SCR denitration spray gun structure

Abstract

This application provides an SCR denitrification spray gun structure, belonging to the field of boiler denitrification technology. The SCR denitrification spray gun structure includes a urea spray gun and a second pipeline. A cleaning mechanism and a moving mechanism are provided on one side of the urea spray gun. By controlling the opening of an electric valve, low-pressure steam is delivered into the interior of the urea spray gun. Simultaneously, by controlling the rotation of the output shaft of a first motor, a rotating plate is driven to rotate, moving the cleaning component to one side of the nozzle. Then, by controlling the rotation of the output shaft of a second motor, the urea crystals adhering to the outer surface of the nozzle are cleaned through the rotation of the cleaning component. This solves the problem that existing urea spray guns require disassembly and offline cleaning with hot water. Since most urea spray guns use threaded grooves and nuts to connect the pipeline, disassembly increases the workload for workers.

Description

Technical Field

[0001] This application relates to the field of boiler denitrification, and more specifically, to an SCR denitrification spray gun structure. Background Technology

[0002] The boiler SCR (Selective Catalytic Reduction) denitrification device utilizes the selective catalytic reduction reaction between urea and NOx to generate harmless nitrogen and water. Urea is added into the urea pyrolysis device through a urea spray gun. After a period of use, the urea spray gun needs to be cleaned regularly to avoid frequent clogging.

[0003] However, the existing SCR denitrification spray gun structure still has the following shortcomings during use: When cleaning the existing urea spray gun, it is necessary to disassemble the urea spray gun and then use hot water to clean the urea spray gun offline. Since most urea spray guns use threaded grooves and nuts to connect the pipes, the workload of the staff is increased when disassembling the urea spray gun. Utility Model Content

[0004] To overcome the above shortcomings, this application provides an SCR denitrification spray gun structure, which aims to improve the existing urea spray gun. During cleaning, the urea spray gun needs to be disassembled and then cleaned offline with hot water. Since most urea spray guns use threaded grooves and nuts to connect to the pipes, the disassembly of the urea spray gun increases the workload of the workers.

[0005] This application provides an SCR denitrification spray gun structure, including a urea spray gun and a second pipe. A cleaning mechanism for cleaning urea spray paint is provided on one side of the urea spray gun, and a moving mechanism is provided on one side of the urea spray gun.

[0006] The cleaning mechanism includes a first pipe, which is located on one side of the urea spray gun. One end of the first pipe is connected to a second pipe, and the other end of the first pipe is connected to a low-pressure steam input device. Steam is generated by the low-pressure steam input device, then transported through the first pipe to the inside of the second pipe, and then to the inside of the urea spray gun. The steam cleans the inside of the urea spray gun and the areas through which the urea passes. The low-pressure steam input device is existing technology and will not be described in detail here.

[0007] In one specific implementation, the liquid input end of the urea spray gun is connected to one end of the second pipe, and the gas input end of the urea spray gun is connected to the third pipe.

[0008] In the above implementation process, the second pipe allows urea solution to be transported into the urea spray gun, and the third pipe allows compressed air to be transported into the urea spray gun.

[0009] In one specific implementation, the output end of the urea spray gun is connected to a nozzle.

[0010] In the above process, by setting the nozzle, the urea solution that has been input can be sprayed out from the nozzle by compressed air under the action of the urea spray gun.

[0011] In one specific implementation, an electric valve is connected to the middle section of the first pipeline.

[0012] In the above implementation process, by setting an electric valve, the electric valve can be closed when conveying urea solution to prevent urea solution from flowing into the inside of the first pipe, and the electric valve can be opened when conveying low-pressure steam to convey low-pressure steam into the inside of the urea spray gun through the second pipe.

[0013] In one specific implementation, the outer surface of the urea spray gun is connected to a mounting component, the top of the mounting component is connected to a first motor, and a rotating plate is provided on one side of the first motor.

[0014] In the above implementation process, by setting up the first motor, the output shaft of the first motor can be controlled to rotate, thereby driving the rotating plate to rotate.

[0015] In one specific implementation, a second motor is connected to one side of the rotating plate, the output end of the second motor passes through the rotating plate and is connected to a cleaning component, and the cleaning component is rotatably disposed on the other side of the rotating plate.

[0016] In the above implementation process, by setting the rotating plate, the cleaning component can be rotated when the rotating plate rotates, so that the cleaning component moves to one side of the nozzle. By controlling the output shaft of the second motor to rotate, the cleaning component can be rotated, so that when the urea spray gun sprays low-pressure steam, the urea crystals adhering to the outer surface of the nozzle can be cleaned by the rotation of the cleaning component.

[0017] In one specific implementation, the moving mechanism includes a circular plate connected to the output shaft of a first motor, a telescopic damping rod connected to the other end of the circular plate, the other end of the telescopic damping rod connected to the other side of a rotating plate, and a spring sleeved on the outer surface of the telescopic damping rod.

[0018] In the above implementation process, by setting the spring, when the cleaning part is above the nozzle, the spring is in a stretched state, and when the cleaning part is on the side of the nozzle, the spring can release elastic potential energy to drive the telescopic damping rod to retract.

[0019] In one specific implementation, a sliding groove is provided on the other side of the rotating plate, and a crossbar is connected to one end of the first motor, with one end of the crossbar sliding inside the sliding groove.

[0020] In the above implementation process, by setting the sliding groove, when the output shaft of the first motor rotates, it can drive the rotating part to rotate, and drive one end of the crossbar to slide inside the sliding groove.

[0021] In one specific implementation, the rotating plate has an insertion hole inside, and one end of the crossbar is movably inserted into the insertion hole.

[0022] In the above implementation process, by setting the insertion hole, when the insertion hole is rotated to one side of the crossbar, the spring releases elastic potential energy, causing one end of the crossbar to be inserted into the insertion hole, which can drive the rotating plate to move, causing the cleaning component to move. When the cleaning component moves to one side of the nozzle, the cleaning component will move a certain distance towards the nozzle, so that one side of the cleaning component wraps around the nozzle, improving the cleaning effect of the cleaning component.

[0023] In one specific implementation, a contact surface is provided at one end of the crossbar.

[0024] In the above implementation process, by setting the contact surface, after one end of the crossbar is inserted into the socket, when the output shaft of the first motor rotates again through the contact surface, one end of the crossbar can disengage from the slot, causing the rotating part to move away from the nozzle and stretch the spring.

[0025] Compared with the prior art, the beneficial effects of this application are as follows: By setting up the cleaning mechanism and the moving mechanism, low-pressure steam is delivered into the urea spray gun by controlling the opening of the electric valve. At the same time, by controlling the output shaft of the first motor to rotate, the rotating plate is driven to rotate, which in turn drives the cleaning component to rotate, moving the cleaning component to one side of the nozzle. As the rotating plate rotates, one end of the crossbar slides inside the sliding groove. When the insertion hole rotates to one side of the crossbar, the spring releases its elastic potential energy, causing one end of the crossbar to insert into the insertion hole, which in turn drives the rotating plate to move, thus moving the cleaning component. When the cleaning component moves to one side of the nozzle, it will move towards the nozzle. A certain distance is provided so that one side of the cleaning component wraps around the nozzle, improving the cleaning effect. Then, by controlling the output shaft of the second motor to rotate, the cleaning component rotates. When the urea spray gun sprays low-pressure steam, the rotation of the cleaning component cleans the urea crystals adhering to the outer surface of the nozzle. This allows for cleaning of the urea spray gun without disassembling it, thus solving the problem that existing urea spray guns require disassembly and offline cleaning with hot water. Since most urea spray guns use threaded grooves and nuts to connect to the pipes, disassembly increases the workload for workers. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of an SCR denitrification spray gun structure provided in an embodiment of this application;

[0028] Figure 2 A schematic diagram of the urea spray gun structure provided for an embodiment of this application;

[0029] Figure 3 A schematic diagram of the electric valve structure provided for an embodiment of this application;

[0030] Figure 4 A schematic diagram of the first motor structure provided for an embodiment of this application;

[0031] Figure 5 for Figure 4 Enlarged view of point A in the middle;

[0032] Figure 6 A schematic diagram of the sliding groove structure provided for an embodiment of this application;

[0033] Figure 7 A schematic diagram of the second motor structure provided for an embodiment of this application;

[0034] Figure 8 A schematic diagram of the crossbar structure provided for an embodiment of this application.

[0035] In the diagram: 1. Urea spray gun; 2. Cleaning mechanism; 201. Electric valve; 202. Mounting component; 203. First pipe; 204. First motor; 205. Rotating plate; 206. Cleaning component; 207. Second motor; 3. Moving mechanism; 301. Telescopic damping rod; 302. Spring; 303. Sliding groove; 304. Insertion hole; 305. Crossbar; 306. Contact surface; 307. Circular plate; 4. Second pipe; 5. Third pipe; 6. Nozzle. Detailed Implementation

[0036] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0037] Please see Figure 1 and Figure 2 This application provides an SCR denitrification spray gun structure, including a urea spray gun 1 and a second pipe 4.

[0038] Please see Figure 1 A cleaning mechanism 2 for cleaning urea spray paint is provided on one side of the urea spray gun 1, and a moving mechanism 3 is provided on one side of the urea spray gun 1.

[0039] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 The cleaning mechanism 2 includes a first pipe 203, which is located on one side of the urea spray gun 1. One end of the first pipe 203 is connected to a second pipe 4, and the other end of the first pipe 203 is connected to a low-pressure steam input device. Steam is generated by the low-pressure steam input device and then transported through the first pipe 203 to the inside of the second pipe 4, and then to the inside of the urea spray gun 1. The steam cleans the inside of the urea spray gun 1 and the areas where the urea passes. The low-pressure steam input device is existing technology and will not be described in detail here.

[0040] In the specific setup, the liquid input end of the urea spray gun 1 is connected to one end of the second pipe 4, and the gas input end of the urea spray gun 1 is connected to the third pipe 5. The second pipe 4 allows urea solution to be transported into the urea spray gun 1, and the third pipe 5 allows compressed air to be transported into the urea spray gun 1.

[0041] In a specific configuration, the output end of the urea spray gun 1 is connected to a nozzle 6. Through the configuration of the nozzle 6, the urea solution that has been input can be sprayed out by compressed air through the nozzle 6 under the action of the urea spray gun 1.

[0042] In a specific configuration, the middle section of the first pipe 203 is connected to an electric valve 201. The electric valve 201 can be closed when conveying urea solution to prevent urea solution from flowing into the interior of the first pipe 203. When conveying low-pressure steam, the electric valve 201 can be opened to convey low-pressure steam through the second pipe 4 into the interior of the urea spray gun 1.

[0043] In a specific configuration, a mounting component 202 is connected to the outer surface of the urea spray gun 1, and a first motor 204 is connected to the top of the mounting component 202. A rotating plate 205 is provided on one side of the first motor 204. By setting the first motor 204, the rotating plate 205 can be rotated by controlling the output shaft of the first motor 204 to rotate.

[0044] In a specific configuration, a second motor 207 is connected to one side of the rotating plate 205. The output end of the second motor 207 passes through the rotating plate 205 and is connected to a cleaning component 206. The cleaning component 206 is rotatably mounted on the other side of the rotating plate 205. By configuring the rotating plate 205, the cleaning component 206 can be rotated when the rotating plate 205 rotates, causing the cleaning component 206 to move to one side of the nozzle 6. By controlling the output shaft of the second motor 207 to rotate, the cleaning component 206 can be rotated. When the urea spray gun 1 sprays low-pressure steam, the rotation of the cleaning component 206 can clean the urea crystals adhering to the outer surface of the nozzle 6.

[0045] In a specific configuration, the moving mechanism 3 includes a circular plate 307 connected to the output shaft of the first motor 204. The other end of the circular plate 307 is connected to a telescopic damping rod 301, and the other end of the telescopic damping rod 301 is connected to the other side of the rotating plate 205. A spring 302 is sleeved on the outer surface of the telescopic damping rod 301. The spring 302 is in a stretched state when the cleaning component 206 is above the nozzle 6, and when the cleaning component 206 is on one side of the nozzle 6, the spring 302 releases elastic potential energy to drive the telescopic damping rod 301 to retract.

[0046] In a specific configuration, a sliding groove 303 is provided on the other side of the rotating plate 205. One end of the first motor 204 is connected to a crossbar 305, and one end of the crossbar 305 slides inside the sliding groove 303. By providing the sliding groove 303, when the output shaft of the first motor 204 rotates, it can drive the rotating component to rotate, thereby causing one end of the crossbar 305 to slide inside the sliding groove 303.

[0047] In the specific configuration, the rotating plate 205 has an insertion hole 304 inside, and one end of the crossbar 305 is movably inserted into the insertion hole 304. Through the setting of the insertion hole 304, when the insertion hole 304 rotates to one side of the crossbar 305, the spring 302 releases elastic potential energy, causing one end of the crossbar 305 to be inserted into the insertion hole 304, which can drive the rotating plate 205 to move, causing the cleaning component 206 to move. When the cleaning component 206 moves to one side of the nozzle 6, the cleaning component 206 will move a certain distance closer to the nozzle 6, so that one side of the cleaning component 206 covers the nozzle 6, improving the cleaning effect of the cleaning component 206.

[0048] In a specific configuration, one end of the crossbar 305 is provided with a contact surface 306. Through the provision of the contact surface 306, after one end of the crossbar 305 is inserted into the insertion hole 304, when the output shaft of the first motor 204 rotates again through the contact surface 306, one end of the crossbar 305 can disengage from the slot, causing the rotating part to move away from the nozzle 6 and stretching the spring 302.

[0049] The working principle of this SCR denitrification spray gun structure is as follows: When using the SCR denitrification spray gun structure, the electric valve 201 is opened to deliver low-pressure steam into the urea spray gun 1. Simultaneously, the output shaft of the first motor 204 is rotated, causing the rotating plate 205 to rotate, which in turn causes the cleaning component 206 to rotate, moving it to one side of the nozzle 6. As the rotating plate 205 rotates, one end of the crossbar 305 slides inside the sliding groove 303. When the insertion hole 304 rotates to one side of the crossbar 305, the spring 302 releases its elastic potential energy, causing one end of the crossbar 305 to insert into the insertion hole 304, which in turn moves the rotating plate 205, thus moving the cleaning component 206. When the cleaning component 206 moves to one side of the nozzle 6, the cleaning component 206... 06 will move a certain distance closer to the nozzle 6, so that one side of the cleaning component 206 wraps around the nozzle 6, improving the cleaning effect of the cleaning component 206. Then, by controlling the output shaft of the second motor 207 to rotate, the cleaning component 206 will rotate. When the urea spray gun 1 sprays low-pressure steam, the rotation of the cleaning component 206 can clean the urea crystals adhering to the outer surface of the nozzle 6. This allows the urea spray gun 1 to be cleaned without disassembling it, thus solving the problem that the existing urea spray gun 1 needs to be disassembled and cleaned offline with hot water. Since most urea spray guns 1 use threaded grooves and nuts to connect the pipes, disassembling the urea spray gun 1 increases the workload of the staff.

[0050] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An SCR De-NOx lance structure, characterized by, include Urea spray gun (1) and second pipe (4), a cleaning mechanism (2) for cleaning urea spray paint is provided on one side of the urea spray gun (1), and a moving mechanism (3) is provided on one side of the urea spray gun (1). The cleaning mechanism (2) includes a first pipe (203), which is located on one side of the urea spray gun (1), and one end of the first pipe (203) is connected to a second pipe (4).

2. The SCR denitration lance structure according to claim 1, characterized in that, The liquid input end of the urea spray gun (1) is connected to one end of the second pipe (4), and the gas input end of the urea spray gun (1) is connected to the third pipe (5).

3. The SCR denitration spray gun structure according to claim 2, characterized in that, The output end of the urea spray gun (1) is connected to a nozzle (6).

4. The SCR denitration spray gun structure according to claim 3, characterized in that, An electric valve (201) is connected to the middle section of the first pipe (203).

5. The SCR denitration spray gun structure according to claim 4, characterized in that, The outer surface of the urea spray gun (1) is connected to a mounting part (202), and the top of the mounting part (202) is connected to a first motor (204). A rotating plate (205) is provided on one side of the first motor (204).

6. The SCR denitration spray gun structure according to claim 5, characterized in that, A second motor (207) is connected to one side of the rotating plate (205). The output end of the second motor (207) passes through the rotating plate (205) and is connected to a cleaning component (206). The cleaning component (206) is rotatably disposed on the other side of the rotating plate (205).

7. The SCR denitration spray gun structure according to claim 1, characterized in that, The moving mechanism (3) includes a circular plate (307) connected to the output shaft of the first motor (204). The other end of the circular plate (307) is connected to a telescopic damping rod (301), and the other end of the telescopic damping rod (301) is connected to the other side of the rotating plate (205). A spring (302) is sleeved on the outer surface of the telescopic damping rod (301).

8. The SCR denitration spray gun structure according to claim 7, characterized in that, A sliding groove (303) is provided on the other side of the rotating plate (205), and a crossbar (305) is connected to one end of the first motor (204), and one end of the crossbar (305) slides inside the sliding groove (303).

9. The SCR denitration spray gun structure according to claim 8, characterized in that, The rotating plate (205) has an insertion hole (304) inside, and one end of the crossbar (305) is movably inserted into the insertion hole (304).

10. The SCR denitrification spray gun structure according to claim 9, characterized in that, One end of the crossbar (305) is provided with a contact surface (306).

Images