Boiler denitration spray gun

Abstract

The utility model discloses a boiler denitration spray gun, which relates to the technical field of denitration spray guns, and comprises a spray gun main body, a spray head, a liquid connecting pipe and a gas connecting pipe, one end of the spray gun main body is in threaded connection with the spray head, and one end of the spray gun main body far away from the spray head is connected with the liquid connecting pipe. According to the boiler denitration spray gun, when a reciprocating telescopic air cylinder operates, a connecting ring at the telescopic end can be driven to push a connecting column, at the moment, a rotating shaft at the bottom of the reciprocating telescopic air cylinder can rotate in a base, and when denitration solution is sprayed out of a spray head, a spray gun body and the spray head can swing back and forth through the reciprocating telescopic air cylinder; according to the flue gas denitration device, the spraying head can spray back and forth in a reciprocating mode, the coverage range of the sprayed denitration solution can be enlarged through the swinging spraying head, the coverage area of the denitration solution can be increased, and therefore the mixing area of the denitration solution and flue gas can be increased, and the flue gas denitration efficiency can be improved.

Description

Technical Field

[0001] This utility model relates to the field of denitrification spray gun technology, specifically a boiler denitrification spray gun. Background Technology

[0002] Boiler denitrification spray guns are key equipment used in selective non-catalytic reduction (SNCR) denitrification systems. They are mainly used to inject ammonia or urea solution into boiler flue gas to reduce nitrogen oxide (NOx) emissions. When in use, the denitrification spray gun uses high-speed compressed air to spray the solution from inside the nozzle.

[0003] In existing technologies, denitrification spray guns can denitrify the flue gas generated by boilers. Traditional denitrification spray guns are placed in a relatively fixed position, which in turn makes the position of the nozzle at the end of the spray gun relatively fixed, and the range of the solution sprayed by the nozzle relatively fixed. As a result, the denitrification coverage area of ​​the spray gun is relatively fixed, which leads to a small denitrification coverage area and affects the denitrification efficiency of the flue gas. Utility Model Content

[0004] The purpose of this invention is to provide a boiler denitrification spray gun to solve the problem of the relatively fixed denitrification coverage area of ​​the spray gun mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a boiler denitrification spray gun, comprising: a spray gun body, a nozzle, a liquid connecting pipe, and a gas connecting pipe. One end of the spray gun body is threadedly connected to the nozzle. The end of the spray gun body away from the nozzle is connected to the liquid connecting pipe. A gas connecting pipe is connected to the outer side of the spray gun body near the bottom of the liquid connecting pipe. A gas supply hose is sleeved at the end of the gas connecting pipe. A flange is connected to the outer side of the spray gun body. A base is provided below the spray gun body. A fixing post is connected to the surface of the base. A limit ring is connected to the outer side of the fixing post. The outer sides of the fixing post and the limit ring... A rotating cylinder is rotatably connected to the side of the base. An annular groove is formed on the inner side of the rotating cylinder near the limiting ring. A connecting plate is connected to the top of the rotating cylinder, and a plastic support base is connected to the top of the connecting plate. A slot is formed on the inner side of the plastic support base. A rotating block is connected to the outer side of the rotating cylinder. Connecting blocks are connected to the top and bottom of the rotating block. A connecting column is connected between the two connecting blocks. A reciprocating telescopic cylinder is provided on the surface of the base. A rotating shaft is connected to the bottom of the reciprocating telescopic cylinder. The rotating shaft at the bottom of the reciprocating telescopic cylinder and the base form a rotating structure. A connecting ring is connected to the telescopic end of the reciprocating telescopic cylinder.

[0006] Preferably, the connecting ring is located outside the connecting post, and the connecting ring and the connecting post form a rotating structure.

[0007] Preferably, the spray gun body and the plastic support base are connected by a locking mechanism via a slot.

[0008] Preferably, the rotating cylinder forms a rotating structure with the fixed column and the limiting ring.

[0009] Preferably, the connecting block is L-shaped, and the two connecting blocks and the connecting column are an integral structure.

[0010] Preferably, the spray gun body is made of 316L stainless steel, and the flange surface has a through hole.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: Before use, the spray gun body can be locked in the slots inside the two sets of plastic support seats. When the reciprocating telescopic cylinder is running, it can drive the connecting ring at the telescopic end to push the connecting column. At this time, the bottom shaft of the reciprocating telescopic cylinder can rotate inside the base. When the rotating cylinder moves, it can rotate along the outside of the fixed column and the limiting ring, so that the rotating cylinder can drive the connecting plate and the plastic support seat to rotate, thereby rotating the spray gun body and the nozzle. When the denitrification solution is sprayed out from inside the nozzle, the reciprocating telescopic cylinder can make the spray gun body and the nozzle swing back and forth, so that the nozzle can spray back and forth. The swinging nozzle can expand the coverage area of ​​the sprayed denitrification solution, thereby increasing the area covered by the denitrification solution and thus increasing the mixing area of ​​the denitrification solution with the flue gas, which helps to improve the efficiency of flue gas denitrification. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0013] Figure 2 This is a three-dimensional structural diagram of the plastic support base of this utility model;

[0014] Figure 3 This is a three-dimensional structural diagram of the rotating cylinder of this utility model;

[0015] Figure 4 This is a three-dimensional structural diagram of the reciprocating telescopic cylinder of this utility model;

[0016] Figure 5 This is a three-dimensional structural diagram of the base of this utility model.

[0017] In the diagram: 1. Spray gun body; 2. Nozzle; 3. Liquid connection pipe; 4. Gas connection pipe; 5. Gas supply hose; 6. Flange; 7. Base; 8. Fixing column; 9. Limiting ring; 10. Rotating cylinder; 11. Annular groove; 12. Connecting plate; 13. Plastic support base; 14. Slot; 15. Rotating block; 16. Connecting block; 17. Connecting column; 18. Reciprocating telescopic cylinder; 19. Connecting ring. Detailed Implementation

[0018] 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.

[0019] Please see Figure 1 and Figure 5 It is understood that this utility model provides a technical solution: a boiler denitrification spray gun, including: a spray gun body 1, a nozzle 2, a liquid connecting pipe 3 and a gas connecting pipe 4. One end of the spray gun body 1 is threadedly connected to the nozzle 2. The end of the spray gun body 1 away from the nozzle 2 is connected to the liquid connecting pipe 3. The bottom outer side of the spray gun body 1 near the liquid connecting pipe 3 is connected to the gas connecting pipe 4. The end of the gas connecting pipe 4 is sleeved with a gas supply hose 5. The outer side of the spray gun body 1 is connected to a flange 6. A base 7 is provided below the spray gun body 1.

[0020] The boiler de-pinning spray gun has a base 7 that provides stable support for the spray gun body 1.

[0021] exist Figure 1 , Figure 2 , Figure 3 and Figure 5 In the middle: a fixed column 8 is connected to the surface of the base 7, a limit ring 9 is connected to the outside of the fixed column 8, and a rotating cylinder 10 is rotatably connected to the outside of the fixed column 8 and the limit ring 9. An annular groove 11 is opened on the inner side of the rotating cylinder 10 near the limit ring 9. A connecting plate 12 is connected to the top of the rotating cylinder 10, and a plastic support seat 13 is connected to the top of the connecting plate 12. A slot 14 is opened on the inner side of the plastic support seat 13.

[0022] The boiler de-pin spray gun has a plastic support base 13 that can stably fix the spray gun body 1, making the spray gun body 1 less prone to loosening.

[0023] exist Figures 1-5In the middle section: A rotating block 15 is connected to the outer side of the rotating cylinder 10. A connecting block 16 is connected to the top and bottom of the rotating block 15. A connecting column 17 is connected between the two connecting blocks 16. A reciprocating telescopic cylinder 18 is provided on the surface of the base 7. A rotating shaft is connected to the bottom of the reciprocating telescopic cylinder 18. The rotating shaft at the bottom of the reciprocating telescopic cylinder 18 and the base 7 form a rotating structure. A connecting ring 19 is connected to the telescopic end of the reciprocating telescopic cylinder 18. The connecting ring 19 is located outside the connecting column 17. A rotating structure is formed between the connecting ring 19 and the connecting column 17. A locking structure is formed between the spray gun body 1 and the plastic support base 13 through the slot 14. A rotating structure is formed between the rotating cylinder 10, the fixed column 8, and the limiting ring 9. The connecting block 16 is L-shaped. The two connecting blocks 16 and the connecting column 17 are an integral structure. The spray gun body 1 is made of 316L stainless steel. A through hole is opened through the surface of the flange 6.

[0024] The boiler de-pin spray gun has a rotating shaft at the bottom of the reciprocating telescopic cylinder 18, which allows its telescopic end to rotate during telescopic movement, thus enabling the rotating cylinder 10 to rotate smoothly.

[0025] In practical implementation, the liquid connection pipe 3 on the denitrification spray gun is used to transport the denitrification solution into the spray gun body 1. Then, compressed air supplied through the gas connection pipe 4 and the air supply hose 5 sprays the solution out from the nozzle 2 at the end of the spray gun body 1. A through hole is provided on the surface of the flange 6 to connect the air supply hose 5. Compressed air is used to protect the spray gun body 1, ensuring that the compressed air flow is not interrupted due to the blockage of the nozzle 2, and providing continuous protection for the spray gun body 1. Before use, the spray gun body 1 can be locked in the slots 14 inside the two sets of plastic support seats 13. When in use, the spray gun body 1 can be reciprocated. When the reciprocating telescopic cylinder 18 is running, it can drive the connecting ring 19 at the telescopic end to push the connecting column 17. At this time, the bottom shaft of the reciprocating telescopic cylinder 18 can rotate inside the base 7. At the same time, the connecting column 17 can drive the connecting block 16 to move. When the connecting block 16 moves, it can drive the rotating block 15 to move. When the rotating block 15 moves, it can drive the rotating cylinder 10 to move. When the rotating cylinder 10 moves, it can rotate along the outside of the fixed column 8 and the limiting ring 9, so that the rotating cylinder 10 can drive the connecting plate 12 and the plastic support seat 13 to rotate, thereby the spray gun body 1 and the nozzle 2 rotate together.

[0026] See Figures 1-5It can be seen that when the denitrification solution is sprayed out from the nozzle 2, the reciprocating telescopic cylinder 18 can make the spray gun body 1 and the nozzle 2 swing back and forth, so that the nozzle 2 can spray back and forth. The swinging nozzle 2 can expand the coverage area of ​​the sprayed denitrification solution, thereby increasing the area covered by the denitrification solution and thus increasing the area of ​​mixing between the denitrification solution and the flue gas, which helps to improve the efficiency of denitrification of the flue gas.

[0027] In summary, when using this boiler denitrification spray gun, the reciprocating telescopic cylinder 18 can be activated. When the reciprocating telescopic cylinder 18 is running, it can drive the connecting ring 19 at the telescopic end to push the connecting column 17. At this time, the bottom shaft of the reciprocating telescopic cylinder 18 can rotate inside the base 7. When the denitrification solution is sprayed out from the nozzle 2, the reciprocating telescopic cylinder 18 can make the spray gun body 1 and the nozzle 2 swing back and forth, so that the nozzle 2 can spray back and forth. The swinging nozzle 2 can expand the coverage area of ​​the sprayed denitrification solution, thereby increasing the area covered by the denitrification solution and thus increasing the area of ​​mixing between the denitrification solution and the flue gas, which helps to improve the efficiency of flue gas denitrification. The contents not described in detail in this description belong to the prior art known to those skilled in the art.

[0028] 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 boiler descaling lance comprising: The spray gun body (1), nozzle (2), liquid connecting pipe (3), and gas connecting pipe (4) are characterized in that: One end of the spray gun body (1) is threaded with a nozzle (2), the end of the spray gun body (1) away from the nozzle (2) is connected to a liquid connection pipe (3), and the bottom outer side of the spray gun body (1) near the liquid connection pipe (3) is connected to a gas connection pipe (4). The gas connecting pipe (4) is fitted with a gas supply hose (5) at its end. A flange (6) is connected to the outside of the spray gun body (1). A base (7) is provided below the spray gun body (1). A fixing post (8) is connected to the surface of the base (7). A limit ring (9) is connected to the outside of the fixing post (8). A rotating cylinder (10) is rotatably connected to the outside of the fixing post (8) and the limit ring (9). An annular groove (11) is provided on the inner side of the rotating cylinder (10) near the limit ring (9). A connecting plate (12) is connected to the top of the rotating cylinder (10). A plastic plastic... The plastic support base (13) has a slot (14) on its inner side. The rotating cylinder (10) is connected to a rotating block (15) on its outer side. The top and bottom of the rotating block (15) are connected to connecting blocks (16). The two connecting blocks (16) are connected to a connecting column (17). The surface of the base (7) is provided with a reciprocating telescopic cylinder (18). The bottom of the reciprocating telescopic cylinder (18) is connected to a rotating shaft. The rotating shaft at the bottom of the reciprocating telescopic cylinder (18) and the base (7) form a rotating structure. The telescopic end of the reciprocating telescopic cylinder (18) is connected to a connecting ring (19).

2. The boiler descaling lance of claim 1, wherein: The connecting ring (19) is located outside the connecting post (17), and the connecting ring (19) and the connecting post (17) form a rotating structure.

3. The boiler descaling lance of claim 1, wherein: The spray gun body (1) and the plastic support base (13) are connected by a slot (14) to form a locking structure.

4. The boiler descaling lance of claim 1, wherein: The rotating cylinder (10) forms a rotating structure with the fixed column (8) and the limiting ring (9).

5. The boiler descaling lance of claim 2, wherein: The connecting block (16) is L-shaped, and the two connecting blocks (16) and the connecting column (17) are an integral structure.

6. The boiler descaling lance defined in claim 1, wherein: The spray gun body (1) is made of 316L stainless steel, and the flange (6) has through holes on its surface.

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