3 to flow, and then, through the provided anti-damage bin 4, the air flows at high speed and enters through an open side of the outer shell 3. At this time, through the provided drive mechanism 10, the drive mechanism 10 is started to drive the first pulley 7 and the rotating roller 6 to rotate, and the rotating rotating roller 6 causes the filter mesh belt 5 to rotate, so that the filter mesh belt 5 rotates clockwise, and at the same time, the rotating first pulley 7 drives the second pulley 8 to rotate through the belt 9, and the rotating second pulley 8 causes the brush roller 11 to rotate, However, when the weather is bad, such as when there is a strong wind, the dust, leaves and plastic bags on the outdoor bottom surface are blown into the air and enter the interior of the anti-damage bin 4 through the air intake pipe. Various foreign matter and impurities are filtered through the filter belt 5, so that the rotating filter belt 5 conveys the filtered flying objects such as dust, leaves and plastic bags downward, so that the debris on one side of the filter belt 5 is swept away by the rotating brush roller 11 and falls to one side of the guide plate 19 and is discharged from the interior of the anti-damage bin 4, and the debris adhered to the outside of the brush roller 11 is cleaned out through the fixed column 16, and then the water pipe 13 sprays water to clean the filter belt 5, and the dust flows downward into the interior of the sump 21 and is discharged through the drain pipe 22, thereby completing the filtering and cleaning of the debris and avoiding damage to the impeller 2.

[0028] like Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, a plurality of partitions 20 are fixedly sleeved inside the anti-damage bin 4, a solenoid valve 17 is fixedly sleeved on the outer circumferential wall of the water spray pipe 13, a water inlet pipe 18 is fixedly sleeved on the inner circumferential wall of the solenoid valve 17, a water collecting trough 21 is fixedly installed on the bottom surface of the fixed bin 12, a fourth circular through hole is opened on the bottom surface of the water collecting trough 21, a drain pipe 22 is fixedly sleeved on the inner circumferential wall of the fourth circular through hole, two support frames 23 are fixedly installed on one side of the base 1, the support frames 23 are fixedly installed on the anti-damage bin 4, and a guide plate 19 is fixedly installed on one side and the top surface of the fixed bin 12 respectively.

[0029] It should be noted that, by setting and starting the solenoid valve 17, the water inside the water inlet pipe 18 enters the water spray pipe 13 and is sprayed out through the nozzle, so that the sprayed water is sprayed to the outside of the filter belt 5, and the sewage is collected and discharged by the set water collection tank 21. The support frame 23 is set, and the support frame 23 strengthens and fixes the anti-damage bin 4 to reduce the shaking of the anti-damage bin 4.

[0030] like Figure 1 , Figure 5 , Figure 6 and Figure 7 As shown, a driving motor 14 is fixedly installed on the top surface of the base 1, and the driving motor 14 is electrically connected to the PLC controller. Two second fixing plates 25 are fixedly installed on the outer circular wall of the driving motor 14. Two threaded columns 26 are fixedly installed on the top surface of the base 1. The threaded columns 26 are movably connected with the second fixing plates 25. The outer circular wall of the threaded column 26 is threadedly connected with a nut 27. A supporting pad 24 and two rubber pads 28 are fixedly installed on the top surface of the base 1, and the rubber pads 28 are movably connected with the threaded columns 26.

[0031] It should be noted that the threaded column 26 and the nut 27 cooperate with each other to fix the second fixing plate 25 and the drive motor 14, and the rubber pad 28 is used to dampen the drive motor 14, thereby reducing the vibration transmitted by the drive motor 14.

[0032] It should be noted that, when the present invention is in use, through the provided base 1, when the power plant needs to induce air, at this time, the air inlet pipe is connected to the air inlet end of the damage prevention bin 4, and then the air outlet pipe is connected to the air outlet of the shell 3, so that the drive motor 14 is started to drive the impeller 2 to rotate, and the rotating impeller 2 causes the air inside the shell 3 to flow, and then, through the provided damage prevention bin 4, the air flows at a high speed and enters through the opening on one side of the shell 3, at this time, through the provided drive mechanism 10, the drive mechanism 10 is started to drive the first pulley 7 and the rotating roller 6 The rotating roller 6 rotates, and the rotating roller 6 rotates the filter mesh belt 5, so that the filter mesh belt 5 rotates clockwise. At the same time, the rotating first pulley 7 drives the second pulley 8 to rotate through the belt 9, and the rotating second pulley 8 rotates the brush roller 11, and activates the electromagnetic valve 17 to make the water inside the water inlet pipe 18 enter the inside of the water spray pipe 13 and spray out through the nozzle, so that the sprayed water is sprayed to the outside of the filter mesh belt 5. Therefore, when the weather is bad, such as strong winds, dust, leaves and plastic bags on the bottom surface of the outdoor are blown up and float in the air, and enter the anti-damage warehouse 4 along the air inlet pipe. The filter belt 5 is provided to filter various foreign matters and impurities inside, so that the rotating filter belt 5 conveys the filtered dust, leaves, plastic bags and other flying objects downward, so that the rotating brush roller 11 sweeps the debris on one side of the filter belt 5 and drops it to one side of the guide plate 19 to be discharged from the inside of the anti-damage bin 4, and the fixed column 16 is provided to clean the debris adhering to the outside of the brush roller 11, and then the water spray pipe 13 sprays water to clean the filter belt 5, and the dust flows downward into the inside of the water collection tank 21 and is discharged through the drain pipe 22. Thereby, the debris is filtered and cleaned, and damage to the impeller 2 is avoided, thereby comprehensively achieving the effect of preventing the impeller 2 from being damaged, so that flying objects such as dust, leaves and plastic bags are filtered and transported out through the set filter belt 5, and the filter belt 5 and the brush roller 11 are flushed by water to remove the debris on one side of the filter belt 5 to avoid accumulation of debris, thereby effectively preventing foreign matter from entering the interior of the outer shell 3, thereby avoiding impact on the impeller 2 and causing damage such as wear, and it can clean itself to prevent poor air intake, with good protection effect and more practical.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is limited by the attached embodiments and their equivalents.

Claims

1. A device for preventing blade wear of an induced draft fan in a power plant, comprising a base (1), an impeller (2) being arranged on the top surface of the base (1), and a PLC controller being fixedly mounted on one side of the base (1), characterized in that: It also includes an anti-damage component for preventing the impeller (2) from being damaged, the anti-damage component being arranged on the top surface of the base (1), the anti-damage component comprising: an outer shell (3), the outer shell (3) being fixedly mounted on the top surface of the base (1), and one side of the base (1) being fixedly mounted to the outer shell (3).

2. The anti-wear device for induced draft fan blades of a power plant according to claim 1, characterized in that: The anti-damage component further comprises an anti-damage bin (4) fixedly mounted on one side of the housing (3), a filter belt (5) being movably sleeved inside the anti-damage bin (4), two rotating rollers (6) being movably sleeved inside the filter belt (5), first circular through holes being respectively opened on both sides of the anti-damage bin (4), the first circular through holes being movably sleeved with the rotating rollers (6), a driving mechanism (10) being fixedly mounted on one side of the anti-damage bin (4), a first pulley (7) being fixedly sleeved on the outer circular wall surface of the driving motor of the driving mechanism (10), the driving motor of the driving mechanism (10) being electrically connected to the PLC controller, second circular through holes being respectively opened on both sides of the anti-damage bin (4), a brush roller ( 11), the outer circular wall surface of the brush roller (11) is fixedly sleeved with a second pulley (8), the outer circular wall surface of the second pulley (8) is rotatably connected with a belt (9), the belt (9) is rotatably connected with the first pulley (7), the bottom surface of the anti-damage bin (4) is fixedly installed with a fixed bin (12), one side of the fixed bin (12) is provided with a third circular through hole, the inner circular wall surface of the third circular through hole is fixedly sleeved with a water spray pipe (13), the outer circular wall surface of the water spray pipe (13) is fixedly sleeved with a solenoid valve (17), the inner circular wall surface of the solenoid valve (17) is fixedly sleeved with a water inlet pipe (18), one side of the anti-damage bin (4) is fixedly installed with a first fixed plate (15), and one side of the interior of the first fixed plate (15) is fixedly installed with a plurality of fixed columns (16).

3. The anti-wear device for induced draft fan blades of a power plant according to claim 2, characterized in that: A plurality of partitions (20) are fixedly sleeved inside the anti-damage bin (4).

4. The anti-wear device for induced draft fan blades of a power plant according to claim 2, characterized in that: The outer circular wall surface of the water spray pipe (13) is fixedly sleeved with a solenoid valve (17), and the inner circular wall surface of the solenoid valve (17) is fixedly sleeved with a water inlet pipe (18).

5. The anti-wear device for induced draft fan blades of a power plant according to claim 2, characterized in that: A water collecting trough (21) is fixedly mounted on the bottom surface of the fixed bin (12), a fourth circular through hole is opened on the bottom surface of the water collecting trough (21), and a drainage pipe (22) is fixedly sleeved on the inner circular wall surface of the fourth circular through hole.

6. The device for preventing blade wear of an induced draft fan in a power plant according to claim 2, characterized in that: Two support frames (23) are fixedly mounted on one side of the base (1), and the support frames (23) are fixedly mounted on the anti-damage bin (4).

7. The device for preventing blade wear of an induced draft fan in a power plant according to claim 2, characterized in that: A guide plate (19) is fixedly mounted on one side and the top surface of the fixed bin (12).

8. The device for preventing blade wear of an induced draft fan in a power plant according to claim 1, characterized in that: A driving motor (14) is fixedly mounted on the top surface of the base (1), the driving motor (14) being electrically connected to the PLC controller, two second fixing plates (25) being fixedly mounted on the outer circumferential wall surface of the driving motor (14), two threaded columns (26) being fixedly mounted on the top surface of the base (1), the threaded columns (26) being movably sleeved with the second fixing plates (25), and a nut (27) being threadedly connected to the outer circumferential wall surface of the threaded column (26).

9. The device for preventing blade wear of an induced draft fan in a power plant according to claim 8, characterized in that: A support pad (24) is fixedly mounted on the top surface of the base (1) and two rubber pads (28) are provided, and the rubber pads (28) are movably sleeved with the threaded column (26).

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