A boiler that uses biomass powder fuel as a reducing agent for secondary combustion to reduce nitrogen oxides

Abstract

The present invention discloses a boiler for reducing nitrogen oxides by secondary combustion with biomass powder fuel as a reducing agent, including a furnace body. The top of the furnace body is communicated with an exhaust pipe, and the bottom of the exhaust pipe penetrates to the top of the inner cavity of the furnace body and is fixedly connected with a filter screen. Through the coordinated use of the furnace body, exhaust pipe, filter screen, telescopic rod, first spring, cross bar, housing, second spring, limiting block, support rod, impact ball, trapezoidal block, buffer box, guide post, moving plate, third spring, drive box, first motor, turntable, pin shaft and movable frame, the present invention has the advantages of sufficient combustion and anti-blocking, and solves the problems that in the existing boiler, when too much fuel is fed, it is easy to cause the fuel to accumulate together, resulting in insufficient combustion and affecting the combustion effect, and the filter plate cannot be cleaned and removed of impurities, and dust particle impurities are easily statically adhered and blocked on the filter plate in large quantities, resulting in a reduction in the ventilation efficiency of the filter plate, thus unable to meet the use requirements.

Description

Technical Field

[0001] The present invention relates to the technical field of boilers, and specifically, to a boiler that uses biomass powder fuel as a reducing agent for secondary combustion to reduce nitrogen oxides. Background Art

[0002] A biomass boiler is a type of boiler. A boiler that uses biomass energy as fuel is called a biomass boiler, which is divided into biomass steam boilers, biomass hot water boilers, biomass hot air furnaces, biomass heat transfer oil furnaces, vertical biomass boilers, horizontal biomass boilers, etc.

[0003] In the prior art, biomass fuel is made from agricultural and forestry wastes as raw materials through processes such as crushing, mixing, extrusion, and drying into fuels in the form of blocks, granules, etc. In order to reduce nitrogen oxides, it is necessary to use biomass powder fuel as a reducing agent for secondary combustion to achieve the effect of reducing nitrogen oxides. However, when the existing boilers feed too much material, it is easy to cause the fuel to accumulate together, resulting in insufficient combustion and affecting the combustion effect. Moreover, the filter plate cannot be cleaned and impurities removed, and dust particle impurities are easily statically adhered and blocked on the filter plate in large quantities, resulting in a reduction in the ventilation efficiency of the filter plate, thus not meeting the usage requirements. Summary of the Invention

[0004] (1) Technical Problems to be Solved

[0005] Aiming at the deficiencies of the prior art, the purpose of the present invention is to provide a boiler that uses biomass powder fuel as a reducing agent for secondary combustion to reduce nitrogen oxides, which solves the problems that when the existing boilers feed too much material, it is easy to cause the fuel to accumulate together, resulting in insufficient combustion and affecting the combustion effect, and the filter plate cannot be cleaned and impurities removed, and dust particle impurities are easily statically adhered and blocked on the filter plate in large quantities, resulting in a reduction in the ventilation efficiency of the filter plate, thus not meeting the usage requirements.

[0006] (2) Technical Solutions

[0007] To achieve the above object, the present invention provides the following technical solutions. The technical solutions adopted by a boiler for reducing nitrogen oxides by secondary combustion with biomass powder fuel as a reducing agent are as follows: It includes a furnace body. The top of the furnace body is communicated with an exhaust pipe. The bottom of the exhaust pipe penetrates to the top of the inner cavity of the furnace body and is fixedly connected with a filter screen. On both sides of the top of the inner cavity of the furnace body, telescopic rods are fixedly connected. A first spring is sleeved on the surface of the telescopic rods. At the bottom of both telescopic rods, cross bars are fixedly connected. A shell is fixedly connected between the two cross bars. At the bottom of the inner cavity of the shell, a second spring is fixedly connected. The top of the second spring is fixedly connected with a limiting block. The top of the limiting block is fixedly connected with a support rod. The end of the support rod away from the limiting block penetrates to the top of the shell and is fixedly connected with an impact ball. On the opposite sides of the bottom of the cross bar, trapezoidal blocks are fixedly connected. At the bottom left of the furnace body, a buffer box is fixedly connected. Between the top and bottom of both sides of the inner cavity of the buffer box, guide columns are fixedly connected. A moving plate and a third spring are respectively sleeved on the surfaces of the two guide columns. At the bottom right of the furnace body, a drive box is fixedly connected. At the back of the inner cavity of the drive box, a first motor is fixedly connected. The output end of the first motor is fixedly connected with a turntable. At the top of the front of the turntable, a pin shaft is fixedly connected. A movable frame is slidably connected to the surface of the pin shaft. The left side of the movable frame is fixedly connected with a combustion plate. The end of the combustion plate away from the movable frame penetrates to the inner cavity of the buffer box and is fixedly connected with the moving plate. On both sides of the top of the combustion plate, support columns are fixedly connected. The end of the support column away from the combustion plate is movably connected with a roller.

[0008] As a preferred solution, the bottom of the furnace body is communicated with a waste residue box. The bottom of the waste residue box is fixedly connected with a second motor. The output end of the second motor is connected with a rotating shaft. The end of the rotating shaft away from the second motor penetrates to the top of the inner cavity of the waste residue box. A spiral blade is fixedly connected to the surface of the rotating shaft. The bottom right of the waste residue box is communicated with a slag discharge pipe.

[0009] As a preferred solution, a feeding port is arranged on the front of the furnace body. Legs are fixedly connected to the four corners of the bottom of the furnace body.

[0010] As a preferred solution, sliders are movably connected to both the top and bottom of the movable frame. Sliding grooves for cooperating with the sliders are opened at both the top and bottom of the inner cavity of the drive box.

[0011] As a preferred solution, the side of the roller away from the support column contacts the trapezoidal block. On the opposite sides of the cross bar, both contact the inner wall of the furnace body.

[0012] As a preferred solution, first openings are opened at the bottom of both sides of the inner cavity of the furnace body. A second opening is opened at the top of the shell.

[0013] As a preferred solution, both sides of the limiting block are in contact with the inner wall of the housing, and both ends of the first spring are fixedly connected to the cross bar and the inner wall of the furnace body respectively.

[0014] As a preferred solution, guide plates are fixedly connected to both sides of the bottom of the inner cavity of the furnace body, and both ends of the third spring are fixedly connected to the moving plate and the inner wall of the buffer box respectively.

[0015] (III) Beneficial effects

[0016] Compared with the prior art, the present invention provides a boiler for reducing nitrogen oxides by secondary combustion using biomass powder fuel as a reducing agent, having the following beneficial effects:

[0017] 1. Through the cooperation of the furnace body, exhaust pipe, filter screen, telescopic rod, first spring, cross bar, housing, second spring, limiting block, support rod, impact ball, trapezoidal block, buffer box, guide post, moving plate, third spring, drive box, first motor, turntable, pin shaft, movable frame, combustion plate, support column and roller, the present invention has the advantages of sufficient combustion and anti-blocking, and solves the problems that in the existing boiler, when too much fuel is fed, it is easy to cause the fuel to accumulate together, resulting in insufficient combustion, affecting the combustion effect, and being unable to clean and remove impurities from the filter plate, and dust particle impurities are likely to accumulate and block on the filter plate in large quantities, resulting in a reduction in the ventilation efficiency of the filter plate, thus unable to meet the use requirements.

[0018] 2. By setting the filter screen, the present invention can facilitate the filtration of dust particle impurities. By setting the impact ball, it can facilitate the knocking of the filter screen to prevent dust particle impurities from adhering and blocking on the filter screen. By setting the guide post, it can facilitate the improvement of the stability of the moving plate during movement. By setting the waste residue box, second motor, rotating shaft and spiral blade, it can facilitate the discharge of the waste residue after combustion. By setting the slider and the chute, it can facilitate the limitation of the movable frame to improve the stability of the movable frame during movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural diagram of the present invention;

[0020] Figure 2 is a schematic sectional view of the structure of the present invention;

[0021] Figure 3 is a side view schematic diagram of the first motor of the present invention;

[0022] Figure 4 is a schematic sectional view of the housing of the present invention;

[0023] Figure 5 is of the present invention Figure 2 an enlarged view of A in.

[0024] In the figure: 1, furnace body; 2, exhaust pipe; 3, filter screen; 4, telescopic rod; 5, first spring; 6, cross bar; 7, housing; 8, second spring; 9, limit block; 10, support rod; 11, impact ball; 12, trapezoidal block; 13, buffer box; 14, guide post; 15, moving plate; 16, third spring; 17, drive box; 18, first motor; 19, turntable; 20, pin shaft; 21, movable frame; 22, combustion plate; 23, support pillar; 24, roller; 25, waste residue box; 26, second motor; 27, rotating shaft; 28, spiral blade; 29, slider; 30, chute. Detailed implementation manner

[0025] The present invention will be further described and illustrated below in conjunction with specific embodiments and the accompanying drawings of the specification:

[0026] Please refer to Figures 1-5, the present invention: includes a furnace body 1, the top of the furnace body 1 is communicated with an exhaust pipe 2, the bottom of the exhaust pipe 2 penetrates to the top of the inner cavity of the furnace body 1 and is fixedly connected with a filter screen 3, both sides of the top of the inner cavity of the furnace body 1 are fixedly connected with telescopic rods 4, the surface of the telescopic rods 4 is sleeved with a first spring 5, the bottoms of the two telescopic rods 4 are fixedly connected with cross bars 6, a housing 7 is fixedly connected between the two cross bars 6, the bottom of the inner cavity of the housing 7 is fixedly connected with a second spring 8, the top of the second spring 8 is fixedly connected with a limiting block 9, the top of the limiting block 9 is fixedly connected with a support rod 10, the end of the support rod 10 away from the limiting block 9 penetrates to the top of the housing 7 and is fixedly connected with an impact ball 11, opposite sides of the bottom of the cross bar 6 are fixedly connected with trapezoidal blocks 12, the bottom of the left side of the furnace body 1 is fixedly connected with a buffer box 13, guide columns 14 are fixedly connected between the top and bottom of both sides of the inner cavity of the buffer box 13, the surfaces of the two guide columns 14 are respectively sleeved with a moving plate 15 and a third spring 16, the bottom of the right side of the furnace body 1 is fixedly connected with a drive box 17, a first motor 18 is fixedly connected to the back of the inner cavity of the drive box 17, the output end of the first motor 18 is fixedly connected with a turntable 19, a pin shaft 20 is fixedly connected to the top of the front surface of the turntable 19, the surface of the pin shaft 20 is slidably connected with a movable frame 21, the left side of the movable frame 21 is fixedly connected with a combustion plate 22, the end of the combustion plate 22 away from the movable frame 21 penetrates to the inner cavity of the buffer box 13 and is fixedly connected with the moving plate 15, both sides of the top of the combustion plate 22 are fixedly connected with support columns 23, the ends of the support columns 23 away from the combustion plate 22 are movably connected with rollers 24. After the first motor 18 is started, it drives the turntable 19 to rotate, the turntable 19 drives the pin shaft 20 to rotate, the pin shaft 20 drives the movable frame 21 to move left and right, the movable frame 21 drives the combustion plate 22 to move, the combustion plate 22 drives the moving plate 15 to move, and the third spring 16 facilitates the reset of the moving plate 15, thereby avoiding the accumulation of fuel on the combustion plate 22 and enabling the fuel to burn fully. At the same time, the combustion plate 22 drives the support column 23 to move, the support column 23 drives the roller 24 to squeeze the trapezoidal block 12, the trapezoidal block 12 drives the cross bar 6 to displace, the cross bar 6 drives the housing 7 to move, the housing 7 drives the second spring 8, the limiting block 9, the support rod 10 and the impact ball 11 to move, so that the impact ball 11 knocks on the filter screen 3, causing the filter screen 3 to vibrate, so that dust particle impurities fall off from the filter screen 3, so as to avoid the blockage of the filter screen 3 and improve the ventilation efficiency of the filter screen 3.

[0027] In this embodiment, specifically: the bottom of the furnace body 1 is communicated with a waste residue box 25, the bottom of the waste residue box 25 is fixedly connected with a second motor 26, the output end of the second motor 26 is connected with a rotating shaft 27, the end of the rotating shaft 27 away from the second motor 26 penetrates to the top of the inner cavity of the waste residue box 25, a spiral blade 28 is fixedly connected to the surface of the rotating shaft 27, the bottom of the right side of the waste residue box 25 is communicated with a slag discharge pipe. The second motor 26 drives the spiral blade 28 to rotate through the rotating shaft 27, thereby conveying the waste residue and facilitating its discharge.

[0028] In this embodiment, specifically: a feeding port is provided on the front of the furnace body 1, and legs are fixedly connected to the four corners of the bottom of the furnace body 1. The feeding port facilitates feeding into the furnace body 1, and the legs can improve the stability of the furnace body 1.

[0029] In this embodiment, specifically: sliders 29 are movably connected to the top and bottom of the movable frame 21, and chutes 30 for cooperating with the sliders 29 are provided at the top and bottom of the inner cavity of the drive box 17. The movable frame 21 is limited by the sliders 29 and the chutes 30 to improve the stability of the movable frame 21 during movement.

[0030] In this embodiment, specifically: the side of the roller 24 away from the support column 23 contacts the trapezoidal block 12, and the opposite sides of the cross bar 6 contact the inner wall of the furnace body 1. Through the contact positional relationship, transmission can be facilitated.

[0031] In this embodiment, specifically: first openings are provided at the bottoms of both sides of the inner cavity of the furnace body 1, and a second opening is provided at the top of the housing 7. Through the first opening, the movement of the combustion plate 22 can be facilitated, and through the second opening, the movement of the support rod 10 can be facilitated.

[0032] In this embodiment, specifically: both sides of the limiting block 9 contact the inner wall of the housing 7, and both ends of the first spring 5 are fixedly connected to the cross bar 6 and the inner wall of the furnace body 1 respectively. The limiting block 9 can improve its stability by contacting the inner wall of the housing 7.

[0033] In this embodiment, specifically: guide plates are fixedly connected to both sides of the bottom of the inner cavity of the furnace body 1, and both ends of the third spring 16 are fixedly connected to the movable plate 15 and the inner wall of the buffer box 13 respectively. Through the guide plates, the falling of waste residues can be facilitated, and the third spring 16 can facilitate the movement of the movable plate 15 by being fixedly connected to the movable plate 15 and the buffer box 13.

[0034] The working principle of the present invention is: start the first motor 18, the first motor 18 drives the turntable 19 to rotate, the turntable 19 drives the pin shaft 20 to rotate, the pin shaft 20 drives the movable frame 21 to move left and right, the movable frame 21 drives the combustion plate 22 to move, the combustion plate 22 drives the movable plate 15 to move, and the third spring 16 facilitates the reset of the movable plate 15, thereby preventing the fuel from accumulating on the combustion plate 22 and enabling the fuel to burn fully. At the same time, the combustion plate 22 drives the support column 23 to move, the support column 23 drives the roller 24 to squeeze the trapezoidal block 12, the trapezoidal block 12 drives the cross bar 6 to displace, the cross bar 6 drives the housing 7 to move, the housing 7 drives the second spring 8, the limiting block 9, the support rod 10 and the impact ball 11 to move, so that the impact ball 11 knocks on the filter screen 3, causing the filter screen 3 to vibrate, so that the dust particle impurities fall off from the filter screen 3, thereby preventing the filter screen 3 from being blocked and improving the ventilation efficiency of the filter screen 3.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting the protection scope of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. A boiler for reducing nitrogen oxides by secondary combustion using biomass powder fuel as a reducing agent, comprising a furnace body (1), characterized in that: The top of the furnace body (1) is connected to an exhaust pipe (2). The bottom of the exhaust pipe (2) penetrates through to the top of the inner cavity of the furnace body (1) and is fixedly connected to a filter screen (3). On both sides of the top of the inner cavity of the furnace body (1), telescopic rods (4) are fixedly connected. A first spring (5) is sleeved on the surface of the telescopic rod (4). The bottoms of the two telescopic rods (4) are both fixedly connected to a cross bar (6). A housing (7) is fixedly connected between the two cross bars (6). A second spring (8) is fixedly connected to the bottom of the inner cavity of the housing (7). The top of the second spring (8) is fixedly connected to a limiting block (9). The top of the limiting block (9) is fixedly connected to a support rod (10). One end of the support rod (10) away from the limiting block (9) penetrates through the top of the housing (7) and is fixedly connected to an impact ball (11). On the opposite sides of the bottom of the cross bar (6), trapezoidal blocks (12) are fixedly connected. The bottom of the left side of the furnace body (1) is fixedly connected to a buffer box (13). Guide posts (14) are fixedly connected between the top and bottom of both sides of the inner cavity of the buffer box (13). A moving plate (15) and a third spring (16) are respectively sleeved on the surfaces of the two guide posts (14). The bottom of the right side of the furnace body (1) is fixedly connected to a drive box (17). A first motor (18) is fixedly connected to the back of the inner cavity of the drive box (17). The output end of the first motor (18) is fixedly connected to a turntable (19). A pin shaft (20) is fixedly connected to the top of the front surface of the turntable (19). An activity frame (21) is slidably connected to the surface of the pin shaft (20). The left side of the activity frame (21) is fixedly connected to a combustion plate (22). One end of the combustion plate (22) away from the activity frame (21) penetrates through to the inner cavity of the buffer box (13) and is fixedly connected to the moving plate (15). On both sides of the top of the combustion plate (22), support columns (23) are fixedly connected. One end of the support column (23) away from the combustion plate (22) is movably connected to a roller (24).

2. A boiler for reducing nitrogen oxides by secondary combustion using biomass powder fuel as a reducing agent according to claim 1, characterized in that: The bottom of the furnace body (1) is connected to a waste residue box (25). The bottom of the waste residue box (25) is fixedly connected to a second motor (26). The output end of the second motor (26) is connected to a rotating shaft (27). One end of the rotating shaft (27) away from the second motor (26) penetrates through to the top of the inner cavity of the waste residue box (25). A spiral blade (28) is fixedly connected to the surface of the rotating shaft (27). The bottom of the right side of the waste residue box (25) is connected to a slag discharge pipe.

3. A boiler for reducing nitrogen oxides by secondary combustion with biomass powder fuel as a reducing agent according to claim 1, characterized in that: A feeding port is arranged on the front surface of the furnace body (1). Legs are fixedly connected to the four corners of the bottom of the furnace body (1).

4. A boiler for reducing nitrogen oxides by secondary combustion using biomass powder fuel as a reducing agent according to claim 1, characterized in that: Sliders (29) are movably connected to both the top and bottom of the activity frame (21). Sliding grooves (30) for cooperating with the sliders (29) are opened at both the top and bottom of the inner cavity of the drive box (17).

5. A boiler for reducing nitrogen oxides by secondary combustion using biomass powder fuel as a reducing agent according to claim 1, characterized in that: One side of the roller (24) away from the support column (23) contacts the trapezoidal block (12). The opposite sides of the cross bar (6) both contact the inner wall of the furnace body (1).

6. A boiler for reducing nitrogen oxides by secondary combustion using biomass powder fuel as a reducing agent according to claim 1, characterized in that: First openings are opened at the bottoms of both sides of the inner cavity of the furnace body (1). A second opening is opened at the top of the housing (7).

7. A boiler for reducing nitrogen oxides by secondary combustion using biomass powder fuel as a reducing agent according to claim 1, characterized in that: Both sides of the limiting block (9) are in contact with the inner wall of the housing (7), and both ends of the first spring (5) are fixedly connected to the cross bar (6) and the inner wall of the furnace body (1).

8. A boiler for reducing nitrogen oxides by secondary combustion using biomass powder fuel as a reducing agent according to claim 1, characterized in that: Both sides of the bottom of the inner cavity of the furnace body (1) are fixedly connected with material guiding plates, and both ends of the third spring (16) are fixedly connected to the inner wall of the moving plate (15) and the buffer box (13).

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