Anti-scaling and ash-cleaning device for online water jet air cleaner

Abstract

The utility model discloses an on-line water jet air cleaner anti-scaling deashing device which comprises an air inlet cylinder, the top of the air inlet cylinder is fixedly connected with a connecting cylinder through a flange plate, a fan connecting cylinder is fixedly installed at the top of the connecting cylinder, and meanwhile a fan body is fixedly arranged at the top of the fan connecting cylinder. The fan body is arranged in the fan connecting cylinder and communicates with the fan connecting cylinder, an air outlet cylinder is fixedly installed on the right side of the fan body, a fan impeller is installed on the upper side of the interior of the fan body, meanwhile, a motor shaft is fixedly installed on the fan impeller, a water jet spray gun is installed on the inner wall of the fan connecting cylinder, and a spray pipe is arranged at the top of the water jet spray gun. According to the on-line water jet air cleaning machine anti-scaling and deashing device, four sets of water jet spray guns are additionally arranged at the proper positions of the adjacent space of the air inlet barrel of the air cleaning machine and the impeller of the air cleaning machine, anti-scaling and deashing are effectively carried out on the impeller, and the fan can continuously operate for a long time or the converter fan only needs one or two times of deashing for dynamic balance in one year; and the steelmaking production is prevented from being seriously restricted.

Description

Technical Field

[0001] The utility model relates to the field of steel mill equipment, in particular to an anti-scaling and dust cleaning device for an online water jet air cleaner. Background Art

[0002] The fan used in the converter gas (OG) system, one of the key equipment in steel mill converters, contains some solid particles with a certain degree of humidity and stickiness in the high-speed flue gas flowing through the air duct. When these particles flow through the fan impeller area, they are strongly impacted by the high-speed rotating impeller surface, causing some particles to adhere tightly to the impeller surface. Over time, the impeller surface is gradually covered with more and thicker particles. Due to the impact and corrosion of the medium during the operation of the impeller blades, the impeller surface will have local differences in shape and finish.

[0003] Therefore, the impeller surface is gradually thickened by particles, and the amount of thickness increases naturally, causing the impeller to rotate unbalanced and generate vibrations. When this phenomenon develops to a certain extent, the impeller must be cleaned and dynamically balanced. Fan maintenance is in the gas area and limited space, and frequent maintenance increases safety hazards. The converter needs to be cleaned and dynamically balanced once every 20-30 days, which seriously restricts steelmaking production. Utility Model Content

[0004] The purpose of the utility model is to provide an anti-scaling and dust cleaning device for an online water jet air blower to solve the defects mentioned in the above background technology.

[0005] To achieve the above-mentioned purpose, an online water jet blower anti-scaling and dust cleaning device is provided, including an air inlet tube, the top of the air inlet tube is fixedly connected to the connecting tube by a flange, and a fan connecting tube is fixedly installed on the top of the connecting tube, and a fan body is fixedly provided on the top of the fan connecting tube, and the fan body and the fan connecting tube are connected, an air outlet tube is fixedly installed on the right side of the fan body, and a fan impeller is installed on the upper inner side of the fan body, and a motor shaft is fixedly installed on the fan impeller, a water jet spray gun is installed on the inner wall of the fan connecting tube, and a spray pipe is provided on the top of the water jet spray gun, a water mist spray gun is fixedly inserted into the interior of the air inlet tube, and a water mist nozzle is screwed and fixed to the top of the water mist spray gun.

[0006] Preferably, four groups of water mist spray guns are evenly installed inside the air inlet cylinder, and the angle between two adjacent groups of water mist spray guns is 90°. At the same time, water mist nozzles are set on the tops of the four groups of water mist spray guns.

[0007] Preferably, the spraying direction of the four groups of water mist nozzles is upward, and the spraying direction of the water mist nozzles is the same as the direction of the flue gas flow, and the water mist nozzles are atomizing cone nozzles.

[0008] Preferably, the axial cross-sections of the fan connecting tube, the connecting tube and the air inlet tube are concentric circle structures, and four groups of mounting seats are evenly arranged on the circumferential inner wall of the fan connecting tube.

[0009] Preferably, water jet spray guns are fixedly mounted on the four sets of mounting seats, and spray pipes are vertically arranged on the tops of the four sets of water jet spray guns. At the same time, four sets of jet nozzles are evenly installed on the surface of the spray pipes, and multiple sets of jet nozzles are arranged opposite to the fan impeller.

[0010] Preferably, the injection direction surface of the jet nozzle is at 45° to the tangent of the fan impeller surface, and the vertical distance between the jet nozzle and the fan impeller surface is less than 120mm and greater than 80mm. At the same time, four groups of water jet spray guns are symmetrically and evenly installed along the rotating circular surface of the fan impeller.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] 1. The utility model uses a water jet spray gun consisting of a gun body, a spray pipe, and a jet nozzle. The jet nozzle is characterized by a small nozzle effective area and a large unit impact force, which can overcome the influence of flue gas flow velocity and effectively spray to the corresponding position to remove sticky particles and scale. Four sets of water jet spray guns are added at appropriate positions in the space adjacent to the fan air inlet duct and the fan impeller to effectively prevent scale and clean the impeller, ensuring long-term continuous operation of the fan or only requiring one or two cleaning and dynamic balancing of the converter fan per year, thus avoiding serious restrictions on steelmaking production.

[0013] 2. The utility model is composed of a water mist spray gun and a water mist nozzle; the characteristics of the water mist nozzle are: water is atomized into a mist field, and small water droplets are evenly distributed on its cross section; the nozzle spray direction is the same as the flue gas flow direction; the nozzle is installed: it is evenly distributed according to the air duct cross section, and due to the high water pressure, it can overcome the influence of the flue gas flow velocity and achieve uniform distribution of water droplets on the air duct cross section; the water mist nozzle on the water mist spray gun, the water mist nozzle water mist spray direction axis is the same as the flue gas flow direction; the nozzle is installed: it is evenly distributed according to the air duct cross section; due to the high water pressure, the water mist nozzle can overcome the influence of the flue gas flow velocity and achieve uniform distribution of water droplets on the air duct cross section flow; the dust-laden gas can be fully and evenly settled. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a front view schematic diagram of the structure of the utility model;

[0015] Figure 2 for Figure 1 A top view of

[0016] Figure 3 for Figure 1 AA cross-sectional structural diagram in;

[0017] Figure 4 Schematic diagram for implementation II.

[0018] Numbers in the figure: 1. Air inlet duct; 2. Water mist spray gun; 21. Water mist nozzle; 3. Water jet spray gun; 31. Spray pipe; 32. Jet nozzle; 4. Mounting base; 5. Motor shaft; 51. Fan impeller; 6. Fan body; 7. Air outlet duct; 8. Connecting tube; 9. Fan connecting tube. DETAILED DESCRIPTION

[0019] 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.

[0020] Implementation 1: Please refer to Figure 1-4 The utility model provides an online water jet fan anti-scaling and dust cleaning device, including an air inlet cylinder 1, the top of the air inlet cylinder 1 is fixedly connected to the connecting cylinder 8 through a flange, and the top of the connecting cylinder 8 is fixedly installed with a fan connecting cylinder 9, and the top of the fan connecting cylinder 9 is fixedly provided with a fan body 6, and the fan body 6 is connected to the fan connecting cylinder 9, an air outlet cylinder 7 is fixedly installed on the right side of the fan body 6, and a fan impeller 51 is installed on the upper side of the interior of the fan body 6, and a motor shaft 5 is fixedly installed on the fan impeller 51, a water jet spray gun 3 is installed on the inner wall of the fan connecting cylinder 9, and a spray pipe 31 is provided on the top of the water jet spray gun 3, a water mist spray gun 2 is fixedly inserted into the interior of the air inlet cylinder 1, and a water mist nozzle 21 is screwed and fixed to the top of the water mist spray gun 2.

[0021] Working principle: Four groups of water mist spray guns 2 are evenly arranged in the air inlet tube 1. The water mist nozzles 21 on the water mist spray guns 2 spray and atomize water flow. The atomize water flow fully contacts the dust-laden flue gas, increasing the amount of water mist with a certain particle size in the flue gas flow. The water mist collides with the impeller surface on the fan impeller 51, so that the impeller surface has a certain cleaning ability and produces a certain water film layer, making it difficult for smoke particles to adhere to its surface; four groups of water jet spray guns 3 are arranged at the air inlet position of the fan impeller 51. When the fan impeller 51 rotates, the jet nozzles 32 installed on the surface of the injection pipe 31 on the four groups of water jet spray guns 3 spray water, which can effectively clean the air. The surface of the fan impeller 51 is fully sprayed and descaled; particles and scale adhering to the surface of the fan impeller 51 can be removed in a timely manner; after the impeller is effectively descaled and cleaned, the fan can operate continuously for a long time; the water mist spray gun 2 and the water jet spray gun 3 are both supplied with water through an external pump station. The pump station mainly consists of valves, high-pressure water pumps, filters, pressure gauges, pressure sensors and electrical control cabinets; it is responsible for boosting the water pressure to 0-1MPa; it is divided into two routes, respectively, through valves, pressure gauges, and delivery pipelines to the vicinity of the fan site; one route is connected to the fan impeller 51 area and the water jet spray gun 3 through a pipe fitting; the other route is connected to the water mist spray gun 2 in the air duct area through a pipe fitting;

[0022] As a preferred embodiment, four groups of water mist spray guns 2 are evenly installed inside the air inlet tube 1, and the angle between two adjacent groups of water mist spray guns 2 is 90°. At the same time, water mist nozzles 21 are set on the tops of the four groups of water mist spray guns 2.

[0023] As a preferred embodiment, the spraying direction of the four groups of water mist nozzles 21 is upward, and the spraying direction of the water mist nozzles 21 is the same as the direction of the flue gas flow. At the same time, the water mist nozzles 21 are atomizing cone nozzles.

[0024] As a preferred embodiment, the axial cross-sections of the fan connecting tube 9 , the connecting tube 8 and the air inlet tube 1 are concentric circle structures, and four groups of mounting seats 4 are evenly arranged on the circumferential inner wall of the fan connecting tube 9 .

[0025] As a preferred embodiment, water jet spray guns 3 are fixedly installed on the four groups of mounting seats 4, and injection pipes 31 are vertically arranged on the top of the four groups of water jet spray guns 3. At the same time, four groups of jet nozzles 32 are evenly installed on the surface of the injection pipe 31, and multiple groups of jet nozzles 32 are arranged opposite to the fan impeller 51.

[0026] As a preferred embodiment, the injection direction surface of the jet nozzle 32 is at 45° to the tangent of the surface of the fan impeller 51, and the vertical distance between the jet nozzle 32 and the surface of the fan impeller 51 is less than 120 mm and greater than 80 mm. At the same time, the four groups of water jet spray guns 3 are symmetrically and evenly installed along the rotating circular surface of the fan impeller 51.

[0027] The water jet spray gun 3 is composed of a spray gun body, a spray pipe 31, and a jet nozzle 32. The jet nozzle 32 is characterized by a small nozzle effective area and a large unit impact force, which can overcome the influence of the flue gas flow rate and effectively spray to the corresponding position to remove sticky particles and scale.

[0028] The water mist spray gun 2 consists of a spray gun body and a water mist nozzle 21. The water mist nozzle 21 is characterized by: atomizing water into a mist field with small water droplets evenly distributed across its cross section; the nozzle spray direction is the same as the flue gas flow direction; the nozzle is installed to be evenly distributed across the air duct cross section. Due to the high water pressure, it can overcome the influence of the flue gas flow velocity and achieve uniform distribution of water droplets across the air duct cross section.

[0029] Four sets of water jet spray guns 3 are added at appropriate positions in the adjacent spaces between the fan air inlet duct 1 and the fan impeller 51 to effectively prevent scaling and clean the impeller, enabling the fan to operate continuously for a long time or requiring only one or two cleanings and dynamic balancing of the converter fan per year, thus avoiding serious restrictions on steelmaking production.

[0030] The jet nozzle 32 on the water jet spray gun 3 has an operating water pressure of 0-10 MPa. The specific water flow rate needs to be adjusted according to the actual conditions of the flue gas dust density, dust type and fan size.

[0031] The jet direction of the jet nozzle 32 is at a 45-degree angle to the surface tangent of the fan impeller 51, so that the jet field can flush the fan blade surface and effectively clean the blade surface;

[0032] The vertical distance between the nozzle of the water jet spray gun 3 and the fan impeller surface is less than 120mm and greater than 80mm; the spray gun body and the mounting point have sufficient strength;

[0033] When installing the water jet gun 3, it must be installed symmetrically and evenly along the rotating circle of the fan impeller 51 to avoid harmful vibration.

[0034] The water mist nozzle 21 on the water mist spray gun 2 has a water mist spraying direction axis that is consistent with the flue gas flow direction; the nozzle is installed so that it is evenly distributed according to the air duct cross section; the water mist nozzle 21 has a higher water pressure, which can overcome the influence of the flue gas flow velocity and achieve uniform distribution of water droplets in the air duct cross section.

[0035] Example 2: Figure 4As shown: the structure of this embodiment is basically the same as that of embodiment one, with the difference being that the jet nozzle 32 in embodiment one is arranged opposite to the fan impeller 51, while in this embodiment, the jet nozzle 32 and the fan impeller 51 are staggered to avoid the high-pressure jet from impacting the surface of the fan impeller 51 and causing water erosion damage to the fan impeller 51. At the same time, the fluid ejected from the jet nozzle 32 can moisten the airflow inside the fan body 6 and settle the dust-laden gas inside the fan body 6, thereby reducing the number of dust particles inside the fan body 6 and the amount of dust attached to the fan impeller 51.

[0036] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An anti-scaling and dust-cleaning device for an online water jet air blower, comprising an air inlet tube (1), characterized in that: The top of the air inlet tube (1) is fixedly connected to the connecting tube (8) through a flange, and a fan connecting tube (9) is fixedly installed on the top of the connecting tube (8), and a fan body (6) is fixedly provided on the top of the fan connecting tube (9), and the fan body (6) and the fan connecting tube (9) are connected. An air outlet tube (7) is fixedly installed on the right side of the fan body (6), and a fan impeller (51) is installed on the upper side of the inner part of the fan body (6), and a motor shaft (5) is fixedly installed on the fan impeller (51). A water jet spray gun (3) is installed on the inner wall of the fan connecting tube (9), and a spray pipe (31) is provided on the top of the water jet spray gun (3). A water mist spray gun (2) is fixedly inserted into the interior of the air inlet tube (1), and a water mist nozzle (21) is screwed and fixed on the top of the water mist spray gun (2).

2. The anti-scaling and dust-cleaning device for an online water jet air blower according to claim 1, characterized in that: Four groups of water mist spray guns (2) are evenly installed inside the air inlet tube (1), and the angle between two adjacent groups of water mist spray guns (2) is 90 degrees. At the same time, water mist nozzles (21) are arranged on the tops of the four groups of water mist spray guns (2).

3. The anti-scaling and dust-cleaning device for an online water jet air blower according to claim 2, characterized in that: The spraying directions of the four groups of water mist nozzles (21) are upward, and the spraying direction of the water mist nozzles (21) is the same as the direction of the flue gas flow. At the same time, the water mist nozzles (21) are atomizing cone nozzles.

4. The anti-scaling and dust-cleaning device for an online water jet air blower according to claim 1, characterized in that: The axial cross-sections of the fan connecting tube (9), the connecting tube (8) and the air inlet tube (1) are concentric circle structures, and four groups of mounting seats (4) are evenly arranged on the circumferential inner wall of the fan connecting tube (9).

5. The anti-scaling and dust-cleaning device for an online water jet air blower according to claim 4, characterized in that: Water jet spray guns (3) are fixedly mounted on the four sets of mounting seats (4), and spray pipes (31) are vertically arranged on the tops of the four sets of water jet spray guns (3). At the same time, four sets of jet nozzles (32) are evenly mounted on the surfaces of the spray pipes (31), and the multiple sets of jet nozzles (32) are arranged opposite to the fan impeller (51).

6. The anti-scaling and dust-cleaning device for an online water jet air blower according to claim 5, characterized in that: The jet direction surface of the jet nozzle (32) is 45 degrees to the tangent line of the fan impeller (51) surface, and the vertical distance between the jet nozzle (32) and the fan impeller (51) surface is less than 120 mm and greater than 80 mm. At the same time, the four groups of water jet spray guns (3) are symmetrically and evenly installed along the rotating circular surface of the fan impeller (51).

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