Treatment equipment for boiler inlet air

Abstract

The utility model belongs to the technical field of boilers, and relates to boiler air inlet processing equipment which comprises a base, a boiler, an induced draft fan and heating equipment are fixedly installed on the top of the base, an air inlet pipe is fixedly connected to an air inlet of the induced draft fan, and a filter screen is fixedly connected to the interior of the end, away from the induced draft fan, of the air inlet pipe. A brush plate is slidably arranged on one side of the filter screen; a rotating shaft is rotationally connected into the induced draft fan, blades are fixedly connected to the rotating shaft, a transmission assembly is arranged at the end of the rotating shaft, and the transmission assembly drives the brush plate to vertically slide up and down when the rotating shaft rotates. The device has the advantages that a motor is started to drive a rotating shaft to rotate, blades rotate to suck air into an induced draft fan through an air inlet pipe, a filter screen can filter the entering air, the rotating shaft can drive a rotating disc and a clamping rod to rotate, the clamping rod slides in a clamping groove plate, the clamping groove plate and a connecting plate are pushed to move up and down, and a brush plate is driven to slide up and down on one side of the filter screen; and the brush plate is driven to clean the filter screen while air is fed.

Description

Technical Field

[0001] This utility model belongs to the field of boiler technology and relates to a treatment device for boiler air intake. Background Technology

[0002] A boiler is an energy conversion device. The hot water or steam produced in a boiler can directly provide the heat energy needed for industrial production and people's lives, or it can be converted into mechanical energy through a steam power unit, or the mechanical energy can be converted into electrical energy through a generator. Boilers typically use induced draft fans. To ensure that the incoming air can function effectively without affecting the stability of fuel combustion, the air usually needs to be preheated before entering the boiler.

[0003] A boiler induced draft fan disclosed in Chinese patent CN218787208U includes a fan body for induced draft in a boiler. An air inlet pipe for filtering dust is fixedly connected to the upper end of the fan body. The air inlet pipe includes an air inlet frame. An installation frame for easy removal and replacement of the filter screen is snapped into the inner wall of the air inlet frame. A first filter screen for filtering dust is snapped into the upper end of the inner wall of the installation frame, and a second filter screen is snapped into the lower end of the inner wall of the installation frame. Filter cotton for enhancing the filtration effect is provided between the first filter screen and the second filter screen.

[0004] This induced draft fan filters the air entering its body through the combined action of a first filter, filter cotton, and a second filter. This prevents the fan from blowing particulate-laden air into the boiler, which could cause incomplete combustion and damage. However, the filtered dust particles tend to clog one side of the filter, requiring frequent disassembly and cleaning of the mounting frame, making it inconvenient to use.

[0005] To address the aforementioned problems, this utility model proposes a treatment device for boiler air intake. Utility Model Content

[0006] To address the problems existing in the background technology, this utility model proposes a treatment device for boiler air intake.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows: it includes a base, on the top of which a boiler, an induced draft fan, and a heating device are fixedly installed. An air outlet pipe is fixedly connected to the air outlet of the induced draft fan. A fourth pipe is fixedly connected to one side of the air outlet pipe. The other end of the fourth pipe is fixedly connected to the steam outlet of the boiler. One end of the air outlet pipe is connected to the heating device. The heating device is fixedly connected to the air inlet of the boiler through a fifth pipe.

[0008] An air inlet pipe is fixedly connected to the air inlet of the induced draft fan. A filter screen is fixedly connected inside the end of the air inlet pipe away from the induced draft fan. A brush plate is slidably provided on one side of the filter screen.

[0009] The internal rotating part of the induced draft fan is connected to a rotating shaft, on which blades are fixedly connected. A transmission component is provided at the end of the rotating shaft. When the rotating shaft rotates, the transmission component drives the brush plate to slide vertically up and down.

[0010] Furthermore, a motor is fixedly connected to one end of the induced draft fan, and one end of the rotating shaft is fixedly connected to the output end of the motor. The rotating shaft is horizontally arranged, and the other end of the rotating shaft rotates through the end face of the induced draft fan.

[0011] Furthermore, the transmission assembly includes a turntable, which is coaxially and fixedly connected to one end of the rotating shaft that extends to the outside of the induced draft fan, and a locking rod is eccentrically and fixedly connected to the other side of the turntable;

[0012] A connecting plate is fixedly connected to the middle of the bottom surface of the brush plate. The connecting plate is vertically arranged, and an annular slot plate is fixedly connected to the bottom end of the connecting plate. The slot plate is horizontally arranged, and the clamping rod is slidably connected inside the slot plate. The turntable is slidably engaged with the slot plate and the connecting plate.

[0013] One end of the induced draft fan is fixedly connected to a fixing plate, and the connecting plate slides through the fixing plate.

[0014] Furthermore, the heating device includes an inlet valve and a heat exchanger. Both the inlet valve and the heat exchanger are fixedly installed on the top of the base. The end of the outlet pipe away from the induced draft fan is fixedly connected to the inlet of the inlet valve. A heating pipe is fixedly connected to the outlet of the inlet valve. The other end of the heating pipe is fixedly connected to the inlet of the heat exchanger. One end of the fifth pipe is fixedly connected to the hot air outlet of the heat exchanger.

[0015] Furthermore, a condensate expansion container and a deaerator are fixedly installed on the top of the base. A first pipe is fixedly connected to the steam outlet of the heat exchanger, and the other end of the first pipe is fixedly connected to the input end of the condensate expansion container. A water pump is fixedly connected to the outlet of the condensate tank in the condensate expansion container. The output end of the water pump is fixedly connected to the input end of the deaerator. A third pipe is fixedly connected to the output end of the deaerator, and the other end of the third pipe is fixedly connected to the inlet of the boiler.

[0016] Furthermore, a base plate is provided directly below the base, and telescopic rods and springs are fixedly connected to the four corners of the top of the base plate. The springs are sleeved on the corresponding telescopic rods, and the top ends of the springs and telescopic rods are fixedly connected to the bottom surface of the base.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] This boiler intake air treatment device is equipped with a brush plate, which slides on one side of the filter screen. When the induced draft fan is in use, the motor is started to drive the shaft to rotate, causing the blades to rotate and draw air into the induced draft fan through the intake pipe. The filter screen filters the incoming air, while the shaft drives the turntable and the locking rod to rotate, causing the locking rod to slide inside the locking plate. This, in turn, pushes the locking plate and the connecting plate to move up and down, causing the brush plate to slide up and down on one side of the filter screen. This allows the brush plate to clean the filter screen while the air is being introduced, reducing the number of times the filter screen needs to be disassembled and cleaned, making it more convenient to use. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0020] Figure 2 This is a schematic diagram of the internal structure of the induced draft fan in this utility model;

[0021] Figure 3 This utility model Figure 1 Top view.

[0022] In the diagram: 1. Base plate; 2. Telescopic rod; 3. Spring; 4. Base; 5. Exhaust fan; 6. Sound-absorbing layer; 7. Blades; 8. Shaft; 9. Turntable; 10. Locking rod; 11. Locking slot plate; 12. Connecting plate; 13. Fixing plate; 14. Brush plate; 15. Inlet duct; 16. Filter screen; 17. Sponge layer; 18. Outlet duct; 19. Inlet valve; 20. Heating tube; 21. Heat exchanger; 22. First pipe; 23. Drainage expansion container; 24. Second pipe; 25. Water pump; 26. Deaerator; 27. Third pipe; 28. Boiler; 29. ​​Fourth pipe; 30. Fifth pipe; 31. Motor. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] like Figures 1-3 As shown, the technical solution adopted by this utility model is as follows: a treatment device for boiler air intake, including a base 4, on the top of the base 4, a boiler 28, an induced draft fan 5, and a heating device are fixedly installed.

[0025] An exhaust pipe 18 is fixedly connected to the exhaust outlet of the induced draft fan 5. A fourth pipe 29 is fixedly connected to one side of the exhaust pipe 18, and the other end of the fourth pipe 29 is fixedly connected to the steam outlet of the boiler 28. The fourth pipe 29 is connected to the exhaust pipe 18, allowing steam from the boiler 28 to enter the exhaust pipe 18 through the fourth pipe 29, thus providing preliminary heating to the air. A one-way valve is installed on the fourth pipe 29, ensuring that steam in the fourth pipe 29 can only enter the exhaust pipe 18.

[0026] One end of the air outlet duct 18 is connected to a heating device, which is fixedly connected to the air inlet of the boiler 28 via the fifth pipe 30. The heating device heats the air entering the boiler 28.

[0027] The heating equipment includes an inlet valve 19 and a heat exchanger 21, both of which are fixedly mounted on the top of the base 4. The end of the outlet pipe 18 furthest from the induced draft fan 5 is fixedly connected to the inlet of the inlet valve 19, and a heating pipe 20 is fixedly connected to the outlet of the inlet valve 19. The gas flow rate is controlled by the inlet valve 19.

[0028] The other end of the heating tube 20 is fixedly connected to the air inlet of the heat exchanger 21, and one end of the fifth pipe 30 is fixedly connected to the hot air outlet of the heat exchanger 21. The heat exchanger 21 heats the gas. The working principle of the heat exchanger 21 is mainly based on the principle of heat conduction, exchanging heat between two fluids at different temperatures through heat conduction, which is an existing product.

[0029] A condensate expansion tank 23 and a deaerator 26 are fixedly installed on the top of the base 4. A first pipe 22 is fixedly connected to the steam outlet of the heat exchanger 21, and the other end of the first pipe 22 is fixedly connected to the inlet of the condensate expansion tank 23. The cooled steam in the heat exchanger 21 is reused.

[0030] A water pump 25 is fixedly connected to the outlet of the condensate tank in the condensate expansion tank 23. The output end of the water pump 25 is fixedly connected to the input end of the deaerator 26. A second pipe 24 is fixedly connected to the output end of the water pump 25, and the other end of the second pipe 24 is fixedly connected to the inlet of the deaerator 26. Water in the condensate tank is pumped out by the water pump 25 into the second pipe 24, and then enters the deaerator 26, so that the treated water can be returned to the boiler 28 for reuse. The condensate expansion tank 23 expands and depressurizes the condensate in the pressure condensate pipeline, separating steam and condensate. The condensate is introduced into the condensate tank and periodically sent to the feedwater system. The condensate expansion tank 23 is an existing product.

[0031] The output end of the deaerator 26 is fixedly connected to a third pipe 27, and the other end of the third pipe 27 is fixedly connected to the inlet of the boiler 28. The deaerator 26 mainly removes dissolved oxygen and other gases from the feedwater, and prevents and reduces corrosion of the feedwater pipe, economizer and other auxiliary equipment of the boiler 28. The deaerator 26 is an existing product.

[0032] An air inlet pipe 15 is fixedly connected to the air inlet of the induced draft fan 5. A filter screen 16 is fixedly connected inside the end of the air inlet pipe 15 away from the induced draft fan 5. A sponge layer 17 is fixedly connected to the side of the filter screen 16 closest to the inner cavity of the air inlet pipe 15. The sponge layer 17 can adsorb impurities in the gas, making the filtration effect better. A brush plate 14 is slidably arranged on one side of the filter screen 16.

[0033] A sound-absorbing layer 6, made of butyl rubber, is installed inside the side of the induced draft fan 5. It has the effect of sound insulation and noise reduction.

[0034] The internal rotating part of the induced draft fan 5 is connected to a rotating shaft 8, and blades 7 are fixedly connected to the rotating shaft 8.

[0035] A motor 31 is fixedly connected to one end of the induced draft fan 5, and one end of the rotating shaft 8 is fixedly connected to the output end of the motor 31. The rotating shaft 8 is horizontally arranged, and the other end of the rotating shaft 8 rotates through the end face of the induced draft fan 5. The rotating shaft 8 is driven to rotate by the motor 31.

[0036] A transmission component is provided at the end of the rotating shaft 8. When the rotating shaft 8 rotates, the transmission component drives the brush plate 14 to slide vertically up and down.

[0037] The transmission assembly includes a turntable 9, which is coaxially and fixedly connected to one end of the rotating shaft 8 that extends to the outside of the induced draft fan 5. A locking rod 10 is eccentrically and fixedly connected to the other side of the turntable 9.

[0038] A connecting plate 12 is fixedly connected to the center of the bottom surface of the brush plate 14, and the connecting plate 12 is vertically arranged. An annular slot plate 11 is fixedly connected to the bottom end of the connecting plate 12, and the slot plate 11 is horizontally arranged. The locking rod 10 is slidably connected inside the slot plate 11, and the turntable 9 is slidably engaged with the slot plate 11 and the connecting plate 12. This allows the locking rod 10 to slide inside the slot plate 11 as the turntable 9 rotates, thereby pushing the slot plate 11 and the connecting plate 12 to move up and down.

[0039] One end of the induced draft fan 5 is fixedly connected to a fixing plate 13, and a connecting plate 12 slides through the fixing plate 13. The fixing plate 13 positions the connecting plate 12 as it slides up and down.

[0040] A base plate 1 is located directly below the base 4. Telescopic rods 2 and springs 3 are fixedly connected to the four corners of the top of the base plate 1. The springs 3 are fitted onto the corresponding telescopic rods 2, and the tops of both the springs 3 and the telescopic rods 2 are fixedly connected to the bottom surface of the base 4. The springs 3 provide a cushioning effect for the base 4.

[0041] Working principle:

[0042] In use, the motor 31 is started to drive the shaft 8 to rotate, which in turn causes the blades 7 to rotate. The rotation of the blades 7 generates suction, drawing outside air into the induced draft fan 5 through the air inlet pipe 15.

[0043] The air entering the air inlet duct 15 passes through the filter screen 16 and the sponge layer 17. The filter screen 16 filters impurities in the air, and the sponge layer 17 adsorbs impurities in the air. As the blades 7 rotate, they drive the air to move and form a wind, which is then discharged through the air outlet duct 18.

[0044] Open the one-way valve on the fourth pipe 29 to allow steam from the boiler 28 to enter the fourth pipe 29, and then into the air outlet pipe 18, where the steam provides initial heating to the air. Then open the air inlet valve 19 to allow steam and air to enter the heating tube 20 together, and then into the heat exchanger 21 for heating.

[0045] The heated air enters the boiler 28 through the fifth pipe 30. The steam discharged from the heat exchanger 21 is discharged into the condensate expansion tank 23 through the first pipe 22, and the condensate is introduced into the condensate tank. The water pump 25 is started to pump water from the condensate tank into the second pipe 24, and then into the deaerator 26. The water treated by the deaerator 26 enters the third pipe 27, and finally enters the boiler 28.

[0046] The rotating shaft 8 also drives the turntable 9 to rotate, causing the clamping rod 10 to rotate. When the clamping rod 10 rotates, it slides inside the clamping slot plate 11. Due to the limitation of the fixing plate 13, the clamping slot plate 11 and the connecting plate 12 slide up and down together. This, in turn, drives the brush plate 14 to slide up and down on one side of the filter screen 16, allowing the brush plate 14 to brush and clean one side of the filter screen 16.

[0047] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A treatment device for boiler inlet air, characterized in that, Includes a base (4), on the top of which a boiler (28), an induced draft fan (5), and a heating device are fixedly installed. An air outlet pipe (18) is fixedly connected to the air outlet of the induced draft fan (5). A fourth pipe (29) is fixedly connected to one side of the air outlet pipe (18). The other end of the fourth pipe (29) is fixedly connected to the steam outlet of the boiler (28). One end of the air outlet pipe (18) is connected to the heating device. The heating device is fixedly connected to the air inlet of the boiler (28) through a fifth pipe (30). An air inlet pipe (15) is fixedly connected to the air inlet of the blower (5). A filter screen (16) is fixedly connected inside the end of the air inlet pipe (15) away from the blower (5). A brush plate (14) is slidably provided on one side of the filter screen (16). The internal rotating connection of the blower (5) is a rotating shaft (8), and blades (7) are fixedly connected on the rotating shaft (8). A transmission component is provided at the end of the rotating shaft (8). When the rotating shaft (8) rotates, the transmission component drives the brush plate (14) to slide vertically up and down.

2. The treatment equipment for boiler inlet air according to claim 1, characterized in that: One end of the blower (5) is fixedly connected to a motor (31), and one end of the shaft (8) is fixedly connected to the output end of the motor (31). The shaft (8) is horizontally arranged, and the other end of the shaft (8) rotates through the end face of the blower (5).

3. The treatment equipment for boiler inlet air according to claim 2, characterized in that: The transmission assembly includes a turntable (9), which is coaxially fixedly connected to one end of the rotating shaft (8) extending to the outside of the induced draft fan (5), and a locking rod (10) is eccentrically fixedly connected to the other side of the turntable (9); A connecting plate (12) is fixedly connected to the middle of the bottom surface of the brush plate (14). The connecting plate (12) is vertically arranged. An annular slot plate (11) is fixedly connected to the bottom end of the connecting plate (12). The slot plate (11) is horizontally arranged. The clamping rod (10) is slidably connected to the inside of the slot plate (11). The turntable (9) is slidably engaged with the slot plate (11) and the connecting plate (12). One end of the induced draft fan (5) is fixedly connected to a fixing plate (13), and the connecting plate (12) slides through the fixing plate (13).

4. The treatment equipment for boiler inlet air according to claim 1, characterized in that: The heating device includes an inlet valve (19) and a heat exchanger (21). The inlet valve (19) and the heat exchanger (21) are both fixedly installed on the top of the base (4). The end of the outlet pipe (18) away from the induced draft fan (5) is fixedly connected to the inlet of the inlet valve (19). The outlet end of the inlet valve (19) is fixedly connected to a heating pipe (20). The other end of the heating pipe (20) is fixedly connected to the inlet end of the heat exchanger (21). One end of the fifth pipe (30) is fixedly connected to the hot air outlet of the heat exchanger (21).

5. The treatment device for boiler inlet air according to claim 4, characterized in that: A condensate expansion container (23) and a deaerator (26) are fixedly installed on the top of the base (4). A first pipe (22) is fixedly connected to the steam outlet of the heat exchanger (21). The other end of the first pipe (22) is fixedly connected to the input end of the condensate expansion container (23). A water pump (25) is fixedly connected to the outlet of the condensate tank in the condensate expansion container (23). The output end of the water pump (25) is fixedly connected to the input end of the deaerator (26). A third pipe (27) is fixedly connected to the output end of the deaerator (26). The other end of the third pipe (27) is fixedly connected to the inlet of the boiler (28).

6. The treatment equipment for boiler inlet air according to claim 1, characterized in that: A base plate (1) is provided directly below the base (4). Telescopic rods (2) and springs (3) are fixedly connected to the four corners of the top of the base plate (1). The springs (3) are sleeved on the corresponding telescopic rods (2). The top ends of the springs (3) and the telescopic rods (2) are fixedly connected to the bottom surface of the base (4).

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