A nozzle for hydraulic soot blowing

Abstract

This invention discloses a water-cooled ash-cleaning nozzle, belonging to the technical field of furnace cleaning devices. The water-cooled ash-cleaning nozzle includes a nozzle body connected to a spray pipe. The nozzle body includes a cylinder and a nozzle rotatably connected to the end of the cylinder. The nozzle has several obliquely arranged nozzle orifices. A driving component for rotating the nozzle is provided inside the cylinder. The driving component includes an impeller, a rotating shaft, and a connecting cylinder. The impeller is disposed inside the cylinder, and its circumference is rotatably connected to the inner wall of the cylinder. One end of the rotating shaft is horizontally fixedly inserted into the middle of the impeller, and the other end is connected to the connecting cylinder. When in use, the high-pressure water flow impacts the impeller inside the cylinder, causing the impeller to drive the nozzle to rotate via the rotating shaft. The high-pressure water flow is then ejected through the several nozzle orifices, cleaning the water flow inside the evaporation tube through the rotating high-pressure water jet. This design is convenient and quick to use.

Description

Technical Field

[0001] This invention relates to the field of furnace cleaning devices, specifically to a spray nozzle for hydraulic ash removal. Background Technology

[0002] During normal operation, waste-to-energy plants generate a large amount of dust that adheres to the heating surfaces such as the evaporator tube bundles in the three flues, which reduces the thermal conductivity and thus the boiler performance. It is necessary to clean the accumulated ash regularly during operation to ensure the economical and stable operation of the boiler. During operation, the flue gas temperature in the lower part of the three flues is about 700-770℃, and the flue gas temperature in the upper part is about 580-640℃. The high temperature makes cleaning difficult.

[0003] The hydraulic cleaning device utilizes the explosive wave generated when water suddenly comes into contact with high-temperature dust and tube bundles to clean and remove the accumulated dust, thereby achieving the purpose of cleaning the evaporator tube bundles. It is necessary to spray the water for hydraulic cleaning evenly and quickly onto the heated tube bundle surface.

[0004] Traditional water-cooled cleaning nozzles typically use high-pressure atomizing nozzles, spraying water in a manner similar to showerhead droplets. However, due to the high temperature of the flue gas inside the evaporator tube, most of the water droplets evaporate before reaching the heated surface after contacting the high-temperature flue gas, resulting in poor cleaning performance. Summary of the Invention

[0005] The purpose of this invention is to overcome the problems in the prior art and provide a water-cooled dust removal nozzle that cleans dust inside evaporation tubes.

[0006] This invention provides a water-cooled dust removal nozzle, comprising a nozzle body connected to a nozzle pipe. The nozzle body includes a cylinder and a nozzle rotatably connected to the end of the cylinder. The nozzle has a plurality of nozzle orifices arranged at an angle. The cylinder contains a driving component for driving the nozzle to rotate. The driving component includes an impeller, a rotating shaft, and a connecting cylinder. The impeller is disposed in the cylinder and its circumference is rotatably connected to the inner wall of the cylinder. One end of the rotating shaft is horizontally fixedly inserted into the middle of the impeller, and the other end is connected to the connecting cylinder.

[0007] Preferably, the cylinder is provided with a bearing support frame, the bearing support frame includes a connecting block and a pair of inclined connecting rods, one end of the rotating shaft is fixedly inserted into the connecting block, one end of each pair of connecting rods is fixedly connected to the connecting block, and the other end is fixedly connected to the inside of the cylinder, and one end of the connecting cylinder is fixedly connected to the connecting rods.

[0008] Preferably, a load-bearing tube is provided between the impeller and the nozzle, and the load-bearing tube is a solid tube fixedly sleeved on the rotating shaft.

[0009] Preferably, the load-bearing tube is configured as a tapered tube, and the inner diameter of the load-bearing tube gradually decreases as it moves away from the impeller, with a gap between the load-bearing tube and the inner wall of the cylinder.

[0010] Preferably, the nozzle is configured as six nozzles arranged in an array along the periphery of the nozzle.

[0011] Preferably, the impeller includes a rotating ring, a support block, and several blades. One end of the rotating shaft is fixedly connected to the support block. The several blades are arranged in an array along the periphery of the support block. The rotating ring is fixedly sleeved on the outside of the several blades. An annular rotating groove is opened in the cylinder. The rotating ring is disposed in the rotating groove and rotatably connected to the inner wall of the cylinder.

[0012] Preferably, all of the blades are configured to be arc-shaped, and the direction of the arc is consistent.

[0013] Preferably, an upper end cap is threaded onto the end of the cylinder away from the nozzle, and a lower end cap is threaded onto the side of the cylinder closer to the nozzle.

[0014] Preferably, a bearing is provided between the connecting cylinder and the lower end cover.

[0015] Preferably, a sealing gasket is fitted on the outer side of the bearing.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: When the nozzle of the present invention is used, the nozzle body is connected to a high-pressure water pipe. The high-pressure water flows into the cylinder through the water pipe and impacts the impeller set in the cylinder. Because the impeller is rotatably connected to the inner wall of the cylinder, the impeller will rotate under the impact of the high-pressure water flow. The set rotating shaft drives the set nozzle to rotate together. The high-pressure water flow will be sprayed out from the nozzle set on the nozzle to form a high-pressure water jet column. As the nozzle rotates, it forms an annular water jet column, thereby deepening the effect of dust treatment in the evaporation tube. The design is ingenious in terms of use and has great applicability. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 This is a schematic cross-sectional view of the overall structure of the present invention.

[0019] Figure 3 This is a schematic diagram of the impeller structure of the present invention.

[0020] Figure 4 This is a schematic diagram of the load-bearing tube structure of the present invention.

[0021] Explanation of reference numerals in the attached drawings: 1. Nozzle body; 101. Cylinder; 102. Nozzle; 103. Nozzle port; 3. Drive component; 31. Impeller; 311. Rotating ring; 312. Support block; 313. Blade; 32. Rotating shaft; 33. Connecting cylinder; 4. Bearing support frame; 41. Connecting block; 42. Connecting rod; 5. Load-bearing pipe; 6. Upper end cover; 7. Lower end cover; 8. Bearing; 9. Sealing gasket. Detailed Implementation

[0022] The following is in conjunction with the appendix Figures 1-4 To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the described embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Unless otherwise defined, the technical or scientific terms used herein should have the ordinary meaning understood by those skilled in the art.

[0023] The terms "first," "second," and similar words used in the specification and claims of this patent application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Terms such as "inner," "outer," "upper," "lower," "far," "near," "front," and "rear" are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly. The drawings in this invention are not strictly drawn to scale; the specific dimensions and quantity of each structure can be determined according to actual needs. The drawings described in this invention are merely structural schematic diagrams.

[0024] This invention provides a water-cooled dust removal nozzle, such as... Figures 1-2 As shown, the nozzle body 1 is connected to the nozzle pipe. The nozzle body 1 includes a cylinder 101 and a nozzle 102 rotatably connected to the end of the cylinder 101. Several nozzles 103 are obliquely arranged on the nozzle 102. The cylinder 101 is provided with a driving component 3 for driving the nozzle 102 to rotate. The driving component 3 includes an impeller 31, a rotating shaft 32 and a connecting cylinder 33. The impeller 31 is disposed in the cylinder 101 and is rotatably connected to the inner side wall of the cylinder 101. One end of the rotating shaft 32 is horizontally fixedly inserted into the middle of the impeller 31, and the other end is connected to the connecting cylinder 33.

[0025] This invention discloses a water-cooled dust removal nozzle. In use, the nozzle body 1 is connected to a high-pressure water pipe. High-pressure water flows through the pipe into the cylinder 101 and impacts the impeller 31 inside the cylinder 101. Because the impeller 31 is rotatably connected to the inner wall of the cylinder 101, it rotates under the impact of the high-pressure water flow. The impeller 31, through a rotating shaft 32, drives the nozzle 102 to rotate as well. The high-pressure water flow is ejected from the nozzle 103 on the nozzle 102, forming a high-pressure water jet. As the nozzle 102 rotates, it forms an annular water jet, thereby enhancing the dust removal effect inside the evaporator tube. The design is ingenious and has great potential for widespread application.

[0026] In this embodiment, the nozzle body 1 and its internal components are made of high-temperature resistant materials, such as silicon carbide and stainless steel.

[0027] Preferred, such as Figures 1-2 As shown, the cylinder 101 is provided with a bearing 8 support frame 4. The bearing 8 support frame 4 includes a connecting block 41 and a pair of inclined connecting rods 42. One end of the rotating shaft 32 is fixedly inserted into the connecting block 41. One end of each pair of connecting rods 42 is fixedly connected to the connecting block 41, and the other end is fixedly connected to the inside of the cylinder 101. One end of the connecting cylinder 33 is fixedly connected to the connecting rods 42.

[0028] In this embodiment, the bearing 8 support frame 4 is supported by the cylinder 101, the rotating shaft 32 is supported by the connecting block 41, and the connecting cylinder 33 is connected by the inclined connecting rod 42, thereby stably connecting the rotating shaft 32 to the nozzle 102 and improving the stability of the nozzle 102 during rotation.

[0029] Preferred, such as Figures 1-2 As shown, a load-bearing tube 5 is provided between the impeller 31 and the nozzle 102. The load-bearing tube 5 is a solid tube fixedly sleeved on the rotating shaft 32.

[0030] In this embodiment, a load-bearing pipe 5 is provided between the impeller 31 and the nozzle 102, which can buffer and stabilize the water flow, reduce pressure fluctuations, ensure that the water flow enters the nozzle 102 smoothly, improve the spraying effect, and absorb some water pressure impact, reduce the direct impact on the impeller 31 and the nozzle 102, reduce wear, and extend the service life of the equipment. It absorbs and disperses the vibration of the water flow, reduces vibration and noise during equipment operation, improves the working environment, stabilizes water flow pressure, reduces cavitation, and avoids damage to impeller 31 and nozzle 102.

[0031] Preferred, such as Figures 1-4 As shown, the load tube 5 is a tapered tube. As the load tube 5 moves away from the impeller 31, its inner diameter gradually decreases, and there is a gap between the load tube 5 and the inner wall of the cylinder 101.

[0032] In this embodiment, the load pipe 5 is set as a tapered pipe, and as the inner diameter of the load pipe 5 gradually decreases away from the impeller 31, the water flow can be slowed down and the pressure increased, and the water pressure in the cylinder 101 can be stabilized, preventing the water column from fluctuating due to unstable water pressure in the cylinder 101, which would affect the dust removal work.

[0033] Preferred, such as Figures 1-2 As shown, the nozzle 103 is arranged in an array of 6 along the periphery of the nozzle 102.

[0034] In this embodiment, the present invention uses six nozzles 103. On the one hand, this can evenly distribute the water flow, expand the coverage area, and improve the dust removal or cleaning effect. On the other hand, setting six nozzles 103 can disperse the impact force of the water flow, reduce excessive impact on a single area, and maintain the overall impact force, which is suitable for large-area dust removal. The simultaneous operation of the six nozzles 103 can speed up the dust removal or cleaning speed and improve work efficiency. The multi-nozzle design reduces the risk of blockage of a single nozzle 103. Even if some nozzles 103 are blocked, the other nozzles 103 can still work normally, which helps to balance water pressure, reduce pressure fluctuations, ensure stable spraying, and extend the life of the nozzles 102.

[0035] Preferred, such as Figures 1-3 As shown, the impeller 31 includes a rotating ring 311, a support block 312, and several blades 313. One end of the rotating shaft 32 is fixedly connected to the support block 312. Several blades 313 are arranged in an array along the periphery of the support block 312. The rotating ring 311 is fixedly sleeved on the outside of several blades 313. An annular rotating groove is opened in the cylinder 101. The rotating ring 311 is set in the rotating groove and rotatably connected to the inner wall of the cylinder 101. Several blades 313 are all set in an arc shape, and the arc direction is consistent.

[0036] In this embodiment, the rotating ring 311 is connected to the side wall of the cylinder 101, and one end of the rotating shaft 32 is connected to the support block 312. When the high-pressure water flow enters the cylinder 101, it will impact the blades 313. When the blades 313 are impacted by the water flow, the impeller 31 will rotate, thereby driving the nozzle 102 to rotate through the rotating shaft 32. Then, the water flow will be sprayed out through the nozzles 103 to flush and clean the dust in the evaporation tube. In this application, the blades 313 are all arc-shaped, which can better guide the water flow, reduce turbulence and energy loss, and more effectively convert the kinetic energy of the water flow into impact force.

[0037] Preferred, such as Figures 1-4 As shown, the upper end cap 6 is threaded on the end of the cylinder 101 away from the nozzle 102, and the lower end cap 7 is threaded on the side of the cylinder 101 closer to the nozzle 102.

[0038] In this embodiment, both the upper end cover 6 and the lower end cover 7 are threadedly connected to the cylinder 101, allowing the nozzle to be disassembled at any time for easy cleaning and maintenance of the internal components, thereby extending the service life of the nozzle body 1.

[0039] Preferred, such as Figures 1-2 As shown, a bearing 8 is provided between the connecting cylinder 33 and the lower end cover 7, and a sealing gasket 9 is fitted on the outside of the bearing 8.

[0040] In this embodiment, a bearing 8 is provided between the connecting cylinder 33 and the lower end cover 7 to facilitate the rotation of the connecting cylinder 33, and a sealing gasket 9 is sleeved on the outside of the bearing 8 to protect the pressure inside the nozzle body 1, so as to prevent the pressure inside the nozzle body 1 from decreasing when the connecting cylinder 33 rotates, which could lead to water leakage or unstable water jet.

[0041] The method of using the water-cooled dust removal nozzle of the present invention is as follows: Connect the nozzle body 1 to the high-pressure water pipe. The high-pressure water flow enters the cylinder 101 through the water pipe and impacts the arc-shaped blades 313. At this time, the arc-shaped blades 313 will convert the energy of the high-pressure water flow, causing the rotating ring 311 to rotate inside the cylinder 101. Since the rotating shaft 32 is connected to the support block 312, the rotating impeller 31 will drive the nozzle 102 to rotate together through the rotating shaft 32. The high-pressure water flow will be ejected from the nozzle 103 on the nozzle 102 to form a high-pressure water column, and an annular water column will be formed as the nozzle 102 rotates.

[0042] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A water-powered dust removal nozzle, characterized in that, The nozzle body (1) is connected to the nozzle pipe. The nozzle body (1) includes a cylinder (101) and a nozzle (102) rotatably connected to the end of the cylinder (101). The nozzle (102) is provided with a plurality of nozzles (103) at an incline. The cylinder (101) is provided with a drive (3) for driving the nozzle (102) to rotate. The drive (3) includes an impeller (31), a rotating shaft (32) and a connecting cylinder (33). The impeller (31) is disposed inside the cylinder (101). The periphery of the impeller (31) is rotatably connected to the inner wall of the cylinder (101). One end of the rotating shaft (32) is horizontally fixedly inserted into the middle of the impeller (31), and the other end is connected to the connecting cylinder (33).

2. The water-cooled dust removal nozzle as described in claim 1, characterized in that, The cylinder (101) is provided with a bearing (8) support frame (4). The bearing (8) support frame (4) includes a connecting block (41) and a pair of inclined connecting rods (42). One end of the rotating shaft (32) is fixedly inserted into the connecting block (41). One end of each pair of connecting rods (42) is fixedly connected to the connecting block (41), and the other end is fixedly connected to the inside of the cylinder (101). One end of the connecting cylinder (33) is fixedly connected to the connecting rods (42).

3. The water-cooled dust removal nozzle as described in claim 1, characterized in that, A load-bearing tube (5) is provided between the impeller (31) and the nozzle (102), and the load-bearing tube (5) is a solid tube fixedly sleeved on the rotating shaft (32).

4. The water-cooled dust removal nozzle as described in claim 3, characterized in that, The load-bearing tube (5) is configured as a tapered tube. As the load-bearing tube (5) moves away from the impeller (31), its inner diameter gradually decreases. There is a gap between the load-bearing tube (5) and the inner wall of the cylinder (101).

5. A water-cooled dust removal nozzle as described in claim 1, characterized in that, The nozzle (103) is configured as a six-position array arranged around the periphery of the nozzle (102).

6. The water-cooled dust removal nozzle as described in claim 1, characterized in that, The impeller (31) includes a rotating ring (311), a support block (312) and several blades (313). One end of the rotating shaft (32) is fixedly connected to the support block (312). Several blades (313) are arranged in an array along the periphery of the support block (312). The rotating ring (311) is fixedly sleeved on the outside of several blades (313). An annular rotating groove is opened in the cylinder (101). The rotating ring (311) is arranged in the rotating groove and rotatably connected to the inner wall of the cylinder (101).

7. A water-cooled dust removal nozzle as described in claim 6, characterized in that, Several of the blades (313) are all configured to be arc-shaped, and the arc direction is consistent.

8. A water-cooled dust removal nozzle as described in claim 1, characterized in that, The upper end cap (6) is threaded on the end of the cylinder (101) away from the nozzle (102), and the lower end cap (7) is threaded on the side of the cylinder (101) closer to the nozzle (102).

9. A water-cooled dust removal nozzle as described in claim 8, characterized in that, A bearing (8) is provided between the connecting cylinder (33) and the lower end cover (7).

10. A water-cooled dust removal nozzle as described in claim 9, characterized in that, A sealing gasket (9) is fitted on the outside of the bearing (8).

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