Spray head for hydraulic ash removal

Abstract

The invention discloses a spray head for hydraulic ash removal, and belongs to the technical field of hearth cleaning devices. The spray head for hydraulic ash removal comprises a spray head body connected with a spray pipe, the spray head body comprises a barrel and a spray nozzle rotationally connected to the end of the barrel, a plurality of nozzles are obliquely formed in the spray nozzle, a driving part used for driving the spray nozzle to rotate is arranged in the barrel, the driving part comprises an impeller, a rotating shaft and a connecting barrel, and the impeller is arranged in the connecting barrel. The impeller is arranged in the barrel, the peripheral side of the impeller is rotationally connected with the inner side wall of the barrel, one end of the rotating shaft is horizontally and fixedly inserted into the middle of the impeller, and the other end of the rotating shaft is connected with the connecting barrel. The impeller drives the nozzle to rotate through the rotating shaft, high-pressure water flow is sprayed out through a plurality of spouts formed in the nozzle, water flow in the evaporation pipe is cleaned through the rotating high-pressure water flow column, and use is convenient and fast.

Description

Technical Field

[0001] The invention relates to the technical field of furnace cleaning devices, and in particular to a nozzle for hydraulic dust cleaning. Background Art

[0002] During the normal operation of the waste incineration power plant, a large amount of dust will be generated along the flue gas flow and adhere to the heating surfaces such as the three-flue evaporator tube bundle, causing a decrease in thermal conductivity and thus a decrease in boiler performance. The accumulated ash must be cleaned regularly during operation to ensure the economical and stable operation of the boiler. During operation, the flue gas temperature at the bottom of the three flues is about 700-770℃, and the flue gas temperature at the top is about 580-640℃. The high temperature makes cleaning difficult.

[0003] The hydraulic cleaning device uses the explosion wave generated when water suddenly contacts the high-temperature dust and the tube bundle to clean the accumulated dust and achieve the purpose of cleaning the evaporation tube bundle. The water for hydraulic cleaning needs to be sprayed evenly and quickly onto the heated tube bundle surface.

[0004] Traditional hydraulic cleaning nozzles usually use high-pressure atomizing nozzles, and the state of the water sprayed out is similar to the water droplets of a shower. However, due to the high temperature of the flue gas in 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 effect. Summary of the invention

[0005] The purpose of the present invention is to overcome the problems in the prior art and provide a hydraulic dust cleaning nozzle to clean the dust in the evaporation tube.

[0006] The present invention provides a nozzle for hydraulic dust cleaning, comprising a nozzle body connected to a nozzle pipe, the nozzle body comprising a cylinder and a nozzle rotatably connected to the end of the cylinder, a plurality of nozzles are obliquely arranged on the nozzle, a driving member for driving the nozzle to rotate is provided in the cylinder, the driving member comprises an impeller, a rotating shaft and a connecting cylinder, the impeller is arranged in the cylinder, the circumference of the impeller is rotatably connected to the inner wall of the cylinder, one end of the rotating shaft is horizontally fixed and inserted in the middle of the impeller, and the other end is connected to the connecting cylinder.

[0007] Preferably, a bearing support frame is provided in the cylinder, and the bearing support frame includes a connecting block and a pair of obliquely arranged connecting rods, one end of the rotating shaft is fixedly inserted on the connecting block, one end of a pair of connecting rods are 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 rod.

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

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

[0010] Preferably, the nozzles are arranged in array of 6 along the circumference of the nozzle.

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

[0012] Preferably, the plurality of blades are all arranged in an arc shape, and the arc directions are consistent.

[0013] Preferably, an upper end cap is threadedly sleeved on one end of the barrel away from the nozzle, and a lower end cap is threadedly connected to one side of the barrel close to the nozzle.

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

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

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: when using a hydraulic dust cleaning nozzle of the present invention, the nozzle body is connected to a high-pressure water pipe, and the high-pressure water flow enters the cylinder through the water pipe and impacts the impeller arranged in the cylinder. Since the impeller is rotatably connected to the inner wall of the cylinder, the impeller rotates under the impact of the high-pressure water flow, and the nozzle is driven to rotate together through the arranged rotating shaft. The high-pressure water flow is ejected from the nozzle opening arranged on the nozzle to form a high-pressure water flow column, and an annular water flow column is formed as the nozzle rotates, thereby deepening the effect of dust treatment in the evaporating tube. The use aspect is cleverly designed and has great popularization potential. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

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

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

[0021] Explanation of the accompanying drawings: 1. Nozzle body; 101. Cylinder; 102. Nozzle; 103. Spout; 3. Driving member; 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 tube; 6. Upper end cover; 7. Lower end cover; 8. Bearing; 9. Sealing gasket. DETAILED DESCRIPTION

[0022] The following is combined with Figure 1 to Figure 4 In order to make the purpose, technical solution and advantages of the embodiment of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described in conjunction with the drawings of the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Based on the described embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention. Unless otherwise defined, the technical terms or scientific terms used herein should be the usual meanings understood by people with general skills in the field to which the present invention belongs.

[0023] The words "first", "second" and similar words used in the patent application specification and claims of the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, but do not exclude other elements or objects. "Inside", "outside", "upper", "lower", "far", "near", "front", "back" and the like 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 the present invention are not drawn strictly according to the actual proportions. The specific size and quantity of each structure can be determined according to actual needs. The drawings described in the present invention are only schematic diagrams of the structures.

[0024] The present invention provides a hydraulic dust cleaning nozzle, such as Figure 1-2 As shown, it includes a nozzle body 1 connected to the nozzle pipe, the nozzle body 1 includes a barrel 101 and a nozzle 102 rotatably connected to the end of the barrel 101, a plurality of nozzles 103 are obliquely arranged on the nozzle 102, a driving member 3 for driving the nozzle 102 to rotate is arranged in the barrel 101, the driving member 3 includes an impeller 31, a rotating shaft 32 and a connecting barrel 33, the impeller 31 is arranged in the barrel 101, the circumference of the impeller 31 is rotatably connected to the inner wall of the barrel 101, one end of the rotating shaft 32 is horizontally fixed and inserted in the middle of the impeller 31, and the other end is connected to the connecting barrel 33.

[0025] The hydraulic dust cleaning nozzle of the present invention is used by connecting the nozzle body 1 to a high-pressure water pipe. The high-pressure water flows into the cylinder 101 through the water pipe and impacts the impeller 31 arranged in the cylinder 101. Since the impeller 31 is rotatably connected to the inner wall of the cylinder 101, the impeller 31 rotates under the impact of the high-pressure water flow and drives the nozzle 102 to rotate together through the rotating shaft 32. The high-pressure water flow is ejected from the nozzle 103 arranged on the nozzle 102 to form a high-pressure water flow column, and an annular water flow column is formed as the nozzle 102 rotates, thereby deepening the effect of dust treatment in the evaporation tube. The use is cleverly designed and has great promotion potential.

[0026] Preferably, Figure 1-2 As shown, a bearing 8 support frame 4 is provided inside the cylinder 101, and the bearing 8 support frame 4 includes a connecting block 41 and a pair of connecting rods 42 arranged obliquely. One end of the rotating shaft 32 is fixedly inserted on the connecting block 41, one end of a pair of connecting rods 42 are fixedly connected to the connecting block 41, and the other end is fixedly connected to the inside of the cylinder 101, and one end of the connecting cylinder 33 is fixedly connected to the connecting rod 42.

[0027] 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 rod 42 is inclined to connect with the connecting cylinder 33, so that the rotating shaft 32 is stably connected to the nozzle 102, thereby improving the stability of the nozzle 102 during rotation.

[0028] Preferably, Figure 1-2 As shown, a weight-bearing tube 5 is provided between the impeller 31 and the nozzle 102 , and the weight-bearing tube 5 is configured as a solid tube fixedly sleeved on the rotating shaft 32 .

[0029] A load-bearing pipe 5 is arranged 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 part of the 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;

[0030] Absorb and disperse the vibration of water flow, reduce the vibration and noise during the operation of the equipment, improve the working environment, stabilize the water flow pressure, reduce the occurrence of cavitation, and avoid damage to the impeller 31 and the nozzle 102.

[0031] Preferably, Figure 1 to Figure 4 As shown, the weight tube 5 is configured as a conical tube, and the inner diameter of the weight tube 5 gradually decreases as it moves away from the impeller 31 , and there is a gap between the weight tube 5 and the inner wall of the cylinder 101 .

[0032] The load-bearing pipe 5 is set as a conical pipe, and the inner diameter of the load-bearing pipe 5 gradually decreases as it moves away from the impeller 31, which can slow down the water flow and increase the pressure, and stabilize the water pressure in the cylinder 101 to prevent the unstable water pressure in the cylinder 101 from causing the sprayed water column to fluctuate, thereby affecting the cleaning work.

[0033] Preferably, Figure 1-2 As shown, the nozzles 103 are arranged in an array of six along the circumference of the nozzle 102 .

[0034] In the present invention, the number of the nozzles 103 is set to 6. On the one hand, the water flow can be evenly distributed, the coverage area can be expanded, and the cleaning or washing effect can be improved. On the other hand, the number of the discharge nozzles 103 is set to 6 to disperse the impact force of the water flow, reduce excessive impact on a single area, and maintain the overall impact force. It is suitable for large-area cleaning. The simultaneous operation of the 6 nozzles 103 can speed up the cleaning or washing speed and improve work efficiency. The design of multiple nozzles 103 reduces the risk of blockage of a single nozzle 103. Even if some nozzles 103 are blocked, other nozzles 103 can still work normally, which helps to balance the water pressure, reduce pressure fluctuations, ensure stable injection, and extend the life of the nozzle 102.

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

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

[0037] Preferably, Figure 1 to Figure 4 As shown, an upper end cover 6 is threadedly sleeved on one end of the barrel 101 away from the nozzle 102 , and a lower end cover 7 is threadedly connected to the side of the barrel 101 close to the nozzle 102 .

[0038] In the present invention, both the upper end cover 6 and the lower end cover 7 are threadedly connected to the barrel 101 , so the nozzle can be disassembled at any time, which is convenient for cleaning and maintenance of the internal parts of the nozzle, thereby increasing the service life of the nozzle body 1 .

[0039] Preferably, Figure 1-2 As shown, a bearing 8 is provided between the connecting tube 33 and the lower end cover 7 , and a sealing gasket 9 is sleeved on the outer side of the bearing 8 .

[0040] A bearing 8 is provided between the connecting tube 33 and the lower end cover 7 to facilitate the rotation of the connecting tube 33, and a sealing gasket 9 is sleeved on the outer side of the bearing 8 to protect the pressure in the nozzle body 1 to prevent the connecting tube 33 from causing the pressure in the nozzle body 1 to decrease when the connecting tube 33 rotates, resulting in water leakage or unstable water column.

[0041] The method of using the hydraulic dust cleaning nozzle of the present invention is as follows:

[0042] The nozzle body 1 is connected to a high-pressure water pipe. The high-pressure water flows into the cylinder 101 through the water pipe and impacts the arc blades 313. At this time, the arc blades 313 will convert the energy of the high-pressure water flow to make the rotating ring 311 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 set on the nozzle 102 to form a high-pressure water flow column, and an annular water flow column will be formed as the nozzle 102 rotates.

[0043] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A nozzle for hydraulic dust cleaning, characterized in that: The invention comprises a nozzle body (1) connected to a nozzle pipe, wherein the nozzle body (1) comprises a barrel (101) and a nozzle (102) rotatably connected to the end of the barrel (101), wherein a plurality of nozzles (103) are obliquely arranged on the nozzle (102), wherein a driving member (3) for driving the nozzle (102) to rotate is arranged in the barrel (101), wherein the driving member (3) comprises an impeller (31), a rotating shaft (32) and a connecting barrel (33), wherein the impeller (31) is arranged in the barrel (101), wherein the circumference of the impeller (31) is rotatably connected to the inner wall of the barrel (101), wherein one end of the rotating shaft (32) is horizontally fixedly inserted in the middle of the impeller (31), and the other end is connected to the connecting barrel (33).

2. A spray head for hydraulic dust cleaning as claimed in claim 1, characterized in that: A bearing (8) support frame (4) is provided inside the cylinder (101), and the bearing (8) support frame (4) comprises a connecting block (41) and a pair of connecting rods (42) arranged obliquely, one end of the rotating shaft (32) is fixedly inserted into the connecting block (41), one end of the pair of connecting rods (42) are fixedly connected to the connecting block (41), and the other end is fixedly connected to the inside of the cylinder (101), and one end of the connecting cylinder (33) is fixedly connected to the connecting rod (42).

3. A spray head for hydraulic dust cleaning as claimed in claim 1, characterized in that: A weight-bearing tube (5) is provided between the impeller (31) and the nozzle (102), and the weight-bearing tube (5) is configured as a solid tube fixedly sleeved on the rotating shaft (32).

4. A spray head for hydraulic dust cleaning as claimed in claim 3, characterized in that: The load-bearing tube (5) is configured as a conical tube, and the inner diameter of the load-bearing tube (5) gradually decreases as it moves away from the impeller (31), and there is a gap between the load-bearing tube (5) and the inner wall of the cylinder (101).

5. A spray head for hydraulic dust cleaning as claimed in claim 1, characterized in that: The nozzles (103) are arranged in arrays of six along the circumference of the nozzle (102).

6. A spray head for hydraulic dust cleaning as claimed in claim 1, characterized in that: The impeller (31) comprises a rotating ring (311), a support block (312) and a plurality of blades (313); one end of the rotating shaft (32) is fixedly connected to the support block (312); the plurality of blades (313) are arranged in an array along the circumference of the support block (312); the rotating ring (311) is fixedly sleeved on the outside of the plurality of blades (313); an annular rotating groove is provided in the cylinder (101); the rotating ring (311) is arranged in the rotating groove and is rotatably connected to the inner wall of the cylinder (101).

7. A spray head for hydraulic dust cleaning as claimed in claim 6, characterized in that: The plurality of blades (313) are all arranged in an arc shape, and the arc directions are consistent.

8. A spray head for hydraulic dust cleaning as claimed in claim 1, characterized in that: An upper end cap (6) is threadedly sleeved on one end of the barrel (101) away from the nozzle (102), and a lower end cap (7) is threadedly connected to the side of the barrel (101) close to the nozzle (102).

9. A spray head for hydraulic dust cleaning as claimed in claim 8, characterized in that: A bearing (8) is provided between the connecting tube (33) and the lower end cover (7).

10. A spray head for hydraulic dust cleaning as claimed in claim 9, characterized in that: A sealing gasket (9) is sleeved on the outer side of the bearing (8).

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