Dredging device for ash conveying pipeline

Abstract

The utility model relates to a dredging device for an ash conveying pipeline. The dredging device for the ash conveying pipeline effectively solves the problems that a filter screen cannot be cleaned and the like. Comprising a pipe body, a blockage clearing mechanism is rotatably arranged at the bottom of the pipe body, the blockage clearing mechanism comprises a blockage clearing pipe, a supporting pipe and a blockage clearing strip, the blockage clearing strip is rotatably arranged on the surface of the blockage clearing pipe, the blockage clearing pipe is rotatably arranged on the upper surface of the supporting pipe, and a control strip is slidably arranged in the middle of the blockage clearing pipe; the blockage clearing strip rotates by 90 degrees to be attached to the lower surface of the filter disc for ash discharging, dust on the lower surface of the filter disc is scraped off, the blockage clearing pipe is controlled to move downwards so that the ash discharging disc can move downwards, a gap is formed between the ash discharging disc and the ash discharging hole, and dust on the surface of the ash discharging disc is discharged according to the gap. And through rotation of the blockage clearing pipe, the scraping blade can also rotate, and through arrangement of supply gas in the blockage clearing pipe, the blockage clearing strip can exhaust gas, and ash scraping of the blockage clearing strip is facilitated.

Description

Technical Field

[0001] This utility model belongs to the field of ash conveying pipeline technology, specifically relating to a dredging device for ash conveying pipelines. Background Technology

[0002] Coal-fired power generation is my country's main form of power generation. Its main principle is as follows: coal is fed into a boiler, where its chemical energy is converted into heat energy, which is absorbed by water and steam. The steam then performs work in a turbine, converting it into mechanical energy. The turbine drives a generator rotor to rotate, converting the mechanical energy into electrical energy, which is then delivered to users. In coal-fired power generation technology, the combustion of fuel produces a large amount of dust. Existing pneumatic ash conveying technology uses gas to circulate dust and smoke within pipes. Filters are installed in each channel to filter large dust particles. However, as the channels operate continuously, dust easily accumulates on the filter surfaces, requiring regular pipe cleaning. Existing cleaning devices can interfere with the normal operation of ash conveying and cannot clean the filter screens. Utility Model Content

[0003] In order to overcome the defects of the prior art, this utility model provides a dredging device for ash conveying pipes. The unblocking tube of the dredging device can make the unblocking strip stir against the inside of the ash discharge hole to prevent dust from clogging the ash discharge hole. It can also make the unblocking strip rotate 90 degrees to fit against the lower surface of the filter disc for ash discharge.

[0004] A dredging device for ash conveying pipelines includes a pipe body. A blockage-clearing mechanism is rotatably mounted at the bottom of the pipe body. The blockage-clearing mechanism includes a blockage-clearing pipe, a support pipe, and a blockage-clearing strip. The blockage-clearing strip is rotatably mounted on the surface of the blockage-clearing pipe. A blockage-clearing pipe is rotatably mounted on the upper surface of the support pipe. A control strip is slidably mounted in the middle of the blockage-clearing pipe. A groove for overlapping the control strip is provided on one side of the blockage-clearing strip. A scraper is integrally mounted on the lower surface of the blockage-clearing strip. A filter disc is provided in the inner middle of the pipe body. A connecting strip is rotatably mounted at the bottom of the control strip and is slidably mounted on the lower surface of the pipe body.

[0005] The beneficial effects of the above technical solution are as follows:

[0006] The unclogging pipe in this design allows the unclogging strip to stir the dust inside the ash discharge hole, preventing dust from clogging it. It also allows the unclogging strip to rotate 90 degrees to fit against the lower surface of the filter disc for dust discharge, scraping away the dust on the lower surface of the filter disc. Controlling the unclogging pipe to move downwards also moves the ash discharge disc downwards, creating a gap between the ash discharge disc and the ash discharge hole. Dust is discharged from the surface of the ash discharge disc through this gap. The rotation of the unclogging pipe also causes the scraper to rotate. The gas supply inside the unclogging pipe allows the unclogging strip to discharge gas, facilitating the scraping of dust by the unclogging strip. Attached Figure Description

[0007] Figure 1 This is a schematic diagram of the present invention.

[0008] Figure 2 This is a schematic diagram of a single-sided cut of the tube body of this utility model;

[0009] Figure 3 This is a partial cross-sectional view of the tube body of this utility model;

[0010] Figure 4 This is a schematic diagram of the top of the tube body of this utility model;

[0011] Figure 5 This is a schematic diagram of the right side of the tube body of this utility model.

[0012] In the diagram: 1. Pipe body; 2. Unblocking pipe; 3. Support pipe; 4. Unblocking strip; 5. Control strip; 6. Groove; 7. Scraper; 8. Filter disc; 9. Connecting strip; 10. Ash discharge disc; 11. Spring No. 1; 12. Push rod; 13. Gear groove; 14. Spring No. 2; 15. Air supply pipe; 16. Exhaust channel; 17. Hose; 18. Circular channel; 19. Air inlet; 20. Ash discharge hole; 21. Exhaust vent; 22. Rotating hole; 23. Gear. Detailed Implementation

[0013] The foregoing and other technical contents, features and effects of this utility model are described in conjunction with the appendix below. Figures 1 to 5 The embodiments are described in detail below.

[0014] This embodiment provides a dredging device for ash conveying pipelines, as shown in the attached document. Figure 1-5 As shown, filter disc 8 is the filter screen in the prior art. Gas enters through air inlet 20 and exits through the top of pipe 1. The ash discharge disc is made of a sealed material, which normally blocks the ash discharge hole 20. (See instruction manual attached.) Figure 1 This is a three-dimensional diagram of the solution; the instruction manual is attached. Figure 2 The tube body 1 was cut at half its length from the viewpoint. Because tube body 1 is relatively long, a wavy line cut was used to conceal its length. (See instruction manual attached.) Figure 3 Only a cross-sectional view of the bottom of the box is shown in the instruction manual. Figure 4 The top of the box has been cut to show the shape and location of the unblocking strip 4. (Instruction manual attached.) Figure 5The cut on the right side shows the upper part of the tube body 1 being severed. The following is a description of this solution: At the bottom of the tube body 1, there are two push rods 12 (push rods 12 are electric push rods 12 in the prior art). A support tube 3 is installed at the extended end of the push rod 12. The position of the support tube 3 is controlled by the push rods 12; it can move upwards or downwards. A clearing tube 2 is rotatably mounted above the support tube 3 (the clearing tube 2 cannot detach from the support tube 3; the support tube 3 supports the clearing tube 2 for rotation). A clearing strip 4 rotates inside the clearing tube 2. An exhaust channel 16 is opened inside the clearing strip 4, allowing exhaust along one side of the clearing strip 4. One side of the clearing strip 4 overlaps with a control strip 5. That is, when the control strip 5 moves downwards relative to the clearing tube 2, the clearing strip 4 unfolds. (Due to the limitations of the instruction manual attached to this solution...) Figure 2At this point, the cleaning strip 4 is in contact with the inner wall of the ash discharge hole 20. Controlling the rotation of the cleaning tube 2 at this time stirs the inside of the ash discharge hole 20, causing the dust accumulated on the surface of the ash discharge hole 20 to rise and preventing dust accumulation. The cleaning tube 2 in this design can rotate because there is a gear on the right side of the support tube 3. The bottom of this gear has a motor, a servo motor, mounted on the support tube 3. The gear engages with the tooth groove 13 (the tooth groove 13 is located on the lower surface of the cleaning tube 2, so the motor drives the gear to rotate, and the gear causes the cleaning tube 2 to rotate on the upper surface of the support tube 3). The cleaning strip 4 in this design can also clean the lower surface of the filter disc 8. The push rod 12 controls the cleaning tube 2 to move... The cleaning strip 4 moves upwards. Since the inner wall of the ash discharge hole 20 cannot move relative to the control strip 5 and the cleaning pipe 2 (at this time, the second spring 14 is compressed), it continues until both sides of the cleaning strip 4 disengage from the ash discharge hole 20, causing the cleaning strip 4 to unfold (the second spring 14 is still compressed and then quickly reset). This means it rotates along the cleaning pipe 2 until the cleaning strip 4 rotates 90 degrees. Because the bottom of the connecting strip 9 is slidably located below the pipe body 1 with a maximum sliding distance, after reaching the maximum sliding distance, the position of the connecting strip 9 will not move. Finally, the top control strip 5 also stops moving. The cleaning pipe 2 continues to move upwards, opening the cleaning strip 4, and finally, the edge of the cleaning strip 4 is parallel to the bottom of the filter disc 8, contacting the filter disc 8. At this time, rotating the cleaning pipe 2 allows the cleaning strip 4 to continuously scrape off the dust on the surface of the filter disc 8. During the downward retraction of the cleaning pipe 2, the cleaning strip 4 will first rotate and retract under the action of the second spring 14 (because the second spring 14 is compressed), and then the cleaning strip 4 will feed into the ash discharge hole 20 to complete the retraction action. This solution also has the effect of ash discharge. An ash discharge disc 10 is slidably set on the surface of the ash discharge hole 20. The ash discharge disc 10 is made of sealing material. The push rod 12 controls the cleaning pipe 2 to move downward (the second spring 14 is not connected to the pipe body 1 at the top, but only to the connecting strip 9 at the bottom). The push rod 12 can push the cleaning strip 4 to push the ash discharge disc 10 downward. The bottom of the ash discharge hole 20 has a notch. Once the ash discharge disc 10 moves downward, The movement causes dust to be discharged along the edge of the dust discharge tray 10, achieving the effect of periodic cleaning. To facilitate unblocking, this solution is designed with an air supply pipe 15 (one end of the air supply pipe 15 needs to be equipped with a fan or air compressor to continuously supply gas to the air supply pipe 15. In order to enable the exhaust port 21 of this solution to exhaust, a control strip 5 is rotatably installed at the top of the connecting pipe, and the two are connected by an anti-detachment mechanism and are sealed for rotation. In this way, even if the unblocking pipe 2 rotates, it will not affect the gas supply between the two. The gas supplied by the air supply pipe 15 reaches the circular channel 18, i.e., the control strip 5, through the connecting strip 9, and then reaches the interior of the unblocking strip 4 through the hose 17 for exhaust, exhausting one side of the unblocking strip 4). The bottom of the unblocking strip 4 is integrally equipped with a scraper 7.The scraper 7 can contact the surface of the ash discharge disc 10 for cleaning, and the exhaust channel 16 extends to the exhaust port 21 of the scraper 7, which can also supply gas to the exhaust port 21 to complete the exhaust of the gas, so that the gas can be blown downward. The bottom of the pipe body 1 is rotatably equipped with a cleaning mechanism, which includes a cleaning pipe 2, a support pipe 3 and a cleaning strip 4. The surface of the cleaning pipe 2 is rotatably equipped with a cleaning strip 4, the upper surface of the support pipe 3 is rotatably equipped with a cleaning pipe 2, the middle of the cleaning pipe 2 is slidably equipped with a control strip 5, one side of the cleaning strip 4 is equipped with a groove 6 for overlapping the control strip 5, the lower surface of the cleaning strip 4 is integrally equipped with a scraper 7, the inner middle of the pipe body 1 is equipped with a filter disc 8, the bottom of the control strip 5 is rotatably equipped with a connecting strip 9, the connecting strip 9 is slidably equipped on the lower surface of the pipe body 1, the lower surface of the pipe body 1 is slidably equipped with an ash discharge disc 10, and a No. 1 spring is provided between the ash discharge disc 10 and the pipe body 1. 11. A scraper 7 is rotatably mounted on the upper surface of the ash discharge disc 10. A push rod 12 is installed at the bottom of the pipe body 1, and a support pipe 3 is installed at the bottom of the push rod 12. A toothed groove 13 is provided at the bottom of the unblocking pipe 2. A gear 23 is rotatably mounted on the upper surface of the support pipe 3, and the surface of the gear 23 is meshed with the toothed groove 13. A second spring 14 is provided at the bottom of the connecting strip 9, and an air supply pipe 15 is provided at the bottom of the connecting strip 9. An exhaust channel 16 is provided inside the unblocking pipe 2. A flexible hose 17 is connected to one side of the exhaust channel 16, and a control strip 5 is connected to the other end of the flexible hose 17. A circular channel 18 is provided inside the control strip 5. An air inlet 19 is provided on one side of the pipe body 1. An ash discharge hole 20 is provided at the bottom of the pipe body 1. An exhaust port 21 is provided in the middle of the scraper 7, and the surface of the exhaust port 21 is connected to the exhaust channel 16. A rotating hole 22 for sliding unblocking pipe 2 is provided in the middle of the ash discharge disc 10.

[0015] The above description is only for illustrating the present utility model. It should be understood that the present utility model is not limited to the above embodiments, and various modifications that conform to the concept of the present utility model are within the protection scope of the present utility model.

Claims

1. A de-clogging device for a fly ash duct, comprising a duct body (1), characterized in that: The bottom of the pipe body (1) is provided with a blockage cleaning mechanism, which comprises a blockage cleaning pipe (2), a supporting pipe (3) and a blockage cleaning strip (4), the surface of the blockage cleaning pipe (2) is provided with the blockage cleaning strip (4), the upper surface of the supporting pipe (3) is provided with the blockage cleaning pipe (2), the middle part of the blockage cleaning pipe (2) is slidably provided with a control strip (5), one side of the blockage cleaning strip (4) is provided with a notch (6) capable of lapping the control strip (5), the lower surface of the blockage cleaning strip (4) is integrally provided with a scraping blade (7), the inner middle part of the pipe body (1) is provided with a filter disc (8), the bottom of the control strip (5) is rotatably provided with a connecting strip (9), and the connecting strip (9) is slidably arranged on the lower surface of the pipe body (1).

2. A de-clogging device for a fly ash duct as defined in claim 1, wherein: The lower surface of the pipe body (1) is slidably provided with an ash discharge disc (10), a first spring (11) is arranged between the ash discharge disc (10) and the pipe body (1), and the upper surface of the ash discharge disc (10) is rotatably provided with the scraping blade (7).

3. A de-clogging device for a fly ash duct as defined in claim 1, wherein: The bottom of the pipe body (1) is provided with a push rod (12), and the bottom of the push rod (12) is provided with the supporting pipe (3).

4. A de-clogging device for a fly ash duct as defined in claim 1, wherein: The bottom of the blockage cleaning pipe (2) is provided with a gear slot (13), the upper surface of the supporting pipe (3) is rotatably provided with a gear (23), and the surface of the gear (23) is engaged with the gear slot (13).

5. A de-clogging device for a fly ash duct as defined in claim 1, wherein: The bottom of the connecting strip (9) is provided with a second spring (14), and the bottom of the connecting strip (9) is provided with an air supply pipe (15).

6. A de-clogging device for a fly ash duct as defined in claim 1, wherein: An exhaust passage (16) is arranged in the blockage cleaning pipe (2), and one side of the exhaust passage (16) is communicated with a hose (17).

7. A de-clogging device for a fly ash duct according to claim 6, wherein: The other end of the hose (17) is communicated with the control strip (5), and the control strip (5) is provided with a circular channel (18) in the inside.

8. A de-clogging device for a fly ash duct as defined in claim 1, wherein: One side of the pipe body (1) is provided with an air inlet hole (19), and the bottom of the pipe body (1) is provided with an ash discharge hole (20).

9. A de-clogging device for a fly ash duct as defined in claim 6, wherein: The middle part of the scraping blade (7) is provided with an air outlet (21), and the surface of the air outlet (21) is communicated with the exhaust passage (16).

10. A de-clogging device for a fly ash duct as defined in claim 2, wherein: The middle part of the ash discharge disc (10) is provided with a rotating hole (22) capable of sliding the blockage cleaning pipe (2).

Images