Power station boiler dust removal and purification device

Abstract

The utility model discloses a dedusting and purifying device for a power station boiler, and relates to the technical field of purifying devices. A lantern ring is arranged at one end in the purification tank, a filter screen is arranged in the lantern ring, a conical box is arranged at the position, above the filter screen, of the purification tank, the bottom of the conical box is communicated with a guide pipe, the bottom of the guide pipe is communicated with a water spraying pipe, and the center of the top of the conical box is rotationally connected with a first rotating shaft; the bottom of the first rotating shaft extends into the guide pipe and is fixedly connected with turbine blades, a second rotating shaft is rotationally connected to the position, adjacent to the lantern ring, of the purification tank, the first rotating shaft and the second rotating shaft are in transmission connection through a synchronous belt, a gear ring is arranged at one end of the outer wall of the lantern ring, and a gear is arranged at one end of the second rotating shaft; the gear ring is in meshed connection with the gear; through the design of the turbine blades, the filter screen can rotate in the water spraying process of the water spraying pipe, so that the cleaning effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of purification devices, in particular to a dust removal and purification device for a power plant boiler. Background Art

[0002] Coal-fired power plant boilers produce a large amount of flue gas when working. The flue gas contains a large amount of dust, sulfur dioxide, sulfur trioxide and other pollutants. Direct emission will cause serious pollution to the atmospheric environment. Therefore, the flue gas needs to be dust-removed and purified. At this time, a power plant boiler dust removal and purification device is needed.

[0003] After searching, a Chinese patent with publication number CN219922449U discloses a power plant boiler dust removal and purification device, including a purification box, a rotating circular plate is horizontally installed at the center position of the upper inner cavity of the purification box, a driven wheel is horizontally installed at the center position of the top of the rotating circular plate, a first connecting rod is longitudinally installed around the outer side of the bottom of the rotating circular plate, the bottom end of the first connecting rod is hinged to the second connecting rod, the bottom end of the second connecting rod is hinged to the third connecting rod, and a spray circular plate is transversely added to the bottom end of the third connecting rod, and the bottom of the spray circular plate is evenly connected to the spray head in the longitudinal direction; the power plant boiler dust removal and purification device drives the rotating circular plate to rotate through the driven wheel, and the rotating circular plate drives the spray circular plate and the spray head to rotate, and under the action of the first connecting rod, the second connecting rod and the third connecting rod that are hinged to each other, the spray angle can be changed. In this way, the spray range of the spray structure is improved;

[0004] In the above technology, although the spray structure is designed to spray the agent to further purify the flue gas, the above device is not provided with a mechanism for cleaning the internal filter plate. Therefore, when cleaning the filter plate, the staff needs to disassemble it for cleaning, which is very inconvenient.

[0005] To this end, the utility model provides a power plant boiler dust removal and purification device. Utility Model Content

[0006] In order to solve the problem that the internal filter screen of the existing power plant boiler dust removal and purification device is inconvenient to clean; the purpose of the utility model is to provide a power plant boiler dust removal and purification device.

[0007] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0008] A dust removal and purification device for a power plant boiler includes a purification tank, a collar at one end of the purification tank, a filter screen provided in the collar, a conical box provided above the filter screen, a conical box bottom connected to a conduit, a water spray pipe connected to the bottom of the conduit, a first rotating shaft rotatably connected to the center of the top of the conical box, the bottom of the first rotating shaft extends into the conduit and is fixedly connected to a turbine blade, the purification tank is rotatably connected to a second rotating shaft at an adjacent position of the collar, the first rotating shaft and the second rotating shaft are connected by a synchronous belt drive, a gear ring is provided at one end of the outer wall of the collar, a gear is provided at one end of the second rotating shaft, and the gear ring is meshed with the gear.

[0009] In a possible implementation, the bottom of the purification tank is connected to a drain pipe, and one end of the drain pipe is slidably connected to a gate plate.

[0010] In one possible implementation, a water pump is provided adjacent to the purification tank, the output end of the water pump is connected to a first connecting tube, one end of the first connecting tube is connected to a piston tube, the top of the piston tube is connected to a second connecting tube away from the end of the first connecting tube, and one end of the second connecting tube is connected to the top of the conical box.

[0011] In one possible implementation, one end of the gate plate is fixedly connected to a support frame, and the support frame is fixedly connected to an end of the support frame away from the gate plate. One end of the slide rod extends into the interior of the piston tube and is fixedly connected to a movable plate. Both the slide rod and the movable plate are slidably connected to the piston tube.

[0012] In a possible implementation, a spring is fixedly connected to one end of the inner wall of the support frame away from the gate plate, and a telescopic rod is fixedly connected to the support frame inside the spring. Both the spring and the telescopic rod are fixedly connected to the drain pipe.

[0013] In a possible implementation, a guide groove is provided on the inner wall of the conical box, and a brush plate is fixedly connected to the inner wall of the purification tank below the filter screen.

[0014] In one possible implementation, a first synchronous wheel is fixedly connected to the top of the first rotating shaft, a second synchronous wheel is fixedly connected to the top of the second rotating shaft, the first synchronous wheel and the second synchronous wheel are both engaged with a synchronous belt, a fixing ring is fixedly connected to one end of the inner wall of the purification tank, the sleeve is rotatably connected in the fixing ring, and the second rotating shaft is rotatably connected to one end of the top of the fixing ring.

[0015] In one possible implementation, one end of the side wall of the purification tank is connected to an air inlet pipe, the air inlet pipe is located below the filter, a valve is installed at one end of the air inlet pipe, the top of the purification tank is connected to an exhaust pipe, four support legs are fixedly connected to the bottom of the purification tank, the bottom of the support legs is fixedly connected to a base, one end of the base is fixedly connected to a support column, and the support column is fixedly connected to the piston tube.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. The utility model uses a water pump to transport the cleaning liquid to the water spray pipe, so that the cleaning liquid can be sprayed out from the nozzle of the water spray pipe to flush the filter screen. Through the design of the turbine blades, the cleaning liquid can drive the first rotating shaft to rotate when flowing through the cone box and the guide tube, thereby driving the second rotating shaft and the gear to rotate, and then driving the gear ring to rotate, thereby driving the collar and the filter screen to rotate. During the rotation of the filter screen, the water spray pipe can fully flush the filter screen;

[0018] 2. When the utility model delivers the cleaning liquid into the piston tube through the water pump, the water pressure in the piston tube will gradually increase, thereby pushing the movable plate to move, and then driving the slide rod and the support frame to move, thereby driving the gate plate to move, allowing the drain pipe to open. At this time, the waste water generated when the filter screen is cleaned can be discharged smoothly. When the filter screen is cleaned, the water pump will be turned off. At this time, the water pressure in the piston tube will decrease. At this time, the spring will rebound, thereby driving the gate plate to reset, thereby sealing the drain pipe, preventing smoke from being discharged through the drain pipe without being filtered. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the side cross-sectional structure of the purification tank in the present utility model;

[0022] Figure 3 for Figure 2 Another perspective structural diagram;

[0023] Figure 4 This is a schematic diagram of the side cross-section structure of the tapered box in the present invention;

[0024] Figure 5This is a schematic diagram of the connection structure between the gate and the drainage pipe in the present utility model;

[0025] Figure 6 It is a schematic diagram of the side sectional structure of the piston tube in the present utility model.

[0026] In the figure: 1. purification tank; 2. collar; 3. filter screen; 4. conical box; 5. conduit; 6. water spray pipe; 7. first rotating shaft; 8. turbine blade; 9. second rotating shaft; 10. synchronous belt; 11. gear ring; 12. gear; 13. drain pipe; 14. gate; 15. water pump; 16. first connecting pipe; 17. piston tube; 18. second connecting pipe; 19. support frame; 20. slide rod; 21. movable plate; 22. spring; 23. telescopic rod; 24. guide groove; 25. brush plate; 26. first synchronous wheel; 27. second synchronous wheel; 28. fixed ring; 29. ​​intake pipe; 30. valve; 31. exhaust pipe; 32. support leg; 33. base; 34. support column. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described 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] Example: Figure 1-6 As shown, the utility model provides a dust removal and purification device for a power plant boiler, including a purification tank 1, a collar 2 at one end of the purification tank 1, a filter screen 3 is arranged in the collar 2, a conical box 4 is arranged above the filter screen 3, the bottom of the conical box 4 is connected to a conduit 5, the bottom of the conduit 5 is connected to a water spray pipe 6, the top center of the conical box 4 is rotatably connected to a first rotating shaft 7, the bottom of the first rotating shaft 7 extends into the conduit 5 and is fixedly connected to a turbine blade 8, the purification tank 1 is located at an adjacent position of the collar 2 and is rotatably connected to a second rotating shaft 9, the first rotating shaft 7 and the second rotating shaft 9 are connected by a synchronous belt 10, a gear ring 11 is arranged at one end of the outer wall of the collar 2, a gear 12 is arranged at one end of the second rotating shaft 9, and the gear ring 11 is meshed with the gear 12;

[0029] In one possible embodiment, when the filter 3 needs to be cleaned, cleaning liquid is transported into the conical box 4. At this time, the cleaning liquid will flow into the conduit 5 along the inner wall of the conical box 4, and flow into the water spray pipe 6 through the conduit 5, and finally be sprayed out from the nozzle at the bottom of the water spray pipe 6, thereby flushing the filter 3. In the process of the cleaning liquid flowing through the conduit 5, it will drive the turbine blades 8 to rotate, thereby driving the first rotating shaft 7 to rotate. At this time, the second rotating shaft 9 will rotate synchronously with the first rotating shaft 7 under the transmission action of the synchronous belt 10, thereby driving the gear 12 to rotate. When the gear 12 rotates, it will drive the gear ring 11 to rotate, thereby driving the ring 2 and the filter 3 to rotate. During the rotation of the filter 3, the water spray pipe 6 can fully flush the filter 3.

[0030] The bottom of the purification tank 1 is connected to a drain pipe 13, and one end of the drain pipe 13 is slidably connected to a gate plate 14;

[0031] In one possible embodiment, the wastewater generated when flushing the filter 3 will be discharged through the drain pipe 13. The design of the gate 14 can adjust the opening and closing state of the drain pipe 13. When the filter 3 is being cleaned, the gate 14 is opened. When the flue gas needs to be filtered, the gate 14 is closed to seal the drain pipe 13 to prevent the flue gas from being discharged through the drain pipe 13 without being filtered.

[0032] A water pump 15 is provided adjacent to the purification tank 1. The output end of the water pump 15 is connected to a first connecting pipe 16. One end of the first connecting pipe 16 is connected to a piston tube 17. The top of the piston tube 17, away from the end of the first connecting pipe 16, is connected to a second connecting pipe 18. One end of the second connecting pipe 18 is connected to the top of the conical box 4.

[0033] In one possible embodiment, when cleaning the filter 3, it is necessary to transport the cleaning liquid into the conical box 4. At this time, the water pump 15 is turned on first. Under the action of the water pump 15, the cleaning liquid will flow into the piston tube 17 through the first connecting tube 16, and flow into the conical box 4 through the second connecting tube 18 at one end of the piston tube 17.

[0034] One end of the gate plate 14 is fixedly connected to a support frame 19, and the end of the support frame 19 away from the gate plate 14 is fixedly connected to a slide rod 20. One end of the slide rod 20 extends into the interior of the piston tube 17 and is fixedly connected to a movable plate 21. The slide rod 20 and the movable plate 21 are both slidably connected to the piston tube 17; the inner wall of the support frame 19 away from the gate plate 14 is fixedly connected to a spring 22. The support frame 19 is located inside the spring 22 and is fixedly connected to a telescopic rod 23. The spring 22 and the telescopic rod 23 are both fixedly connected to the drain pipe 13;

[0035] In this embodiment, when the water pump 15 is turned on, the cleaning liquid will continuously flow into the piston tube 17. At this time, the water pressure in the piston tube 17 will gradually increase, thereby pushing the movable plate 21 to move, and then driving the slide bar 20 and the support frame 19 to move. At this time, the spring 22 and the telescopic rod 23 will gradually shrink. At the same time, the gate plate 14 will also move under the drive of the support frame 19, thereby allowing the drain pipe 13 to open. At this time, the waste water generated when the filter screen 3 is cleaned can be discharged smoothly. When the filter screen 3 is cleaned, the water pump 15 will be turned off. At this time, the water pressure in the piston tube 17 will decrease. At this time, the spring 22 will rebound, thereby driving the gate plate 14 to reset, thereby sealing the drain pipe 13 to prevent the smoke from being discharged through the drain pipe 13 without being filtered.

[0036] The inner wall of the conical box 4 is provided with a guide groove 24, and the inner wall of the purification tank 1 is fixedly connected to a brush plate 25 below the filter screen 3;

[0037] In one possible embodiment, the guide groove 24 is spirally arranged. The design of the guide groove 24 can guide the cleaning liquid to flow through the blades in a more optimized path, reduce the turbulence and vortex of the cleaning liquid on the blade surface, and reduce energy loss. By optimizing the cleaning liquid path, the guide groove 24 can more effectively convert the kinetic energy of the cleaning liquid into the rotational kinetic energy of the turbine blades 8. In addition, the design of the brush plate 25 can brush off the dust attached to the surface of the filter 3, thereby improving the cleaning effect.

[0038] A first synchronous wheel 26 is fixedly connected to the top of the first rotating shaft 7, and a second synchronous wheel 27 is fixedly connected to the top of the second rotating shaft 9. The first synchronous wheel 26 and the second synchronous wheel 27 are both engaged with the synchronous belt 10. A fixing ring 28 is fixedly connected to one end of the inner wall of the purification tank 1. The collar 2 is rotatably connected to the fixing ring 28. The second rotating shaft 9 is rotatably connected to one end of the top of the fixing ring 28.

[0039] In a possible embodiment, the first synchronous wheel 26 and the second synchronous wheel 27 are used to allow the synchronous belt 10 to smoothly drive and connect the first rotating shaft 7 and the second rotating shaft 9 together, and the design of the fixing ring 28 is used to support the collar 2 and the second rotating shaft 9.

[0040] One end of the side wall of the purification tank 1 is connected to an air inlet pipe 29, which is located below the filter 3. A valve 30 is installed at one end of the air inlet pipe 29. The top of the purification tank 1 is connected to an exhaust pipe 31. Four support legs 32 are fixedly connected to the bottom of the purification tank 1. The bottom of the support legs 32 is fixedly connected to a base 33. One end of the base 33 is fixedly connected to a support column 34, and the support column 34 is fixedly connected to the piston tube 17.

[0041] In one possible embodiment, the design of the air intake pipe 29 allows the flue gas to smoothly enter the purification tank 1 for purification. The design of the valve 30 can adjust the opening and closing state of the air intake pipe 29. When the flue gas is purified, the valve 30 is opened. When the filter 3 is cleaned, the valve 30 is closed. The piston rod is supported by the design of the support column 34.

[0042] Working principle: When cleaning the filter 3, first turn on the water pump 15. Under the action of the water pump 15, the cleaning liquid will flow into the piston tube 17 through the first connecting pipe 16. At this time, the water pressure in the piston tube 17 will gradually increase, thereby pushing the movable plate 21 to move, and then driving the slide bar 20 and the support frame 19 to move. At this time, the spring 22 and the telescopic rod 23 will gradually shrink. At the same time, the gate 14 will also move under the drive of the support frame 19, thereby opening the drain pipe 13, so that the waste water generated when the filter 3 is cleaned can be discharged smoothly. When the movable plate 21 in the piston tube 17 passes through one end of the water inlet of the second connecting pipe 18, the cleaning liquid will flow into the second connecting pipe 18. , and flows into the conical box 4 through the second connecting pipe 18. At this time, the cleaning liquid will flow into the conduit 5 along the inner wall of the conical box 4, and flow into the water spray pipe 6 through the conduit 5, and finally be sprayed out from the nozzle at the bottom of the water spray pipe 6, thereby flushing the filter 3. In the process of the cleaning liquid flowing through the conduit 5, it will drive the turbine blades 8 to rotate, thereby driving the first rotating shaft 7 to rotate. At this time, the second rotating shaft 9 will rotate synchronously with the first rotating shaft 7 under the transmission action of the synchronous belt 10, thereby driving the gear 12 to rotate. When the gear 12 rotates, it will drive the gear ring 11 to rotate, thereby driving the collar 2 and the filter 3 to rotate. During the rotation of the filter 3, the water spray pipe 6 can fully flush the filter 3;

[0043] The guide groove 24 arranged in the conical box 4 can guide the cleaning liquid to flow through the blades in a more optimized path, reduce the turbulence and vortex of the cleaning liquid on the blade surface, and reduce energy loss. By optimizing the cleaning liquid path, the guide groove 24 can more effectively convert the kinetic energy of the cleaning liquid into the rotational kinetic energy of the turbine blades 8. In addition, during the rotation of the filter 3, the brush plate 25 will brush the surface of the filter 3, thereby improving the cleaning effect. The waste water generated when the filter 3 is cleaned will fall to the bottom of the purification tank 1 and be discharged through the drain pipe 13. When the filter 3 is cleaned, the water pump 15 is turned off. At this time, the water pressure in the piston tube 17 is reduced. At this time, the spring 22 will rebound, thereby driving the gate 14 to reset, thereby sealing the drain pipe 13 to prevent the smoke from being discharged through the drain pipe 13 without being filtered.

[0044] Obviously, those skilled in the art may make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, if such modifications and variations fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include such modifications and variations.

Claims

1. A power plant boiler dust removal and purification device, comprising a purification tank (1), characterized in that: A collar (2) is provided at one end of the purification tank (1), a filter screen (3) is provided in the collar (2), a conical box (4) is provided above the filter screen (3), the bottom of the conical box (4) is connected to a conduit (5), the bottom of the conduit (5) is connected to a water spray pipe (6), the top center of the conical box (4) is rotatably connected to a first rotating shaft (7), the bottom of the first rotating shaft (7) extends into the conduit (5) and is fixedly connected to a turbine blade (8), the purification tank (1) is rotatably connected to a second rotating shaft (9) at an adjacent position of the collar (2), the first rotating shaft (7) and the second rotating shaft (9) are connected by a synchronous belt (10), a gear ring (11) is provided at one end of the outer wall of the collar (2), a gear (12) is provided at one end of the second rotating shaft (9), and the gear ring (11) is meshed with the gear (12).

2. A power plant boiler dust removal and purification device according to claim 1, characterized in that: The bottom of the purification tank (1) is connected to a drain pipe (13), and one end of the drain pipe (13) is slidably connected to a gate plate (14).

3. The power plant boiler dust removal and purification device according to claim 1, characterized in that: A water pump (15) is provided adjacent to the purification tank (1), the output end of the water pump (15) is connected to a first connecting pipe (16), one end of the first connecting pipe (16) is connected to a piston tube (17), the top of the piston tube (17) away from the end of the first connecting pipe (16) is connected to a second connecting pipe (18), and one end of the second connecting pipe (18) is connected to the top of the conical box (4).

4. A power plant boiler dust removal and purification device according to claim 2, characterized in that: One end of the gate plate (14) is fixedly connected to a support frame (19), and one end of the support frame (19) away from the gate plate (14) is fixedly connected to a slide rod (20). One end of the slide rod (20) extends into the interior of the piston tube (17) and is fixedly connected to a movable plate (21). Both the slide rod (20) and the movable plate (21) are slidably connected to the piston tube (17).

5. A power plant boiler dust removal and purification device according to claim 4, characterized in that: A spring (22) is fixedly connected to one end of the inner wall of the support frame (19) away from the gate plate (14); the support frame (19) is located inside the spring (22) and is fixedly connected to a telescopic rod (23); and both the spring (22) and the telescopic rod (23) are fixedly connected to the drain pipe (13).

6. The power plant boiler dust removal and purification device according to claim 1, characterized in that: The inner wall of the conical box (4) is provided with a guide groove (24), and the inner wall of the purification tank (1) is fixedly connected with a brush plate (25) below the filter screen (3).

7. The power plant boiler dust removal and purification device according to claim 1, characterized in that: A first synchronous wheel (26) is fixedly connected to the top of the first rotating shaft (7), and a second synchronous wheel (27) is fixedly connected to the top of the second rotating shaft (9). The first synchronous wheel (26) and the second synchronous wheel (27) are both engaged with the synchronous belt (10). A fixed ring (28) is fixedly connected to one end of the inner wall of the purification tank (1), and the sleeve (2) is rotatably connected in the fixed ring (28). The second rotating shaft (9) is rotatably connected to one end of the top of the fixed ring (28).

8. The power plant boiler dust removal and purification device according to claim 7, characterized in that: One end of the side wall of the purification tank (1) is connected to an air inlet pipe (29), the air inlet pipe (29) is located below the filter screen (3), one end of the air inlet pipe (29) is installed with a valve (30), the top of the purification tank (1) is connected to an exhaust pipe (31), the bottom of the purification tank (1) is fixedly connected to four support legs (32), the bottom of the support legs (32) is fixedly connected to a base (33), one end of the base (33) is fixedly connected to a support column (34), and the support column (34) is fixedly connected to the piston tube (17).

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