Waste heat boiler decoking device

Abstract

The utility model relates to the technical field of waste heat boiler equipment, in particular to a waste heat boiler decoking device which comprises a base, a handle is arranged on one side of the base, a sleeve is arranged on the base in a penetrating mode, a telescopic rod is fixedly connected to the side, away from the base, of the sleeve, a blowing assembly is arranged on the telescopic rod, and the blowing assembly comprises a breather pipe and a nozzle. The breather pipe is communicated with the nozzle; the telescopic rod comprises a main rod and an auxiliary rod, the main rod is connected with the sleeve, a tool bit is installed at the end, away from the main rod, of the auxiliary rod, and the nozzle is arranged on the auxiliary rod and close to the tool bit. According to the utility model, through the arrangement of the purging assembly, compressed air is introduced and sprayed to the blade part of the tool bit to blow off adhered coke in time, so that the subsequent coke cleaning effect is effectively improved.

Description

Technical Field

[0001] This utility model relates to the technical field of waste heat boiler equipment, specifically to a waste heat boiler coke removal device. Background Technology

[0002] A waste heat boiler is a type of boiler that utilizes the residual heat from waste gas, waste materials, or waste liquids generated during industrial processes, as well as the heat produced by the combustion of combustible substances, to heat water to a certain temperature. Through waste heat recovery, it can produce hot water or steam to supply other processes. Waste heat boilers have a wide range of applications, including waste heat utilization in industries such as steel, metallurgy, chemicals, textiles, food, and papermaking. This not only reduces energy consumption and environmental pollution but also improves the economic efficiency and competitiveness of enterprises. A waste heat boiler mainly consists of a boiler drum, a vertical flue, the boiler body, and some auxiliary devices. To ensure the boiler's cooling effect, convection tube bundles for cooling are generally distributed inside the boiler body. During operation, the flue gas comes into vertical contact with the convection tube bundles for cooling. Dust in the flue gas adheres to the surface of the convection tube bundles. Under the high temperature inside the boiler, the dust adhering to the surface of the convection tube bundles gradually hardens and forms coke, thus affecting the boiler's cooling effect. Regular removal of the coke on the convection tube bundles is necessary to ensure the boiler's cooling efficiency.

[0003] To ensure the continuous operation of the waste heat boiler, on-site personnel typically use a descaling tool to clean the surface of the convection tube bundle. The procedure involves opening the manhole cover of the waste heat boiler, inserting a descaling tool with a blade through the manhole, and then scraping off the coke buildup on the surface of the convection tube bundle. After cleaning, the tool is removed and the cover is closed. This manual descaling method eliminates the need for machine shutdown, enabling online cleaning. However, it still has the following drawbacks in actual use: when cleaning highly adhesive coke, the removed coke tends to accumulate on the blade edge, resulting in significant coke residue on the blade and affecting subsequent descaling effectiveness. Summary of the Invention

[0004] This invention addresses the problem in existing descaling tools where, during the cleaning of highly adhesive coke, the cleaned coke accumulates on the blade edge, resulting in significant coke residue and hindering subsequent descaling effectiveness. The invention proposes a waste heat boiler descaling device that, through a purging assembly, uses compressed air to blow away the adhering coke from the blade edge, effectively improving the subsequent descaling process.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows:

[0006] A waste heat boiler coke removal device includes a base, a handle on one side of the base, a sleeve extending through the base, a telescopic rod fixedly connected to the side of the sleeve away from the base, a purging assembly on the telescopic rod, the purging assembly including an air pipe and a nozzle, the air pipe and the nozzle being connected in communication.

[0007] The telescopic rod includes a main rod and a secondary rod. The main rod is connected to a sleeve. A cutter head is installed at the end of the secondary rod away from the main rod. The nozzle is located on the secondary rod near the cutter head.

[0008] Furthermore, the sleeve is connected to the main rod, and a baffle is provided on the side of the sleeve away from the main rod. An adjusting assembly is provided inside the sleeve, and the adjusting assembly is connected to the cutter head via a steel wire rope. The adjusting assembly includes a screw and a slider. One end of the screw is rotatably mounted on the baffle, and the slider is sleeved on the screw and threadedly connected to the screw. One end of the steel wire rope is connected to the slider. Bosses are symmetrically arranged on both sides of the slider, and a groove is formed on the inner wall of the sleeve to mate with the bosses. By providing the bosses and grooves to mate, the slider is ensured to move along the axial direction of the screw.

[0009] Furthermore, an axial notch is provided on the end wall of the secondary rod, one end of the cutter head is hinged to the inner wall of the secondary rod via a pivot, and the other end of the cutter head passes through the notch.

[0010] Furthermore, a through hole is provided on the auxiliary rod near the cutter head, and the other end of the steel wire rope passes through the through hole and connects to the cutter head. The slider drives the steel wire rope to move, and the movement of the steel wire rope pulls the cutter head.

[0011] Furthermore, one end of the screw extends out to the outside of the baffle and is fixedly connected to a handwheel, which is located between the handle and the base, and a rubber sleeve is also provided on the handle.

[0012] Furthermore, a rotating sleeve is provided on the outer side of the bottom of the main rod. An annular groove is formed on the inner wall of the rotating sleeve, and an annular shoulder is rotatably connected to it within the annular groove. The annular shoulder is fixed to the main rod. The rotating sleeve is threadedly connected to the auxiliary rod. A long groove is formed on one side of the main rod, and a limiting pin is fixedly connected to the auxiliary rod within the long groove. This allows the auxiliary rod to extend and retract within the main rod, thereby adjusting the length of the telescopic component and facilitating operation.

[0013] Furthermore, the purging assembly also includes an annular tube, the upper end of the main rod is provided with interface one, the lower end of the auxiliary rod is provided with interface two, the vent pipe is a flexible hose, the two ends of the vent pipe are respectively connected to interface one and interface two, interface two is connected to the interior of the annular tube, and the nozzles are set to a plurality of them and evenly distributed along the circumference of the annular tube, with the nozzles tilted towards the blade head side.

[0014] Furthermore, a plurality of support plates are provided on one side of the annular tube. One end of each support plate is connected to the secondary rod, and the other end is connected to the annular tube. The support plates are evenly distributed at intervals along the circumference of the secondary rod. The support plates provide support for the annular tube.

[0015] The beneficial effects of this utility model through the above technical solution are as follows:

[0016] This invention, through the inclusion of an adjustment component, allows for easy insertion of the device into the waste heat boiler by first rotating the cutter head parallel to the auxiliary rod, facilitating its insertion through the manhole. Then, rotating the handwheel causes the screw to rotate, moving the slider and the wire rope. This movement pulls the cutter head, causing it to rotate perpendicular to the auxiliary rod, thus cleaning the coke deposits on the surface of the convection tube bundle. Furthermore, the inclusion of a purging component allows for the connection of an external compressed air pipeline during the coke removal process. Compressed air enters the vent pipe through interface one, then the annular pipe through interface two, and finally exits from a nozzle on the annular pipe. This compressed air sprays onto the cutting edge of the cutter head, promptly blowing off the adhering coke, effectively improving the subsequent coke removal effect and facilitating the cooling of the cutter head, ensuring smooth operation. Attached Figure Description

[0017] Figure 1 This is a perspective view of a waste heat boiler descaling device according to the present invention;

[0018] Figure 2 This utility model relates to a waste heat boiler slag removal device. Figure 1 A schematic diagram of direction P in the diagram;

[0019] Figure 3 This utility model relates to a waste heat boiler slag removal device. Figure 2 Sectional view at point AA;

[0020] Figure 4 This is a schematic diagram of the regulating component in a waste heat boiler coke removal device of this utility model;

[0021] Figure 5 This is a schematic diagram of the purging component in a waste heat boiler coke removal device according to the present invention;

[0022] Figure 6 This is a schematic diagram showing the connection of the main rod, auxiliary rod, and rotating sleeve in a waste heat boiler coke removal device according to this utility model.

[0023] The numbers in the attached diagram are:

[0024] 1. Base; 2. Handle; 3. Sleeve; 4. Vent pipe; 5. Nozzle; 6. Main rod; 7. Secondary rod; 8. Cutting head; 9. Wire rope; 10. Baffle; 11. Screw; 12. Slider; 13. Boss; 14. Slide groove; 15. Notch; 16. Through hole; 17. Handwheel; 18. Rubber sleeve; 19. Rotating sleeve; 20. Limiting pin; 21. Long groove; 22. Annular tube body; 23. Interface 1; 24. Interface 2; 25. Support plate; 26. Annular groove; 27. Annular shoulder. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0026] like Figures 1-6 As shown, this embodiment provides a waste heat boiler coke removal device, including a base 1, a handle 2 on one side of the base 1, a sleeve 3 extending through the base 1, a telescopic rod fixedly connected to the side of the sleeve 3 away from the base 1, a purging assembly on the telescopic rod, the purging assembly including an air pipe 4 and a nozzle 5, the air pipe 4 and the nozzle 5 being connected; wherein, the telescopic rod includes a main rod 6 and a secondary rod 7, the main rod 6 being connected to the sleeve 3, a cutter head 8 being installed at the end of the secondary rod 7 away from the main rod 6, and the nozzle 5 being disposed on the secondary rod 7 near the cutter head 8.

[0027] Specifically, the sleeve 3 is connected to the main rod 6. A baffle 10 is provided on the side of the sleeve 3 away from the main rod 6. An adjusting assembly is provided inside the sleeve 3. The adjusting assembly is connected to the cutter head 8 via a steel wire rope 9. The adjusting assembly includes a screw 11 and a slider 12. One end of the screw 11 is rotatably mounted on the baffle 10. The slider 12 is sleeved on the screw 11 and threadedly connected to the screw 11. One end of the steel wire rope 9 is connected to the slider 12. Bosses 13 are symmetrically arranged on both sides of the slider 12. A sliding groove 14 that mates with the bosses 13 is provided on the inner wall of the sleeve 3. By setting the bosses 13 and the sliding grooves 14 to mate, the slider 12 is ensured to move along the axial direction of the screw 11.

[0028] In this embodiment, a notch 15 is provided axially on the end wall of the auxiliary rod 7, one end of the cutter head 8 is hinged to the inner wall of the auxiliary rod 7 by a rotating shaft, and the other end of the cutter head 8 passes through the notch 15.

[0029] Please refer to this again. Figure 3The auxiliary rod 7 has a through hole 16 near the cutter head 8. The other end of the steel wire rope 9 passes through the through hole 16 and connects to the cutter head 8. In use, first rotate the cutter head 8 to a position parallel to the auxiliary rod 7, so that the device can be easily inserted into the waste heat boiler through the manhole. Then, turn the handwheel 17 to rotate the screw 11, thereby moving the slider 12 and driving the steel wire rope 9 to move. During the movement of the steel wire rope 9, it pulls the cutter head 8, causing it to rotate to a direction perpendicular to the auxiliary rod 7.

[0030] Furthermore, one end of the screw 11 extends to the outside of the baffle 10 and is fixedly connected to a handwheel 17. The handwheel 17 is located between the handle 2 and the base 1. The handle 2 is also provided with a rubber sleeve 18 to facilitate the gripping and operation of on-site personnel. By holding the handle 2, the device can be pushed forward into the manhole of the waste heat boiler.

[0031] Please refer to this again. Figure 6 A rotating sleeve 19 is provided on the outer side of the bottom of the main rod 6. An annular groove 26 is formed on the inner wall of the rotating sleeve 19, and an annular shoulder 27 is rotatably connected to it within the annular groove 26. The annular shoulder 27 is fixed to the main rod 6. The rotating sleeve 19 is threadedly connected to the auxiliary rod 7. A long groove 21 is formed on one side of the main rod 6, and a limiting pin 20 is fixedly connected to the auxiliary rod 7. The limiting pin 20 is located within the long groove 21. Through the cooperation between the annular shoulder 26 on the main rod 6 and the annular groove 26 on the rotating sleeve 19, when the rotating sleeve 19 rotates, due to the threaded action between the rotating sleeve 19 and the auxiliary rod 7, and guided by the limiting pin 20 and the long groove 21, the auxiliary rod 7 only moves axially relative to the main rod 6. That is, the auxiliary rod 7 achieves telescopic movement within the main rod 6, thereby adjusting the length of the telescopic component for convenient operation.

[0032] Please refer to this again. Figure 5 The purging assembly also includes an annular tube 22. The upper end of the main rod 6 is provided with interface 23, and the lower end of the auxiliary rod 7 is provided with interface 24. The vent pipe 4 is a flexible hose, with both ends connected to interface 23 and interface 24 respectively. Interface 24 is connected to the interior of the annular tube 22. Several nozzles 5 are evenly distributed along the circumference of the annular tube 22, and are angled towards the blade head 8. In use, interface 23 connects to an external compressed air pipeline. Compressed air enters the vent pipe 4 through interface 23, then enters the annular tube 22 through interface 24, and finally exits from the nozzles 5 on the annular tube 22. The compressed air is sprayed onto the blade edge of the blade head 8 to promptly blow off the adhering coke, and also facilitates cooling of the blade head 8, ensuring smooth coke removal.

[0033] In addition, a plurality of support plates 25 are provided on one side of the annular tube 22. One end of each support plate 25 is connected to the secondary rod 7, and the other end is connected to the annular tube 22. The plurality of support plates 25 are evenly distributed around the circumference of the secondary rod 7. The support plates 25 provide support for the annular tube 22.

[0034] The working principle of this utility model is as follows:

[0035] In use, first rotate the cutter head 8 to a position parallel to the auxiliary rod 7, so that the device can be easily inserted into the waste heat boiler through the manhole. Then, rotate the handwheel 17 to rotate the screw 11, thereby moving the slider 12 and driving the wire rope 9 to move. During the movement of the wire rope 9, it pulls the cutter head 8, causing it to rotate to a direction perpendicular to the auxiliary rod 7. Then, the cutter head 8 is used to clean the coking on the surface of the convection tube bundle.

[0036] During the descaling process, an external compressed air pipeline is connected through interface 23. Compressed air enters the ventilation pipe 4 through interface 23, then enters the annular pipe 22 through interface 24, and finally exits from the nozzle 5 on the annular pipe 22. The compressed air is sprayed onto the blade of the cutter head 8 to blow off the adhering coke in time, and also facilitates the cooling of the cutter head 8, ensuring the smooth progress of the descaling operation.

[0037] The embodiments described above are merely preferred embodiments of this utility model and are not intended to limit the scope of implementation of this utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the patent claims of this utility model should be included within the scope of the patent application of this utility model.

Claims

1. A waste heat boiler coke removal device, comprising a base (1), wherein a handle (2) is provided on one side of the base (1), characterized in that, A sleeve (3) is provided through the base (1). A telescopic rod is fixedly connected to the side of the sleeve (3) away from the base (1). A purging assembly is provided on the telescopic rod. The purging assembly includes an air pipe (4) and a nozzle (5). The air pipe (4) and the nozzle (5) are connected in communication. The telescopic rod includes a main rod (6) and a secondary rod (7). The main rod (6) is connected to the sleeve (3). A cutter head (8) is installed at the end of the secondary rod (7) away from the main rod (6). The nozzle (5) is located on the secondary rod (7) near the cutter head (8).

2. The waste heat boiler coke removal device according to claim 1, characterized in that, The sleeve (3) is connected to the main rod (6). A baffle (10) is provided on the side of the sleeve (3) away from the main rod (6). An adjustment component is provided inside the sleeve (3). The adjustment component is connected to the cutter head (8) by a steel wire rope (9). The adjustment component includes a screw (11) and a slider (12). One end of the screw (11) is rotatably mounted on the baffle (10). The slider (12) is sleeved on the screw (11) and threadedly connected to the screw (11). One end of the steel wire rope (9) is connected to the slider (12). Bosses (13) are symmetrically arranged on both sides of the slider (12). A groove (14) that matches the bosses (13) is opened on the inner wall of the sleeve (3).

3. The waste heat boiler coke removal device according to claim 2, characterized in that, The end tube wall of the auxiliary rod (7) has an axial notch (15), one end of the cutter head (8) is hinged to the inner wall of the auxiliary rod (7) by a rotating shaft, and the other end of the cutter head (8) passes through the notch (15).

4. The waste heat boiler coke removal device according to claim 2, characterized in that, A through hole (16) is provided on the auxiliary rod (7) near the cutter head (8), and the other end of the wire rope (9) passes through the through hole (16) and connects to the cutter head (8).

5. A waste heat boiler coke removal device according to claim 2, characterized in that, One end of the screw (11) extends out to the outside of the baffle (10) and is fixedly connected to a handwheel (17). The handwheel (17) is located between the handle (2) and the base (1). A rubber sleeve (18) is also provided on the handle (2).

6. The waste heat boiler coke removal device according to claim 1, characterized in that, A rotating sleeve (19) is provided on the outer side of the bottom of the main rod (6). An annular groove (26) is provided on the inner wall of the rotating sleeve (19). An annular shoulder (27) is provided in the annular groove (26) and is rotatably connected thereto. The annular shoulder (27) is fixed on the main rod (6). The rotating sleeve (19) is threadedly connected to the auxiliary rod (7). A long groove (21) is provided on one side of the main rod (6). A limiting pin (20) is fixedly connected on the auxiliary rod (7). The limiting pin (20) is located in the long groove (21).

7. A waste heat boiler coke removal device according to claim 1, characterized in that, The purging assembly also includes an annular tube (22), the upper end of the main rod (6) is provided with interface one (23), the lower end of the auxiliary rod (7) is provided with interface two (24), the vent pipe (4) is a flexible hose, the two ends of the vent pipe (4) are respectively connected to interface one (23) and interface two (24), the interface two (24) is connected to the interior of the annular tube (22), and the nozzles (5) are set to a plurality of them and evenly distributed along the circumference of the annular tube (22), and the nozzles (5) are inclined toward the side of the cutter head (8).

8. A waste heat boiler coke removal device according to claim 7, characterized in that, A number of support plates (25) are provided on one side of the annular tube (22). One end of the support plate (25) is connected to the auxiliary rod (7), and the other end of the support plate (25) is connected to the annular tube (22). The support plates (25) are evenly distributed around the auxiliary rod (7).

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