Anti-blocking device of desulfurization oxidation fan

Abstract

The utility model provides a desulfurization oxidation fan anti-blocking device, and belongs to the technical field of flue gas treatment.The desulfurization oxidation fan anti-blocking device comprises a reaction tank, the side wall of the reaction tank communicates with a gas inlet pipe and an oxygen conveying pipe, the end, away from the reaction tank, of the oxygen conveying pipe fixedly communicates with a fan, and a sprayer is arranged at the top of the reaction tank; a cleaning mechanism used for cleaning an air outlet of the oxygen conveying pipe is arranged in the reaction tank and comprises a first bevel gear aligned to the air outlet of the oxygen conveying pipe, one side of the first bevel gear is connected with the inner wall of the reaction tank through a first rotating rod, and a scraping plate is fixedly arranged on the other side of the first bevel gear; the end, away from the first bevel gear, of the scraper extends into the oxygen conveying pipe and is attached to the inner wall of the oxygen conveying pipe. Wherein the reaction tank is also provided with a driving mechanism for driving the first bevel gear to rotate. According to the device, through the arranged driving mechanism, the first bevel gear can be driven to rotate, so that the scraping plate is driven to rotate, and the rotating scraping plate can clean the inner wall of the oxygen conveying pipe.

Description

Technical Field

[0001] The present application belongs to the technical field of flue gas treatment, and specifically relates to a desulfurization oxidation fan anti-blocking device. Background Art

[0002] The oxidation fan is a pneumatic transmission device, and the external air enters the oxidation fan. The oxidation fan forms an airflow with a certain pressure flow under the action of the motor impeller, providing the corresponding medium for the required oxidation reaction. The oxidation air temperature is high. When the oxidation fan is running, its outlet air temperature is maintained at about 90°C, which makes the gypsum slurry on the inner wall of the oxidation air duct dehydrate quickly, especially at the exhaust hole position, which is easy to form a dry-wet interface. Since the slurry contains calcium sulfate, calcium sulfite, calcium carbonate and fly ash contains silicon, iron, aluminum and other substances, these substances have a large viscosity. After dehydration, they will adhere to the exhaust hole and form hard and dense gypsum scale, which will cause blockage.

[0003] In the patent document with application number CN202223001314.2, a desulfurization oxidation blower anti-blocking device is provided, in which an output shaft swing arm is driven to rotate by a motor, and a transmission plate is rotated under the action of the rotating output shaft swing arm and the fixed shaft bracket. The rotating transmission plate drives the scraper to rotate, and the rotating scraper cleans the inner wall of the oxygen supply pipe.

[0004] However, in the above document, the motor is arranged in the reaction tank near the outlet of the oxygen supply pipe, so the working environment temperature of the motor is relatively high, and the slurry will inevitably spray on the motor, making the motor wet. Therefore, the motor is in a high temperature and humid environment for a long time, causing the motor to be easily damaged. Utility Model Content

[0005] In order to solve the problem in the prior art that the motor is easily damaged due to being in a high temperature and humid environment for a long time, the present application provides a desulfurization oxidation fan anti-blocking device. In the present application, the driving mechanism provided can drive the first bevel gear to rotate, and the rotating first bevel gear drives the scraper to rotate to clean the inner wall of the oxygen delivery pipe, without using a motor, so there is no problem of easy damage to the motor.

[0006] The technical solution adopted by the anti-blocking device of a desulfurization oxidation fan in the present application is:

[0007] The present application provides a desulfurization oxidation fan anti-blocking device, comprising a reaction tank, a side wall of the reaction tank being connected with an air inlet pipe and an oxygen supply pipe, an end of the oxygen supply pipe away from the reaction tank being fixedly connected with a fan, and a sprayer being arranged on the top of the reaction tank, a cleaning mechanism for cleaning an air outlet of the oxygen supply pipe being arranged in the reaction tank, the cleaning mechanism comprising a first bevel gear aligned with the air outlet of the oxygen supply pipe, one side of the first bevel gear being connected to the inner wall of the reaction tank through a first rotating rod, a scraper being fixedly arranged on the other side of the first bevel gear, an end of the scraper away from the first bevel gear extending into the oxygen supply pipe and fitting against the inner wall of the oxygen supply pipe; wherein a driving mechanism for driving the first bevel gear to rotate is also arranged on the reaction tank.

[0008] In this further technical solution, exhaust gas is input into the reaction tank through the air inlet pipe, oxygen is input into the reaction tank through the fan and the oxygen supply pipe, and slurry is sprayed into the reaction tank through the sprayer. The exhaust gas, oxygen and slurry in the reaction tank react chemically, thereby absorbing harmful substances in the exhaust gas; when the oxygen supply pipe inputs oxygen into the reaction tank, the airflow generated can drive the first bevel gear to rotate through the driving mechanism, and the rotating first bevel gear drives the scraper to rotate. The rotating scraper can clean the inner wall of the oxygen supply pipe outlet, thereby preventing the oxygen supply pipe from being blocked; in the present application, the first bevel gear is driven to rotate by the airflow generated in the oxygen supply pipe, thereby eliminating the motor and the problem of easy damage to the motor.

[0009] Further, the driving mechanism includes a second bevel gear disposed in the reaction tank, the second bevel gear meshes with the first bevel gear, and the second bevel gear is connected to the inner wall of the reaction tank through a second rotating rod; wherein, one end of the second rotating rod away from the second bevel gear extends to the outside of the reaction tank and is fixedly sleeved with a first pulley. In this further technical solution, by driving the first pulley to rotate, the second rotating rod and the second bevel gear can be driven to rotate, thereby driving the first bevel gear and the scraper to rotate through the rotating second bevel gear, so as to facilitate the cleaning of the inner wall of the gas outlet of the oxygen supply tube.

[0010] Furthermore, a third rotating rod is rotatably arranged in the oxygen supply tube, a plurality of windshield plates are circumferentially arranged at one end of the third rotating rod, and the other end of the third rotating rod extends outside the oxygen supply tube and is fixedly sleeved with a second belt pulley, which is connected to the first belt pulley via a transmission belt. In this further technical solution, the airflow generated in the oxygen supply tube blows on the windshield plate, and the third rotating rod rotates under the continuous action of the airflow, and the rotating third rotating rod drives the second belt pulley to rotate, and the rotating second belt pulley drives the first belt pulley to rotate via the transmission belt.

[0011] Furthermore, an inclined wind guide plate is fixedly arranged on one side of the third rotating rod near the fan in the oxygen supply pipe, and the angle between the wind guide plate and the inner wall of the oxygen supply pipe is an acute angle. In this further technical solution, the wind guide plate can ensure that the airflow in the oxygen supply pipe blows on the wind shield, thereby causing the third rotating rod to rotate.

[0012] Furthermore, a drain valve is provided at the bottom of the reaction tank to prevent the oxygen delivery tube from backflowing, and a drain hole is provided at the bottom of the reaction tank corresponding to the position of the drain valve. In this further technical solution, after a certain volume of liquid accumulates at the bottom of the reaction tank, the drain valve is automatically opened to discharge the liquid from the reaction tank, thereby preventing the liquid from backflowing into the oxygen delivery tube as it increases.

[0013] Further, the drain valve includes a shell fixed to the bottom of the reaction tank, a blocking block for closing the drain hole is movably arranged in the shell, and a spring is arranged between the blocking block and the inner wall of the shell; wherein, a strip hole is opened in the side wall of the shell. In this further technical solution, the blocking block closes the drain hole under the action of the spring, and when there is too much liquid at the bottom of the reaction tank, the blocking block moves downward under the action of the gravity of the liquid, thereby opening the drain hole, and the liquid at the bottom of the reaction tank enters the shell through the drain hole, and the liquid in the shell is discharged through the strip hole, thereby discharging the liquid accumulated at the bottom of the reaction tank.

[0014] Furthermore, a sealing pad matching the drainage hole is arranged on one side of the blocking block away from the spring. In this further technical solution, the sealing pad can achieve a better sealing effect of the blocking block on the drainage hole.

[0015] The beneficial effects of the present application are as follows: 1. In the desulfurization oxidation fan anti-blocking device, exhaust gas is input into the reaction tank through the air inlet pipe, oxygen is input into the reaction tank through the fan and the oxygen supply pipe, and slurry is sprayed into the reaction tank through the sprayer. The exhaust gas, oxygen and slurry in the reaction tank react chemically, thereby absorbing harmful substances in the exhaust gas; when the oxygen supply pipe inputs oxygen into the reaction tank, the airflow generated will blow on the wind shield, and the third rotating rod will rotate under the continuous action of the airflow, and the rotating third rotating rod will drive the second pulley to rotate, and the rotating second pulley will drive the first pulley to rotate through the transmission belt, and by driving the first pulley to rotate, the second rotating rod and the second bevel gear can be driven to rotate, so that the first bevel gear and the scraper are driven to rotate by the rotating second bevel gear, so as to facilitate the cleaning of the inner wall of the air outlet of the oxygen supply pipe, thereby preventing the oxygen supply pipe from being blocked; in the present application, the first bevel gear is driven to rotate by the airflow generated in the oxygen supply pipe, thereby eliminating the motor and eliminating the problem of easy damage to the motor.

[0016] 2. In the desulfurization oxidation fan anti-blocking device, when there is too much liquid at the bottom of the reaction tank, the blocking block moves downward under the action of the gravity of the liquid, thereby opening the drainage hole, and the liquid at the bottom of the reaction tank enters the outer shell through the drainage hole, and the liquid in the outer shell is discharged through the strip hole, thereby discharging the liquid accumulated at the bottom of the reaction tank, preventing the liquid from flowing back into the oxygen supply pipe as the amount of liquid increases. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a desulfurization oxidation fan anti-blocking device provided in an embodiment of the present application;

[0018] Figure 2 It is a schematic cross-sectional structure diagram of a reaction tank of a desulfurization oxidation fan anti-blocking device provided in an embodiment of the present application;

[0019] Figure 3 It is a schematic cross-sectional structure diagram of an oxygen supply pipe of a desulfurization oxidation blower anti-blocking device provided in an embodiment of the present application;

[0020] Figure 4 It is a structural schematic diagram of a drain valve of a desulfurization oxidation blower anti-blocking device provided in an embodiment of the present application.

[0021] In the attached drawings: 1. reaction tank; 2. air inlet pipe; 3. oxygen supply pipe; 4. fan; 5. sprinkler; 6. first bevel gear; 7. first rotating rod; 8. scraper; 9. second bevel gear; 10. second rotating rod; 11. first pulley; 12. third rotating rod; 13. wind shield; 14. second pulley; 15. transmission belt; 16. wind guide plate; 17. drain valve; 18. drain hole; 19. outer casing; 20. sealing block; 21. spring; 22. strip hole; 23. sealing pad; 24. support leg. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the present application more clear, the present application is further described in detail below in combination with specific implementation methods and with reference to the accompanying drawings. In the following description, the description of the known structures and technologies is omitted to avoid unnecessary confusion of the concepts of the present application.

[0023] First reference Figure 1 ,according to Figure 1 It can be seen that the present application includes a reaction tank 1, a plurality of supporting legs 24 are fixedly arranged at the bottom of the reaction tank 1, an air inlet pipe 2 is fixedly connected to one side of the reaction tank 1, an oxygen supply pipe 3 is fixedly connected to the other side of the reaction tank 1, and the height of the oxygen supply pipe 3 is lower than the height of the air inlet pipe 2, and the end of the oxygen supply pipe 3 away from the reaction tank 1 is fixedly connected to a fan 4; continue to refer to Figure 1 The top of the reaction tank 1 is fixedly connected with a sprayer 5.

[0024] The reaction tank 1 is provided with a cleaning mechanism for cleaning the gas outlet of the oxygen delivery tube 3. The cleaning mechanism can be referred to in the specific setting. Figure 2 ,according to Figure 2 It can be seen that the cleaning mechanism includes a first bevel gear 6 arranged in the reaction tank 1, the first bevel gear 6 is aligned with the air outlet of the oxygen tube, and a scraper 8 is fixedly connected to the side of the first bevel gear 6 close to the oxygen tube, and the scraper 8 extends from one end of the scraper 8 away from the oxygen tube to the air outlet of the oxygen tube and fits with the inner wall of the oxygen tube, and the other side of the first bevel gear 6 is rotatably connected to the inner wall of the reaction tank 1 through a horizontal first rotating rod 7.

[0025] In order to facilitate the driving of the first bevel gear 6 to rotate, a driving mechanism is also provided in the present application. The driving mechanism can use the airflow generated in the oxygen tube to drive the first bevel gear 6 to rotate. The driving mechanism in the present application can refer to the specific setting of Figure 2 and Figure 3 ,according to Figure 2 It can be seen that the reaction tank 1 is also provided with a second bevel gear 9, which is meshed with the first bevel gear 6, and the second bevel gear 9 is rotatably connected to the bottom wall of the reaction tank 1 through a vertical second rotating rod 10; Figure 2 The bottom end of the second rotating rod 10 extends downward to the bottom of the reaction tank 1 and is fixedly sleeved with a first pulley 11; Figure 2 and Figure 3 It can be seen that a vertical third rotating rod 12 is rotatably connected inside the oxygen tube, and a plurality of windshield plates 13 are circumferentially fixedly connected to the top end of the third rotating rod 12. The bottom end of the third rotating rod 12 extends downward to the bottom of the oxygen tube and is fixedly sleeved with a second pulley 14, which is connected to the first pulley 11 through a transmission belt 15.

[0026] Continue to refer Figure 3 In order to ensure that the airflow generated in the oxygen tube can blow on the wind shield 13 to rotate the third rotating rod 12, an inclined wind guide plate 16 is fixedly connected to the oxygen tube. The angle between the wind guide plate 16 and the inner wall of the oxygen supply tube 3 is an acute angle, and the airflow generated in the oxygen tube can be blown toward the wind shield 13 under the action of the wind guide plate 16, so that the third rotating rod 12 can rotate smoothly.

[0027] When the present application is used, the slurry sprayed by the sprayer 5 gradually submerges the oxygen delivery pipe 3 upwards. If the fan 4 fails to start in time at this time, the slurry will flow back into the oxygen delivery pipe 3. On the contrary, after the fan 4 is stopped, if the fan 4 stops operating too early, the slurry level fails to drop below the oxygen delivery pipe 3 in time, which will also cause the slurry to flow back into the oxygen delivery pipe 3. In order to address the above situation, continue to refer to Figure 2 In the present application, a drain hole 18 is provided at the bottom of the reaction tank 1 , and a drain valve 17 for closing the drain hole 18 is provided below the reaction tank 1 .

[0028] In this application, the drain valve 17 can be referred to when it is specifically set. Figure 4 ,according to Figure 4 It can be seen that the drain valve 17 includes an outer shell 19 fixedly connected to the reaction tank 1, and a sealing block 20 that can move up and down is arranged in the outer shell 19. A sealing gasket 23 that matches the drain hole 18 is fixedly arranged above the sealing block 20, and a vertical spring 21 is fixedly connected below the sealing block 20. The bottom end of the spring 21 is fixedly connected to the bottom wall of the outer shell 19, and at least two strip holes 22 are opened on the side wall of the outer shell 19.

[0029] The working principle of the anti-blocking device of the desulfurization oxidation fan 4 is as follows: when the present application is used, exhaust gas is input into the reaction tank 1 through the air inlet pipe 2, oxygen is input into the reaction tank 1 through the fan 4 and the oxygen supply pipe 3, and slurry is sprayed into the reaction tank 1 through the sprayer 5. The exhaust gas, oxygen and slurry in the reaction tank 1 undergo a chemical reaction, thereby adsorbing harmful substances in the exhaust gas; and because the air inlet pipe 2 is located above the oxygen supply pipe 3, the density of the exhaust gas entering the reaction tank 1 through the air inlet pipe 2 is greater than that of the air, so that the exhaust gas moves downward in the reaction tank 1, and the rotating first bevel gear 6 and the second bevel gear 9 will play a certain stirring role. Under the action of the first bevel gear 6 and the second bevel gear 9, the exhaust gas moving downward will be fully mixed with the oxygen below, so that the exhaust gas can fully undergo a chemical reaction and fully adsorb the harmful substances in the exhaust gas.

[0030] When the oxygen supply tube 3 inputs oxygen into the reaction tank 1, the flow of oxygen will generate airflow in the oxygen supply tube 3. The airflow blows toward the wind shield 13 under the action of the wind guide plate 16. Under the action of the airflow, the third rotating rod 12 starts to rotate. The rotating third rotating rod 12 drives the second pulley 14 to rotate, and further drives the first pulley 11, the second rotating rod 10 and the second bevel gear 9 to rotate. The rotating second bevel gear 9 drives the first bevel gear 6, the first rotating rod 7 and the scraper 8 to rotate. When the scraper 8 rotates, it will rotate along the inner wall of the air inlet of the oxygen supply tube 3, so that the purpose of cleaning the air inlet of the oxygen supply tube 3 is achieved through the rotating scraper 8.

[0031] At the same time, when the slurry at the bottom of the reaction tank 1 reaches a certain height and does not submerge the oxygen supply pipe 3, the gravity of the slurry itself is greater than the elastic force of the spring 21. At this time, under the action of the slurry, the sealing gasket 23 and the blocking block 20 move downward in the outer shell 19, the spring 21 is compressed, and the drainage hole 18 is opened. At this time, the slurry at the bottom of the reaction tank 1 enters the outer shell 19 through the drainage hole 18, and the slurry in the outer shell 19 is discharged through the strip hole 22, thereby discharging the slurry accumulated at the bottom of the reaction tank 1 to prevent the slurry in the reaction tank 1 from submerging the oxygen supply pipe 3 and backflowing into the oxygen supply pipe 3; when the gravity of the slurry is less than the elastic force of the spring 21, under the action of the spring 21, the sealing gasket 23 and the blocking block 20 move upward in the outer shell 19 until the sealing gasket 23 enters the drainage hole 18 and completely closes the drainage hole 18.

[0032] In the above embodiment, the present application provides a desulfurization oxidation fan anti-blocking device, which inputs exhaust gas into the reaction tank through the air inlet pipe, inputs oxygen into the reaction tank through the fan and the oxygen supply pipe, and sprays slurry into the reaction tank through the sprayer, and the exhaust gas, oxygen and slurry in the reaction tank undergo a chemical reaction, thereby absorbing harmful substances in the exhaust gas; when the oxygen supply pipe inputs oxygen into the reaction tank, the airflow generated will blow on the wind shield, and the third rotating rod will rotate under the continuous action of the airflow, and the rotating third rotating rod will drive the second pulley to rotate, and the rotating second pulley will drive the first pulley to rotate through the transmission belt, and by driving the first pulley to rotate, the second rotating rod and the second bevel gear can be driven to rotate, thereby driving the first bevel gear and the scraper to rotate through the rotating second bevel gear, so as to facilitate the cleaning of the inner wall of the air outlet of the oxygen supply pipe, thereby preventing the oxygen supply pipe from being blocked; in the present application, the first bevel gear is driven to rotate by the airflow generated in the oxygen supply pipe, thereby eliminating the motor and eliminating the problem of easy damage to the motor.

[0033] In order to ensure the sealing performance in the present application, all rotating parts in the present application should be connected to the parts connected thereto in a rotating and sealing manner.

[0034] The embodiments described above are merely descriptions of the preferred implementation methods of the present application, and are not intended to limit the concept and scope of the present application. Without departing from the design concept of the present application, various modifications and improvements made to the technical solution of the present application by ordinary personnel in this field shall fall within the protection scope of the present application, and the technical contents for which protection is sought in the present application have been fully recorded in the claims.

Claims

1. A desulfurization oxidation fan anti-blocking device, comprising a reaction tank (1), the side wall of the reaction tank (1) is connected with an air inlet pipe (2) and an oxygen supply pipe (3), the end of the oxygen supply pipe (3) away from the reaction tank (1) is fixedly connected with a fan (4), and a sprayer (5) is arranged on the top of the reaction tank (1), characterized in that: The reaction tank (1) is provided with a cleaning mechanism for cleaning the air outlet of the oxygen supply pipe (3), the cleaning mechanism comprising a first bevel gear (6) aligned with the air outlet of the oxygen supply pipe (3), one side of the first bevel gear (6) is connected to the inner wall of the reaction tank (1) through a first rotating rod (7), and a scraper (8) is fixedly provided on the other side of the first bevel gear (6), the scraper (8) extends from one end of the first bevel gear (6) to the inside of the oxygen supply pipe (3) and fits with the inner wall of the oxygen supply pipe (3); wherein the reaction tank (1) is also provided with a driving mechanism for driving the first bevel gear (6) to rotate; the driving mechanism comprises a second bevel gear (9) arranged in the reaction tank (1), the second bevel gear (9) meshing with the first bevel gear (6), and the second bevel gear (9) The oxygen supply pipe (3) is connected to the inner wall of the reaction tank (1) through a second rotating rod (10); wherein one end of the second rotating rod (10) away from the second bevel gear (9) extends to the outside of the reaction tank (1) and is fixedly sleeved with a first pulley (11); a third rotating rod (12) is rotatably arranged in the oxygen supply pipe (3), one end of the third rotating rod (12) is circumferentially provided with a plurality of wind shielding plates (13), the other end of the third rotating rod (12) extends to the outside of the oxygen supply pipe (3) and is fixedly sleeved with a second pulley (14), the second pulley (14) is connected to the first pulley (11) through a transmission belt (15); an inclined wind guide plate (16) is fixedly arranged in the oxygen supply pipe (3) on the side of the third rotating rod (12) close to the fan (4), and the angle between the wind guide plate (16) and the inner wall of the oxygen supply pipe (3) is an acute angle.

2. A desulfurization oxidation fan anti-blocking device according to claim 1, characterized in that: The bottom of the reaction tank (1) is provided with a drain valve (17) for preventing the oxygen supply pipe (3) from backflowing, and the bottom of the reaction tank (1) is provided with a drain hole (18) at a position corresponding to the drain valve (17).

3. A desulfurization oxidation fan anti-blocking device according to claim 2, characterized in that: The drain valve (17) comprises a shell (19) fixed to the bottom of the reaction tank (1), a sealing block (20) for closing the drain hole (18) is movably arranged in the shell (19), and a spring (21) is arranged between the sealing block (20) and the inner wall of the shell (19); wherein a strip hole (22) is opened on the side wall of the shell (19).

4. A desulfurization oxidation fan anti-blocking device according to claim 3, characterized in that: A sealing gasket (23) matching with the liquid discharge hole (18) is provided on the side of the sealing block (20) away from the spring (21).

Images