SCR denitration device with cleaning function for boiler

Abstract

The invention belongs to the technical field of denitration devices, and discloses a boiler SCR denitration device with a cleaning function, the boiler SCR denitration device comprises a shell, the middle of the left end of the shell is fixedly sleeved with a smoke inlet pipe, the bottom of the right end of the shell is fixedly provided with a smoke exhaust pipe, and the bottom end of the shell is fixedly provided with a blow-off pipe; the middle of the top end of the shell is movably sleeved with a vertical pipe. By arranging the vertical pipe, the spraying pipe, the driven gear, the first motor and the driving gear, when the first motor is started, the rotating shaft drives the driving gear to rotate, and due to the fact that the outer surface of the driving gear is meshed with the outer surface of the driven gear, along with rotation of the driving gear, the driven gear drives the spraying pipe to rotate through the vertical pipe; deionized water is uniformly sprayed on the outer surface of the ceramic fiber filter pipe through rotation of the spraying pipe, so that residual dust and soluble salts on the outer surface of the ceramic fiber filter pipe are cleaned, and the service life of the ceramic fiber filter pipe is prolonged.

Description

Technical Field

[0001] The invention belongs to the technical field of de-pinching devices, and in particular relates to an SCR de-pinching device for a boiler with a cleaning function. Background Art

[0002] A boiler is an energy conversion device. The energy input into the boiler includes chemical energy and electrical energy in the fuel. The boiler outputs steam, high-temperature water or organic heat carrier with a certain amount of thermal energy. It is widely used in industrial production, heating, power generation and other fields. It is an indispensable and important equipment in modern industry and life. According to its use, it can be divided into industrial boilers, power station boilers and domestic boilers; according to the fuel, it can be divided into coal-fired boilers, oil-fired boilers, gas-fired boilers, etc.

[0003] During the use of boilers, in order to prevent flue gas from causing serious pollution to the environment, a corresponding SCR denitrification device is required. Under the action of the catalyst inside the SCR denitrification device, the reducing agent and the nitrogen oxides in the flue gas undergo a chemical reaction to achieve efficient denitrification of the flue gas. However, in actual use, it still has some shortcomings. When the SCR denitrification device is in use, a corresponding blower is required to spray the ceramic fiber filter tube to blow off the dust attached to the outer surface of the ceramic fiber filter tube. However, this spraying method cannot ensure that the dust is completely removed. Some dust will still adhere to the gaps in the filter tube, and the soluble salts condensed on the outer surface of the filter tube cannot be blown off, so this needs to be improved. Summary of the Invention

[0004] The object of the present invention is to provide a boiler SCR de-pinning device with a cleaning function to solve the problems raised in the above background technology.

[0005] In order to achieve the above-mentioned object, the present invention provides the following technical solution: A boiler SCR depinning device with a cleaning function, comprising a shell, a smoke inlet pipe fixedly sleeved in the middle of the left end of the shell, a smoke exhaust pipe fixedly installed at the bottom of the right end of the shell, a sewage pipe fixedly installed at the bottom end of the shell, a vertical pipe movably sleeved in the middle of the top end of the shell, the bottom end of the vertical pipe passes through the shell and extends into the interior of the shell and is fixedly sleeved with a spray pipe, a rotary joint fixedly installed at the top end of the shell, a round block fixedly sleeved on the outer surface of the vertical pipe, the top end of the round block is movably connected to the top of the inner surface of the shell, a driven gear fixedly sleeved on the outer surface of the vertical pipe, the bottom end of the driven gear movably connected to the top end of the shell, a first motor fixedly installed on the left side of the middle of the top end of the shell, a rotating shaft fixedly sleeved on the other end of the output shaft of the first motor, a driving gear fixedly installed on the bottom end of the rotating shaft, the bottom end of the driving gear movably connected to the top end of the shell, and the outer surface of the driving gear is meshed with the outer surface of the driven gear.

[0006] As a preferred embodiment of the present invention, a ceramic fiber filter tube is fixedly sleeved on the bottom of the inner part of the outer shell, a smoke guide tube is fixedly sleeved on the bottom end of the ceramic fiber filter tube, the right end of the smoke guide tube passes through the outer shell and the smoke exhaust pipe and extends to the interior of the smoke exhaust pipe, and the outer surface of the smoke guide tube is fixedly sleeved on the inner surface of the right end of the outer shell.

[0007] As a preferred embodiment of the present invention, the left and right sides inside the shell are respectively movably connected with circular shafts located below the spray pipe, the number of the circular shafts is two, the outer surfaces of the two circular shafts are respectively fixedly connected with partition plates, the number of the two partition plates is two, the outer surfaces of the two partition plates are respectively movably connected with the inner surface of the shell, and the two partition plates are movably connected.

[0008] As a preferred embodiment of the present invention, the rear ends of the two circular shafts respectively penetrate the outer shell and extend to the outside of the outer shell and are fixedly sleeved with a rotating rod, the outer surface of the rotating rod is movably connected to the outer surface of the outer shell, there are two rotating rods, and short rods are fixedly installed on the top of the rear ends of the two rotating rods.

[0009] As a preferred embodiment of the present invention, the rear end of the shell is fixedly installed with a fixed rod located below the rotating rod, and the left and right sides of the top of the fixed rod are respectively fixedly installed with limiting rods, the top of the outer surface of the limiting rod is fixedly sleeved with a block, and the top of the outer surface of the limiting rod is movably sleeved with a long rod, the top of the long rod and the bottom end of the block are movably connected, and the inner surfaces of the left and right ends of the long rod are respectively movably sleeved with the outer surface of the short rod.

[0010] As a preferred embodiment of the present invention, a second motor is fixedly installed on the top of the middle part of the rear end of the shell, and a threaded rod is fixedly sleeved on the other end of the output shaft of the second motor. The bottom of the outer surface of the threaded rod and the inner surface of the middle end of the fixed rod are movably sleeved, and the outer surface of the threaded rod and the inner surface of the middle end of the long rod are threadedly sleeved.

[0011] As a preferred embodiment of the present invention, a positioning gear is fixedly sleeved on the top of the outer surface of the threaded rod, and a locking block is movably connected to the right side of the outer surface of the positioning gear.

[0012] As a preferred embodiment of the present invention, the right end of the locking block is movably sleeved with a fixed column, the front end of the fixed column and the rear end of the shell are fixedly connected, the middle end of the locking block is fixedly sleeved with a round rod, and the outer surface of the round rod is movably sleeved with the inner surface of the fixed column.

[0013] As a preferred embodiment of the present invention, a spring located outside the round rod is fixedly installed on the front side of the left end of the fixed column, the other end of the spring is fixedly connected to the inner surface of the locking block, and a cover plate is fixedly sleeved on the front side of the outer surface of the fixed column. There are two cover plates, and the opposite surfaces of the two cover plates are movably connected to the front and rear ends of the locking block respectively.

[0014] The beneficial effects of the present invention are as follows:

[0015] 1. The present invention is provided with a vertical pipe, a spray pipe, a driven gear, a first motor and a driving gear. When the first motor is started, the rotating shaft will drive the driving gear to rotate. Since the outer surfaces of the driving gear and the outer surfaces of the driven gear are engaged with each other, as the driving gear rotates, the driven gear will rotate with the spray pipe through the vertical pipe, so that the deionized water is evenly sprayed on the outer surface of the ceramic fiber filter tube through the rotation of the spray pipe, thereby cleaning the dust and soluble salts remaining on the outer surface of the ceramic fiber filter tube, thereby extending the service life of the ceramic fiber filter tube.

[0016] 2. The present invention sets a circular shaft, a partition plate, a rotating rod, a short rod and a long rod. When the second motor is started, the threaded rod will rotate. Since the outer surface of the threaded rod and the inner surface of the long rod are threadedly connected, the long rod will move as the threaded rod rotates, so that the inner surface of the long rod generates a thrust on the short rod, pushing the short rod to rotate with the rotating rod around the circular shaft, so that the partition plate rotates with the circular shaft. In this way, the smoke can be prevented from eroding the vertical pipe and the sprinkler pipe by opening and closing the partition plate.

[0017] 3. The present invention provides a positioning gear, a locking block, a fixed column, a round rod and a spring. When the threaded rod rotates, the positioning gear fixedly connected to the threaded rod will rotate together, so that the teeth on the outer surface of the positioning gear squeeze the locking block, and then the locking block moves along the fixed column with the round rod and continues to compress the spring. Under the restoring action of the spring, when the threaded rod and the positioning gear stop rotating, the locking block will return to its original position, thereby re-locking the positioning gear to prevent the threaded rod and the positioning gear from rotating accidentally after the second motor stops. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the present invention;

[0019] Figure 2 It is a schematic cross-sectional structural diagram of the front side of the present invention;

[0020] Figure 3 Schematic diagram of the cross-sectional structure of the long rod of the present invention;

[0021] Figure 4 It is a schematic cross-sectional structural diagram of the fixing column of the present invention;

[0022] Figure 5 for Figure 2 Schematic diagram of the local enlarged structure at A in the middle;

[0023] Figure 6 for Figure 3 Schematic diagram of the local enlarged structure at B in the middle;

[0024] Figure 7 for Figure 3 Schematic diagram of the local enlarged structure at C in the middle;

[0025] Figure 8 for Figure 4 Schematic diagram of the local enlarged structure at point D in the middle.

[0026] In the figure: 1. outer shell; 2. smoke inlet pipe; 3. smoke exhaust pipe; 4. sewage pipe; 5. vertical pipe; 6. spray pipe; 7. rotary joint; 8. round block; 9. driven gear; 10. first motor; 11. rotating shaft; 12. driving gear; 13. ceramic fiber filter tube; 14. smoke guide pipe; 15. round shaft; 16. partition plate; 17. rotating rod; 18. short rod; 19. fixed rod; 20. limiting rod; 21. block; 22. long rod; 23. second motor; 24. threaded rod; 25. positioning gear; 26. locking block; 27. fixing column; 28. round rod; 29. ​​spring; 30. cover plate. DETAILED DESCRIPTION

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0028] like Figures 1 to 8 As shown, an embodiment of the present invention provides an SCR de-pinning device for a boiler with a cleaning function, comprising a shell 1, a smoke inlet pipe 2 fixedly sleeved in the middle of the left end of the shell 1, a smoke exhaust pipe 3 fixedly installed at the bottom of the right end of the shell 1, a sewage pipe 4 fixedly installed at the bottom end of the shell 1, a vertical pipe 5 movably sleeved in the middle of the top end of the shell 1, the bottom end of the vertical pipe 5 passes through the shell 1 and extends to the interior of the shell 1 and is fixedly sleeved with a spray pipe 6, a rotary joint 7 fixedly installed at the top end of the shell 1, and a round block fixedly sleeved on the outer surface of the vertical pipe 5 8. The top of the round block 8 is movably connected to the top of the inner surface of the shell 1. The outer surface of the vertical tube 5 is fixedly sleeved with a driven gear 9. The bottom end of the driven gear 9 is movably connected to the top of the shell 1. The first motor 10 is fixedly installed on the left side of the middle of the top of the shell 1. The other end of the output shaft of the first motor 10 is fixedly sleeved with a rotating shaft 11. The bottom end of the rotating shaft 11 is fixedly installed with a driving gear 12. The bottom end of the driving gear 12 is movably connected to the top of the shell 1. The outer surface of the driving gear 12 is meshed with the outer surface of the driven gear 9.

[0029] The rotary joint 7 is connected to the external water supply pipe, so that the deionized water is input into the spray pipe 6 through the rotary joint 7 and the vertical pipe 5 through the external water supply pipe, and then sprayed out from the spray pipe 6. At the same time, when the first motor 10 is started, the rotating shaft 11 will drive the driving gear 12 to rotate, so that the driven gear 9 meshing with the driving gear 12 rotates with the vertical pipe 5 and the spray pipe 6, and the deionized water can be evenly sprayed out, thereby achieving the cleaning of the SCR de-pinning device, thereby preventing the residue of dust and soluble salts.

[0030] Among them, a ceramic fiber filter tube 13 is fixedly sleeved on the bottom of the shell 1, and a smoke guide tube 14 is fixedly sleeved on the bottom end of the ceramic fiber filter tube 13. The right end of the smoke guide tube 14 passes through the shell 1 and the smoke exhaust pipe 3 and extends to the interior of the smoke exhaust pipe 3. The outer surface of the smoke guide tube 14 is fixedly sleeved on the inner surface of the right end of the shell 1.

[0031] The interior of the ceramic fiber filter tube 13 is impregnated with a catalyst. When the boiler flue gas passes through, the dust in the flue gas will be blocked outside by the ceramic fiber filter tube 13 and the flue gas will be denitrified by the catalyst inside the ceramic fiber filter tube 13. The treated flue gas will be discharged into the exhaust pipe 3 through the smoke guide pipe 14.

[0032] Among them, the left and right sides inside the shell 1 are respectively movably connected with the circular shaft 15 located below the spray pipe 6. There are two circular shafts 15. The outer surfaces of the two circular shafts 15 are respectively fixedly connected with partition plates 16. There are two partition plates 16. The outer surfaces of the two partition plates 16 are respectively movably connected with the inner surface of the shell 1, and the two partition plates 16 are movably connected.

[0033] Due to the presence of the partition plate 16 , the internal space of the shell 1 is divided, thereby preventing smoke from entering the upper part of the internal space of the shell 1 and causing erosion and damage to the vertical pipe 5 and the spray pipe 6 .

[0034] Among them, the rear ends of the two circular shafts 15 respectively pass through the outer shell 1 and extend to the outside of the outer shell 1 and are fixedly sleeved with a rotating rod 17. The outer surface of the rotating rod 17 is movably connected to the outer surface of the outer shell 1. There are two rotating rods 17, and short rods 18 are fixedly installed on the top of the rear ends of the two rotating rods 17.

[0035] When the short rod 18 is pushed by the push rod, the rotating rod 17 will rotate with the circular shaft 15 as the axis. At this time, the rotating rod 17 will rotate with the partition plate 16 through the circular shaft 15, thereby rotating the partition plate 16 open, making it easier for the spray pipe 6 to spray and clean the ceramic fiber filter tube 13.

[0036] Among them, the rear end of the shell 1 is fixedly installed with a fixed rod 19 located below the rotating rod 17, and the left and right sides of the top of the fixed rod 19 are respectively fixedly installed with a limit rod 20, the top of the outer surface of the limit rod 20 is fixedly sleeved with a stop block 21, and the top of the outer surface of the limit rod 20 is movably sleeved with a long rod 22, the top of the long rod 22 and the bottom end of the stop block 21 are movably connected, and the inner surfaces of the left and right ends of the long rod 22 are respectively movably sleeved with the outer surface of the short rod 18.

[0037] When the long rod 22 moves downward along the outer surface of the limit rod 20, since the short rod 18 is movably sleeved inside the long rod 22, as the long rod 22 moves, the inner surface of the long rod 22 will generate a thrust on the outer surface of the short rod 18, pushing the short rod 18 to rotate with the rotating rod 17 around the circular shaft 15 as the axis.

[0038] Among them, a second motor 23 is fixedly installed on the top middle part of the rear end of the shell 1, and a threaded rod 24 is fixedly sleeved on the other end of the output shaft of the second motor 23. The bottom of the outer surface of the threaded rod 24 and the inner surface of the middle end of the fixed rod 19 are movably sleeved, and the outer surface of the threaded rod 24 and the inner surface of the middle end of the long rod 22 are threadedly sleeved.

[0039] When the second motor 23 is started, the threaded rod 24 is rotated, so that the long rod 22 threadedly connected to the threaded rod 24 moves along the outer surface of the limiting rod 20 .

[0040] A positioning gear 25 is fixedly sleeved on the top of the outer surface of the threaded rod 24 , and a locking block 26 is movably connected to the right side of the outer surface of the positioning gear 25 .

[0041] When the threaded rod 24 rotates, the positioning gear 25 is driven to rotate together, so that the teeth on the outer surface of the positioning gear 25 squeeze the locking block 26, causing the locking block 26 to move. When the threaded rod 24 and the positioning gear 25 stop rotating, the locking block 26 returns to its original position and re-locks the positioning gear 25.

[0042] Among them, the right end of the locking block 26 is movably connected to a fixed column 27, the front end of the fixed column 27 is fixedly connected to the rear end of the shell 1, and the middle end of the locking block 26 is fixedly connected to a round rod 28, and the outer surface of the round rod 28 is movably connected to the inner surface of the fixed column 27.

[0043] The cooperation between the fixing column 27 and the round rod 28 will support and limit the locking block 26, thereby ensuring the stability of the movement of the locking block 26.

[0044] Among them, a spring 29 located outside the round rod 28 is fixedly installed on the front side of the left end of the fixed column 27, and the other end of the spring 29 is fixedly connected to the inner surface of the locking block 26. A cover plate 30 is fixedly sleeved on the front side of the outer surface of the fixed column 27. There are two cover plates 30, and the opposite surfaces of the two cover plates 30 are movably connected to the front and rear ends of the locking block 26 respectively.

[0045] The spring 29 is in a compressed state. When the locking block 26 moves along the outer surface of the fixing column 27, it will continue to squeeze the spring 29. Under the restoring action of the spring 29, the locking block 26 will be forced to return to its original position. The presence of the cover plate 30 can protect the spring 29.

[0046] Working principle and usage process:

[0047] When the ceramic fiber filter tube 13 needs to be cleaned, the operator first stops the flue gas delivery and starts the second motor 23, causing the threaded rod 24 to rotate, thereby causing the long rod 22 threadedly connected to the threaded rod 24 to move downward along the outer surface of the limit rod 20, and then the inner surfaces of the left and right ends of the long rod 22 respectively generate a thrust on the short rod 18, pushing the short rod 18 to rotate with the rotating rod 17 around the circular shaft 15 as the axis. At this time, the partition plate 16 will rotate along with the circular shaft 15, thereby rotating the partition plate 16 open, releasing the isolation protection of the partition plate 16 on the vertical pipe 5 and the spray pipe 6.

[0048] Then the operator can input deionized water into the vertical pipe 5 and the spray pipe 6 through the rotary joint 7. At the same time, the operator starts the first motor 10, so that the rotating shaft 11 drives the driving gear 12 to rotate, thereby causing the driven gear 9 meshing with the driving gear 12 to rotate with the vertical pipe 5 and the spray pipe 6, and then the deionized water is evenly sprayed onto the outer surface of the ceramic fiber filter tube 13 through the spray pipe 6, thereby cleaning the dust and soluble salts remaining on the outer surface of the ceramic fiber filter tube 13, thereby extending the service life of the ceramic fiber filter tube 13.

[0049] As the threaded rod 24 rotates, the positioning gear 25 will rotate along with it, so that the teeth on the outer surface of the positioning gear 25 will squeeze the locking block 26. At this time, the locking block 26 will move along the outer surface of the fixing column 27 and continue to compress the spring 29. When the threaded rod 24 and the positioning gear 25 stop rotating, the spring 29 will restore the locking block 26 to its original position and re-lock the positioning gear 25. This can prevent the threaded rod 24 and the positioning gear 25 from rotating accidentally after the second motor 23 stops, thereby changing the position of the partition plate 16, thereby improving the stability of the partition plate 16.

[0050] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0051] While 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 these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A boiler SCR de-pinning device with a cleaning function, comprising a housing (1), characterized in that: A smoke inlet pipe (2) is fixedly sleeved in the middle of the left end of the shell (1), a smoke exhaust pipe (3) is fixedly installed at the bottom of the right end of the shell (1), a sewage discharge pipe (4) is fixedly installed at the bottom end of the shell (1), a vertical pipe (5) is movably sleeved in the middle of the top end of the shell (1), the bottom end of the vertical pipe (5) passes through the shell (1) and extends to the interior of the shell (1) and is fixedly sleeved with a spray pipe (6), a rotary joint (7) is fixedly installed at the top end of the shell (1), a round block (8) is fixedly sleeved on the outer surface of the vertical pipe (5), and the top end of the round block (8) and the inner surface of the shell (1) are connected. The top of the housing (1) is movably connected, the outer surface of the vertical tube (5) is fixedly sleeved with a driven gear (9), the bottom end of the driven gear (9) is movably connected to the top of the housing (1), a first motor (10) is fixedly installed on the left side of the middle of the top of the housing (1), the other end of the output shaft of the first motor (10) is fixedly sleeved with a rotating shaft (11), the bottom end of the rotating shaft (11) is fixedly installed with a driving gear (12), the bottom end of the driving gear (12) is movably connected to the top of the housing (1), and the outer surface of the driving gear (12) is meshed with the outer surface of the driven gear (9).

2. The SCR de-pinning device for a boiler with a cleaning function according to claim 1, characterized in that: A ceramic fiber filter tube (13) is fixedly sleeved on the bottom of the interior of the shell (1), a smoke guide tube (14) is fixedly sleeved on the bottom end of the ceramic fiber filter tube (13), the right end of the smoke guide tube (14) passes through the shell (1) and the smoke exhaust pipe (3) and extends to the interior of the smoke exhaust pipe (3), and the outer surface of the smoke guide tube (14) is fixedly sleeved on the inner surface of the right end of the shell (1).

3. The SCR de-pinning device for a boiler with a cleaning function according to claim 1, characterized in that: The left and right sides of the interior of the shell (1) are movably sleeved with circular shafts (15) located below the spray pipe (6), the number of the circular shafts (15) being two, the outer surfaces of the two circular shafts (15) being fixedly sleeved with partition plates (16), the number of the two partition plates (16) being two, the outer surfaces of the two partition plates (16) being movably sleeved with the inner surface of the shell (1), and the two partition plates (16) being movably connected to each other.

4. The SCR de-pinning device for a boiler with a cleaning function according to claim 3, characterized in that: The rear ends of the two circular shafts (15) respectively penetrate the outer shell (1) and extend to the outside of the outer shell (1) and are fixedly sleeved with a rotating rod (17). The outer surface of the rotating rod (17) is movably connected to the outer surface of the outer shell (1). There are two rotating rods (17). Short rods (18) are fixedly installed on the tops of the rear ends of the two rotating rods (17).

5. The SCR de-pinning device for a boiler with a cleaning function according to claim 1, characterized in that: A fixing rod (19) located below the rotating rod (17) is fixedly installed at the rear end of the housing (1), and a limiting rod (20) is fixedly installed on the left and right sides of the top of the fixing rod (19), and a stopper (21) is fixedly sleeved on the top of the outer surface of the limiting rod (20), and a long rod (22) is movably sleeved on the top of the outer surface of the limiting rod (20), and the top of the long rod (22) is movably connected to the bottom end of the stopper (21), and the inner surfaces of the left and right ends of the long rod (22) are movably sleeved on the outer surface of the short rod (18).

6. The SCR de-pinning device for a boiler with a cleaning function according to claim 1, characterized in that: A second motor (23) is fixedly mounted on the top end of the middle portion of the rear end of the housing (1); a threaded rod (24) is fixedly sleeved on the other end of the output shaft of the second motor (23); the bottom of the outer surface of the threaded rod (24) is movably sleeved on the inner surface of the middle end of the fixed rod (19); and the outer surface of the threaded rod (24) is threadedly sleeved on the inner surface of the middle end of the long rod (22).

7. The SCR de-pinning device for a boiler with a cleaning function according to claim 6, characterized in that: A positioning gear (25) is fixedly sleeved on the top of the outer surface of the threaded rod (24), and a locking block (26) is movably connected to the right side of the outer surface of the positioning gear (25).

8. The SCR de-pinning device for a boiler with a cleaning function according to claim 7, characterized in that: The right end of the interior of the locking block (26) is movably sleeved with a fixing column (27), the front end of the fixing column (27) is fixedly connected to the rear end of the housing (1), and the middle end of the interior of the locking block (26) is fixedly sleeved with a round rod (28), the outer surface of the round rod (28) is movably sleeved with the inner surface of the fixing column (27).

9. The SCR de-pinning device for a boiler with a cleaning function according to claim 8, characterized in that: A spring (29) located outside the round rod (28) is fixedly installed on the front side of the left end of the fixing column (27), and the other end of the spring (29) is fixedly connected to the inner surface of the locking block (26). A cover plate (30) is fixedly sleeved on the front side of the outer surface of the fixing column (27). There are two cover plates (30), and the opposite surfaces of the two cover plates (30) are movably connected to the front and rear ends of the locking block (26) respectively.

Images