Material blocking and filtering device and blast furnace main belt feeding system

Abstract

The utility model relates to a material blocking and filtering device and a blast furnace main belt feeding system, the material blocking and filtering device comprises a material blocking body installed on a blast furnace main belt, the material blocking body is provided with filtering holes, and the aperture size of the filtering holes is smaller than the diameter size of a blast furnace throat. The aperture size of the filtering holes in the material blocking body is smaller than the diameter size of the furnace throat of the blast furnace, so that all metal and non-metal materials larger than the aperture size can be blocked, and non-magnetic alloy and non-metal materials can be effectively removed; the device is of a mechanical structure and is simple in structure and convenient to maintain.

Description

Technical Field

[0001] The utility model relates to the technical field of metallurgical blast furnaces, in particular to a material blocking and filtering device and a main belt feeding system for a blast furnace. Background Technique

[0002] The main belt feeding system of the blast furnace in the metallurgical industry is an indispensable part of the iron and steel production process, which is directly related to ironmaking efficiency and production safety. While the main belt feeding process is convenient, a new hidden danger is the problem of foreign objects blocking the conveying channel.

[0003] In common designs, an iron remover is used on the main belt to remove magnetic impurities such as iron. During the processing and transportation of raw materials such as coal and mines, ferromagnetic substances such as bolts and steel wires may accidentally mix in. If these impurities enter equipment such as crushers and grinding mills, it may cause equipment damage or production accidents. The iron remover can effectively adsorb and remove these potential dangerous substances to ensure the safe operation of the entire production line. However, it is powerless against non-magnetic materials. A considerable part of non-magnetic alloys and non-metallic materials can cause blockage at the position of the blast furnace throat. After this position is blocked, it is extremely difficult to handle. This position is generally at the top of a 60m blast furnace, with a harsh environment filled with toxic gases. Entering this area even requires reporting, and multiple people carry carbon monoxide alarm instruments to supervise each other during the operation.

[0004] Therefore, based on the experience and practice of being engaged in the relevant industry for many years, the inventor proposes a material blocking and filtering device and a main belt feeding system for a blast furnace to overcome the defects of the prior art. Content of the Utility Model

[0005] The purpose of the utility model is to provide a material blocking and filtering device and a main belt feeding system for a blast furnace. The aperture size of the filtering holes on the material blocking body of the utility model is smaller than the diameter size of the blast furnace throat, which can block all metals and non-metallic materials larger than this aperture, effectively removing non-magnetic alloys and non-metallic materials; the utility model is a mechanical structure with a simple structure and convenient maintenance location.

[0006] The purpose of the utility model is realized in this way. A material blocking and filtering device includes a material blocking body installed on the main belt of the blast furnace. Filtering holes are arranged on the material blocking body, and the aperture size of the filtering holes is smaller than the diameter size of the blast furnace throat.

[0007] In a preferred embodiment of the utility model, wheels are installed at the bottom end of the material blocking body.

[0008] In a preferred embodiment of the utility model, the material blocking body adopts a square hole grid structure.

[0009] In a preferred embodiment of the present utility model, the size specifications of the filtering holes are 400mm x 400mm, 500mm x 500mm, or 600mm x 600mm.

[0010] In a preferred embodiment of the present utility model, the shape of the filtering holes on the material blocking body is circular or polygonal.

[0011] In a preferred embodiment of the present utility model, the material blocking and filtering device further includes a hydraulic push rod for maintenance.

[0012] In a preferred embodiment of the present utility model, a sensor for monitoring the blockage condition of the filtering holes is provided on the material blocking body.

[0013] The object of the present utility model can also be achieved in this way. A charging system for the main belt of a blast furnace includes a head hopper, and the aforementioned material blocking and filtering device is provided at the head hopper.

[0014] In a preferred embodiment of the present utility model, a sensor for monitoring the blockage condition of the filtering holes is provided on the material blocking body, an anti-blocking switch is provided in the head hopper, and the sensor and the anti-blocking switch are interlocked.

[0015] As described above, the material blocking and filtering device of the present utility model and the charging system for the main belt of a blast furnace have the following beneficial effects:

[0016] In the present utility model, filtration is carried out relying on the filtering holes on the material blocking body, which belongs to mechanical filtration and has no power consumption requirement during operation; the aperture size of the filtering holes on the material blocking body is smaller than the diameter size of the blast furnace throat, and it can block all metal and non-metal materials larger than this aperture, effectively removing non-magnetic alloys and non-metal materials; the present utility model is a mechanical structure, with a simple structure and convenient maintenance positions.

[0017] The charging system for the main belt of a blast furnace adopting the material blocking and filtering device can effectively filter metals and non-metals, and at the same time can reduce the labor intensity of workers and the maintenance risk. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The following drawings are only intended to illustrate and explain the present utility model schematically and do not limit the scope of the present utility model. Among them:

[0019] Figure 1 is the charging system for the main belt of a blast furnace equipped with the material blocking and filtering device of the present utility model.

[0020] Figure 2 is the top view of the material blocking and filtering device of the present utility model.

[0021] In the figure:

[0022] 1. Head funnel;

[0023] 2. Material retaining and filtering device;

[0024] 21. Material retaining body; 22. Wheels; 23. Hydraulic push rod;

[0025] 3. Track. Detailed implementation manners

[0026] For a clearer understanding of the technical features, objectives, and effects of the present utility model, the detailed implementation manners of the present utility model will now be described with reference to the accompanying drawings.

[0027] The detailed implementation manners of the present utility model described herein are only for explaining the objectives of the present utility model and should not be construed in any way as a limitation to the present utility model. Under the teaching of the present utility model, those skilled in the art can conceive of any possible deformations based on the present utility model, and all of these should be regarded as belonging to the scope of the present utility model. It should be noted that when an element is referred to as being "disposed on" another element, it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a mechanical connection or an electrical connection, or it can be the communication inside two elements. It can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances. The terms "vertical", "horizontal", "upper", "lower", "left", "right", and similar expressions used herein are only for the purpose of illustration and do not represent the only implementation manner.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific implementation manners and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0029] As Figure 1 、 Figure 2 shown, the present utility model provides a material retaining and filtering device 2, which includes a material retaining body 21 installed on the main belt of the blast furnace. Filter holes are provided on the material retaining body 21, and the aperture size of the filter holes is smaller than the diameter size of the blast furnace throat.

[0030] The material retaining and filtering device 2 can effectively remove non-magnetic alloys and non-metallic materials, and these two types of materials mainly come from the blast furnace bunker, including bunker lining plates, discharged bunker wear-resistant materials, and large pieces of the bunker surface side walls.

[0031] In this utility model, filtration is carried out relying on the filtration holes on the material retaining body, which belongs to mechanical filtration and has no power consumption requirement during operation; the aperture size of the filtration holes on the material retaining body is smaller than the diameter size of the blast furnace throat, and all metals and non-metallic materials larger than this aperture can be blocked, effectively removing non-magnetic alloys and non-metallic materials; this utility model is a mechanical structure with a simple structure and convenient maintenance position, which can reduce the labor intensity of workers and the maintenance risk.

[0032] Furthermore, the material retaining and filtering device 2 of this utility model adopts the structure form of a material retaining and filtering trolley, and wheels 22 are installed at the bottom end of the material retaining body 21, and the wheels 22 can move along the track 3.

[0033] Furthermore, the material retaining body 21 adopts a square hole grid structure.

[0034] In the specific embodiment of this utility model, the size specifications of the filtration holes can be 400mm x 400mm, 500mm x 500mm or 600mm x 600mm, etc., and the size specifications of the filtration holes are determined by the actual production.

[0035] Furthermore, the shape of the filtration holes on the material retaining body 21 can also adopt shapes such as circular or polygonal, etc., to effectively intercept materials with a size larger than the diameter of the blast furnace throat.

[0036] Furthermore, as Figure 2 shown, the material retaining and filtering device 2 also includes a hydraulic push rod 23 for maintenance. The material retaining and filtering device 2 usually does not need to use electricity, and only needs to use the hydraulic push rod 23 during maintenance. In this embodiment, connection lugs are arranged on the material retaining body 21, and the hydraulic push rod 23 is connected to the connection lugs, and the movement of the material retaining and filtering device 2 along the track is realized through the telescopic movement of the hydraulic push rod 23. When maintenance is required, the hydraulic push rod 23 extends to push the material retaining and filtering device 2 to the maintenance position.

[0037] Furthermore, sensors for monitoring the blockage situation of the filtration holes are arranged on the material retaining body 21, so as to timely clean the materials filtered by the material retaining and filtering device 2 and avoid obstruction during the feeding process.

[0038] As Figure 1 shown, this utility model also provides a main belt feeding system for a blast furnace, including a head hopper 1, and the aforementioned material retaining and filtering device 2 is arranged at the head hopper 1.

[0039] Furthermore, sensors for monitoring the blockage situation of the filtration holes are arranged on the material retaining body 21, an anti-blocking switch is arranged inside the head hopper 1, and the sensors and the anti-blocking switch are interlocked. When the sensors detect that all the filtration holes on the material retaining body 21 are blocked, a signal is transmitted to the anti-blocking switch to stop the feeding operation, remove the material retaining and filtering device 2, and clean it.

[0040] In a specific embodiment of the present utility model, the installation position of the material blocking and filtering device 2 is located at the central transfer station, with a height of approximately 12 m. The maintenance position is convenient and there is no toxic gas.

[0041] The blast furnace main belt feeding system adopting the material blocking and filtering device 2 can effectively filter metals and non-metals, and at the same time can reduce the labor intensity of workers and reduce the maintenance risk.

[0042] As described above, the material blocking and filtering device and the blast furnace main belt feeding system of the present utility model have the following beneficial effects:

[0043] In the present utility model, filtration is carried out by relying on the filtration holes on the material blocking body, which belongs to mechanical filtration and has no power consumption requirement during operation; the aperture size of the filtration holes on the material blocking body is smaller than the diameter size of the blast furnace throat, and can block all metal and non-metal materials larger than the aperture, effectively removing non-magnetic alloys and non-metal materials; the present utility model is a mechanical structure, with a simple structure and a convenient maintenance position;

[0044] The blast furnace main belt feeding system adopting the material blocking and filtering device can effectively filter metals and non-metals, and at the same time can reduce the labor intensity of workers and reduce the maintenance risk.

[0045] The above description is only a schematic specific embodiment of the present utility model and is not intended to limit the scope of the present utility model. Any equivalent changes and modifications made by those skilled in the art without departing from the concept and principles of the present utility model shall fall within the scope of protection of the present utility model.

Claims

1. A material blocking and filtering device, characterized in that: The invention comprises a material blocking body installed on the main belt of the blast furnace. The material blocking body is provided with filtering holes, and the aperture size of the filtering holes is smaller than the diameter size of the throat of the blast furnace.

2. The material blocking and filtering device according to claim 1, characterized in that: A wheel is installed at the bottom end of the material blocking body.

3. The material blocking and filtering device according to claim 1, characterized in that: The material blocking body adopts a square hole grid structure.

4. The material blocking and filtering device according to claim 3, characterized in that: The size of the filter hole is 400mmx400mm, 500mmx500mm or 600mmx600mm.

5. The material blocking and filtering device according to claim 1, characterized in that: The filtering holes on the material blocking body are in the shape of a circle or a polygon.

6. The material blocking and filtering device according to claim 2, characterized in that: The material blocking and filtering device also includes a hydraulic push rod for maintenance.

7. The material blocking and filtering device according to claim 1, characterized in that: A sensor for monitoring the blocking condition of the filter holes is arranged on the material blocking body.

8. A blast furnace main belt feeding system, characterized in that: It comprises a head funnel, on which the material blocking and filtering device as described in any one of claims 1 to 7 is arranged.

9. The blast furnace main belt feeding system according to claim 8, characterized in that: A sensor for monitoring the blocking condition of the filter holes is arranged on the material blocking body, an anti-blocking switch is arranged in the head funnel, and the sensor is interlocked with the anti-blocking switch.

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