Converter dry dust collector on-line ash cleaning device and method

Abstract

The present application belongs to the technical field of steel production, and relates to an on-line dust cleaning device and method for a converter dry dust collector, wherein the on-line dust cleaning device for the converter dry dust collector is arranged at the inlet and outlet of the dust collector, the on-line dust cleaning device for the converter dry dust collector comprises dust cleaning guns arranged at both sides of the electric field on the outlet side and / or the inlet side of the converter dry dust collector, and the dust cleaning guns are communicated with a nitrogen pipe network through metal hoses; a pneumatic ball valve is arranged on the dust cleaning gun and used for nitrogen on-off control, the pneumatic ball valve is connected with a PLC output relay and controlled by the PLC, and the dust cleaning gun is manually or automatically controlled. When the scraper device at the inlet side or the outlet side of the dust collector fails, the pneumatic ball valve is controlled by the PLC output relay, the dust cleaning gun is automatically controlled, and the accumulated dust is blown into a fine dust conveying machine by nitrogen, so that dust accumulation is avoided, and the problem of dust accumulation caused by the failure of the scraper device of the dust collector to normally scrape dust is solved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of steel production, and relates to an on-line dust cleaning device and method for a converter dry dust collector. BACKGROUND

[0002] Currently, in the converter dry dust collector, the dust captured by the electric field is scraped into a fine dust conveying machine by a scraper device reciprocating left and right, and then is treated in a dust conveying system. Since the scraper device is operated in a high-temperature and high-dust environment for a long time, once the scraper device is stopped due to faults such as tooth jumping and blocking, due to the characteristics of continuous production of steelmaking, the scraper device cannot be processed at any time, and generally can only be processed during the converter maintenance, during which dust will continue to accumulate. Therefore, the scraper device fault cannot be processed until the dust is manually cleaned for more than 16 hours, and thus the converter maintenance period of 8-10 hours cannot be met. SUMMARY

[0003] Therefore, the purpose of the present application is to solve the problem of dust accumulation caused by the scraper device fault of the converter dry dust collector, and to provide an on-line dust cleaning device and method for a converter dry dust collector.

[0004] To achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0005] An on-line dust cleaning device for a converter dry dust collector, comprising a dust cleaning gun arranged on both sides of the electric field at the outlet side and / or the inlet side of the converter dry dust collector, and the dust cleaning gun is in communication with a nitrogen pipe network through a metal hose; a pneumatic ball valve is arranged on the dust cleaning gun for nitrogen on-off control, the pneumatic ball valve is connected with a PLC output relay and is controlled by the PLC to realize manual or automatic control of the dust cleaning gun.

[0006] Further, the dust cleaning gun has multiple guns arranged in two rows at different heights, and each row has several guns.

[0007] Further, the dust cleaning gun has 5 guns in each row.

[0008] Further, the dust cleaning gun is made of a φ15 galvanized pipe and is inserted into the dust collector.

[0009] An on-line dust cleaning method for a converter dry dust collector, wherein the above-mentioned on-line dust cleaning device for a converter dry dust collector is arranged at the inlet and outlet of the dust collector, when the scraper device at the inlet side or the outlet side of the dust collector fails, the pneumatic ball valve is controlled by the PLC output relay to realize automatic control of the dust cleaning gun, and the accumulated dust is blown into the fine dust conveying machine by nitrogen, thereby avoiding dust accumulation.

[0010] Further, when the on-line dust cleaning device for a converter dry dust collector is installed, the device cannot contact the pole plate and the pole line.

[0011] The present application has the following advantages:

[0012] The converter dry dust collector online dust cleaning is realized, dust accumulation caused by scraper failure is avoided, converter maintenance dust collector manual dust cleaning time is eliminated, and labor intensity is reduced.

[0013] Other advantages, objects, and features of the application will be set forth in part in the following specification taken in conjunction with the accompanying drawings, and in part will become apparent to those skilled in the art from a consideration of the following specification and drawings. The objects and other advantages of the application will be realized and attained by means of the instrumentalities and combinations pointed out in the following specification. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to make the objects, technical solutions and advantages of the present application clearer, the preferred embodiments of the present application will be described in detail below with reference to the drawings, in which:

[0015] Figure 1 It is a front view of the converter dry dust collector online dust cleaning device in the present application.

[0016] Figure 2 It is a side view of the converter dry dust collector online dust cleaning device in the present application. Figure 1

[0017] Figure 3 It is a schematic diagram of PLC controlling pneumatic ball valve.

[0018] Label description: 1 - dust cleaning gun; 2 - pneumatic ball valve; 3 - nitrogen pipe network; 4 - metal hose; 5 - relay. DETAILED DESCRIPTION

[0019] The embodiments of the present application will be described below through specific concrete examples, and other advantages and effects of the present application can be easily understood by those skilled in the art from the disclosure of the specification. The present application can also be implemented or applied through other different specific embodiments, and various modifications or changes can be made to the details in the specification based on different views and applications without departing from the spirit of the present application. It should be noted that the drawings provided in the following examples only illustrate the basic concept of the present application in a schematic manner, and the following examples and features in the examples can be combined with each other without conflict.

[0020] Wherein, the drawings are only used for exemplary illustration, and the representation is only a schematic diagram, not a physical diagram, and cannot be understood as a limitation on the present application; in order to better illustrate the embodiments of the present application, some components in the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it can be understood that some known structures and their descriptions in the drawings may be omitted.​

[0021] The same or similar reference numerals in the drawings of the embodiments of the present application correspond to the same or similar components; in the description of the present application, it should be understood that the orientations or positional relationships indicated by terms such as "upper", "lower", "left", "right", "front", "back", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore the terms describing the positional relationships in the drawings are only used for exemplary illustration, and cannot be understood as a limitation on the present application. The specific meanings of the above terms can be understood according to the specific circumstances by those of ordinary skill in the art.

[0022] Please refer to Figures 1 to 3 A converter dry dust collector online ash removal device, including the installation in the outlet side and / or inlet side of the converter dry dust collector both sides of the electric field of the ash removal gun 1, the ash removal gun 1 uses φ15 galvanized pipe production, insert dust collector. Ash removal gun 1 is communicated with nitrogen pipe network 3 through metal hose 4, ash removal gun 1 is provided with pneumatic ball valve 2, for nitrogen switch control, pneumatic ball valve 2 is connected with PLC output relay 5, and is controlled by PLC, realizes manual or automatic control ash removal gun 1. Among them, ash removal gun 1 has multiple, is arranged into two rows according to different height, and 5 are arranged in each row.

[0023] A converter dry dust collector online ash removal method, the inlet and outlet of 210t converter dry dust collector are arranged with the converter dry dust collector online ash removal device in the embodiment, when the converter dry dust collector online ash removal device is installed, cannot contact the polar plate, polar line. When the scraper device at the inlet side or outlet side of the dust collector fails, each pneumatic ball valve 2 is controlled by PLC output relay 5, to realize automatic control ash removal gun 1, and the accumulated ash is blown into the fine ash dust feeder by nitrogen, so as to avoid dust accumulation. Successfully realized online ash removal, effectively avoided dust accumulation caused by scraper failure, and reduced the loss of converter output.

[0024] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the present application and not to limit, although the present application has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present application can be modified or replaced equivalently without departing from the purpose and scope of the present technical solutions, which should be covered in the scope of the claims of the present application.

Claims

1. An online dust removal method for a converter dry dust collector, characterized in that: Online cleaning devices for converter dry dust collectors are installed at both the inlet and outlet of the dust collector. These devices include cleaning guns located on both sides of the electric field on the outlet and / or inlet sides of the converter dry dust collector. The cleaning guns are connected to the nitrogen pipeline network via flexible metal hoses. Each cleaning gun is equipped with a pneumatic ball valve for nitrogen switching control. The pneumatic ball valve is connected to a PLC output relay and is controlled by the PLC to achieve manual or automatic control of the cleaning guns. Multiple cleaning guns are arranged in two rows at different heights, with five guns in each row. The cleaning guns are made of φ15 galvanized pipe and inserted into the dust collector. When the scraper device on the inlet or outlet side of the dust collector malfunctions, the pneumatic ball valve is controlled by the PLC output relay to automatically control the dust cleaning gun, using nitrogen to blow the accumulated dust into the fine dust conveyor, thereby preventing dust accumulation.

2. The online dust removal method for a converter dry dust collector according to claim 1, characterized in that: When installing the online dust removal device for a converter dry dust collector, it is important to avoid contact with the electrode plates and wires.

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