Mobile metallurgical furnace dedusting system

Abstract

The utility model relates to metallurgical flue gas treatment field discloses a mobile metallurgical furnace dust removal system, including the fixed cover of half surrounding ground in first work station and second work station outside, remove the cover between two work stations, dust removal pipe and dust remover, fan, chimney connected with remove the cover in proper order, be equipped with pipeline beam between remove the cover and dust removal pipe, the front closure board top of fixed cover is equipped with first track, pipeline beam is equipped in fixed cover side, and one end is closed, and the other end is connected with dust removal pipe, and the top of pipeline beam is equipped with second track, and its side corresponds two work stations and is equipped with first butt joint pipe and second butt joint pipe, and both are equipped with electric valve on two butt joint pipes, remove the cover and install in the suspension frame, and the bottom and top of suspension frame are both through the rolling wheel group and move and be equipped with two tracks, and remove the cover is equipped with the dust collection pipe that can butt joint with two butt joint pipes. The utility model can reduce the construction cost of dust removal equipment, also reduced the space requirement of existing factory building to the construction dust removal equipment.

Description

TECHNICAL FIELD

[0001] The utility model relates to metallurgical flue gas treatment field especially relates to a mobile metallurgical furnace dust removal system. BACKGROUND

[0002] In the metal smelting industry, the metal smelting furnace such as electric furnace, refining furnace is common metal smelting equipment, and the equipment such as LF furnace, VD furnace will produce a large amount of high-temperature smoke dust, harmful gas and metal particles during smelting process, and the smelting by-products not only pollute the workshop environment, endanger the health of operators, but also may cause explosion and other safety accidents. 3 .

[0003] At present, the dust removal device commonly used in the smelting furnace in the production workshop is mostly fixed dust hood, such as top suction hood or side suction hood directly installed above the furnace body. The dust collection structure has low smoke gas capture efficiency and poor operation flexibility, and under the working condition that the smelting furnace needs to be frequently lifted, the smelting efficiency and dust removal effect are affected, which is not conducive to efficient and environmentally friendly production of enterprises.

[0004] In recent years, some improved schemes attempt to set the dust hood as two parts of fixed hood and movable hood, and set two metallurgical furnace stations to improve smelting efficiency. The movable hood can move between the two stations, and the fixed hood is peripherally arranged outside the two metallurgical furnace stations. Limited by the complex working conditions on site (such as the metallurgical furnace station close to the power distribution room wall, and the station and the power distribution room wall have a reaction electrode from the power distribution room), the fixed hood can only be peripherally arranged outside the two stations in the form of three-sided enclosure. Under this working condition, only one track for the movement of the movable hood can be arranged at the top of the fixed hood. In order to meet the installation requirements of the movable hood, a track beam needs to be additionally set up, and a track needs to be arranged on the track beam to realize the installation of the movable hood. This setting mode increases the transformation cost of the dust removal system and causes waste of resources. In addition, the dust removal pipe is provided with a butt joint pipe corresponding to the two stations. After the dust collection pipe of the movable hood is connected with the butt joint pipe, there is a gap between the two pipes, which has negative pressure loss at this position, reducing the suction force in the movable hood.

[0005] Therefore, the present application provides a mobile metallurgical furnace dust removal system with reasonable structure design and low transformation cost to solve the above problems. CONTENT OF THE UTILITY MODEL

[0006] The utility model aims at solving the technical problems existing in the prior art. To this end, the utility model provides a mobile metallurgical furnace dust removal system with reasonable structure design and low transformation cost.

[0007] The technical scheme adopted by the utility model to solve its technical problems is:

[0008] The application provides a mobile metallurgical furnace dust removal system, which comprises a fixed cover arranged outside a first station and a second station of a metallurgical furnace in a semi-enclosing manner, a mobile cover moving between the first station and the second station, a dust removal pipe connected with the mobile cover and sequentially connected with a dust remover, a fan and a chimney, a pipeline beam arranged between the mobile cover and the dust removal pipe, a front enclosing plate and side enclosing plates arranged on both sides of the front enclosing plate, wherein a first track is arranged on the top of the front enclosing plate, the pipeline beam is arranged on the side of the fixed cover away from the front enclosing plate through a stand and a support, one end of the pipeline beam is closed, the other end is connected with the dust removal pipe, a second track is arranged on the top of the pipeline beam, first and second connecting pipes are arranged on the side of the pipeline beam corresponding to the first and second stations, and electric valves are arranged on the first and second connecting pipes, the mobile cover is arranged on a suspension frame, the bottom side and the top side of the suspension frame are movably arranged on the first and second tracks through a plurality of rolling wheels, and a dust collecting pipe capable of being connected with the first or second connecting pipe is arranged on the mobile cover.

[0009] In some optional embodiments, the pipeline beam is composed of a square pipe, a plurality of angle irons welded to the inner corners of the square pipe and a plurality of reinforcing plates welded along the length of the square pipe at equal intervals.

[0010] In some optional embodiments, the first and second connecting pipes and the dust collecting pipe are all square pipes, and the first and second connecting pipes are equal in size.

[0011] In some optional embodiments, the height between the outer surfaces of the dust collecting pipe is equal to the height between the inner surfaces of the first connecting pipe, the width between the outer surfaces of the dust collecting pipe is equal to the sum of the width between the inner surfaces of the first connecting pipe and the wall thickness, a first connecting port is arranged on the side of the pipe opening of the first connecting pipe facing the second connecting pipe, a second connecting port is arranged on the side of the pipe opening of the second connecting pipe facing the first connecting pipe, and one end of the dust collecting pipe enters the first and second connecting pipes through the first and second connecting ports respectively and is connected with the first and second connecting pipes.

[0012] In some optional embodiments, the first and second connecting pipes are respectively provided with baffles on the sides of the first and second connecting ports, and the baffles are respectively driven by air cylinders arranged on the first and second connecting pipes and are used for shielding the gaps between the dust collecting pipe and the first and second connecting ports.

[0013] In some optional embodiments, the first and second connecting pipes are respectively provided with L-shaped limiting blocks for limiting the baffles.

[0014] In some optional embodiments, the top and bottom of the first and second connecting ports are respectively provided with upwardly and downwardly bent guide plates.

[0015] In some alternative embodiments, the top of the two side enclosing plates is also provided with a limit switch through a support.

[0016] In some alternative embodiments, a driving motor is arranged on the at least one rolling wheel group.

[0017] Compared with the prior art, the utility model has the beneficial effects that:

[0018] 1. The utility model discloses a dust removal pipeline of a metallurgical furnace, which comprises a pipeline beam and a movable cover.

[0019] 2. The dust collection pipe, the first connecting pipe and the second connecting pipe are connected, and the negative pressure loss is small during dust removal, thereby improving the dust removal effect. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical scheme in the embodiments of the utility model, the drawings needed in the embodiment description will be briefly introduced, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained without creative labor on the basis of these drawings, wherein:

[0021] Figure 1 It is the elevation structure diagram of the mobile metallurgical furnace dust removal system provided by the utility model;

[0022] Figure 2 It is the elevation structure diagram of the mobile metallurgical furnace dust removal system provided by the utility model; Figure 1 It is the elevation structure diagram of the mobile metallurgical furnace dust removal system provided by the utility model;

[0023] Figure 3 It is the elevation structure diagram of the mobile metallurgical furnace dust removal system provided by the utility model; Figure 1 It is the elevation structure diagram of the mobile metallurgical furnace dust removal system provided by the utility model;

[0024] Figure 4 It is the elevation structure diagram of the mobile metallurgical furnace dust removal system provided by the utility model;

[0025] Figure 5 It is the elevation structure diagram of the mobile metallurgical furnace dust removal system provided by the utility model; Figure 4 It is the elevation structure diagram of the mobile metallurgical furnace dust removal system provided by the utility model;

[0026] In the drawings, the components represented by each sign are listed as follows:

[0027] 1 - stationary cover, 2 - mobile cover, 3 - suspension frame, 4 - pipe beam, 4.1 - square pipe, 4.2 - angle iron, 4.3 - reinforcing plate, 5 - dust removal pipe, 6 - dust collector, 7 - fan, 8 - chimney, 9 - first track, 10 - second track, 11 - first butt joint pipe, 11.1 - first butt joint, 12 - second butt joint pipe, 12.1 - second butt joint, 13 - electric valve, 14 - rolling wheel set, 15 - dust collection pipe, 16 - limit switch, 17 - guide plate, 18 - baffle, 19 - air cylinder, 20 - L-shaped limit block, A - first station, B - second station. DETAILED DESCRIPTION

[0028] It should be understood that the specific embodiments described herein are merely exemplary and do not limit the present application.

[0029] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0030] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application;

[0031] In addition, the description of the terms "first", "second" and the like in the present application is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the technical features referred to or implying the number of technical features referred to. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. The terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0032] Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0033] Example 1

[0034] As attached Figures 1 to 3 As shown, this embodiment provides a mobile metallurgical furnace dust removal system, including a fixed cover 1 that is semi-enclosed outside the first station A and the second station B of the metallurgical furnace, a movable cover 2 that moves between the first station and the second station, a dust removal pipe 5 connected to the movable cover, and a dust removal pipe 5, a dust collector 6, a fan 7, and a chimney 8 connected in sequence, wherein:

[0035] The fixed cover 1 is composed of a front enclosure plate and side enclosure plates provided on both sides of the front enclosure plate, wherein the top of the front enclosure plate is provided with a first track 9;

[0036] To address the issue of needing to erect a separate track beam for moving the mobile hood, this embodiment includes a pipe beam 4 between the mobile hood 1 and the dust collection pipe 5. The pipe beam 4 is installed on the existing dust collection pipe's columns and supports. This can also be understood as replacing a portion of the original dust collection pipe with a pipe beam. Specifically, see attached... Figure 2 As shown, both the pipe beam 4 and the dust removal pipe 5 are mounted on the side of the fixed cover 1 away from the front enclosure plate via columns and supports. The pipe beam 4 is a square tubular structure with one end closed and the other end connected to the dust removal pipe 5. A second track 10 is provided on its top, and a first pair of connecting pipes 11 and a second pair of connecting pipes 12 are provided on its sides corresponding to the first and second workstations. Electric valves 13 are provided on the first pair of connecting pipes 11 and the second pair of connecting pipes 12.

[0037] The movable cover 2 is mounted on the suspension frame 3. The bottom side and the top side of the suspension frame 3 are respectively movably mounted on the first track 9 and the second track 10 via multiple sets of rolling wheels 14. The movable cover 2 is provided with a dust collection pipe 15 that can connect with the first connecting pipe 11 or the second connecting pipe 12. Preferably, in this embodiment, at least one set of rolling wheels 14 is equipped with a drive motor, which facilitates the drive motor to drive the suspension frame to move between the first and second workstations.

[0038] Preferred options are listed below. Figure 3 and attached Figure 4 As shown, the pipe beam 4 in this embodiment consists of a square pipe 4.1, multiple angle irons 4.2 welded to the corners inside the square pipe, and several reinforcing plates 4.3 welded at equal intervals along the length of the square pipe. It uses angle irons and reinforcing plates to enhance its structural strength and improve its load-bearing capacity.

[0039] Preferably, the first connecting pipe 11, the second connecting pipe 12 and the dust collecting pipe 15 in the embodiment are all square pipes, and the first connecting pipe 11 and the second connecting pipe 12 are equal in size.

[0040] Preferably, as shown in the accompanying drawings, the embodiment further comprises a limit switch 16 installed on the top of the two side closing plates through a support, and when the left limit switch is triggered, the dust collecting pipe and the first connecting pipe are well connected; when the right limit switch is triggered, the dust collecting pipe and the second connecting pipe are well connected, and after the limit switch is triggered, the suspension frame stops moving, so that the limit switch limits the displacement of the moving cover, thereby ensuring that the dust collecting pipe and the first connecting pipe or the second connecting pipe are well connected (the central axes of the dust collecting pipe and the first connecting pipe or the second connecting pipe are coaxial). Figure 1

[0041] The embodiment changes one end of the original dust collecting pipe into a load-bearing pipe beam, and sets a track on the pipe beam, which cooperates with the track on the fixed cover to enable the movable cover to be movably installed on the pipe beam and the fixed cover through the suspension frame. In this way, the track beam does not need to be reinstalled, the construction cost of the metallurgical furnace dust collecting equipment can be reduced, and the space requirement of the existing plant for the construction of the dust collecting equipment is also reduced to a certain extent.

[0042] In specific implementation, the metallurgical furnace is lifted to the first station, the suspension frame is controlled to move above the first station until the limit switch is triggered and stopped, at this time, the dust collecting pipe on the moving cover is connected with the first connecting pipe, the electric valve on the first connecting pipe is opened, and the high-temperature flue gas, harmful gas and metal particles in the metallurgical furnace during smelting are drawn away by the moving cover. The metallurgical furnace at the first station is lifted to the second station to wait during smelting. When the smelting of the metallurgical furnace at the first station is completed, the suspension frame is controlled to move above the second station until the limit switch is triggered and stopped, at this time, the dust collecting pipe on the moving cover is connected with the second connecting pipe, the electric valve on the second connecting pipe is opened, and the electric valve on the first connecting pipe is closed, then the metallurgical furnace at the first station is lifted away, and the process is repeated.

[0043] Embodiment Two

[0044] On the basis of embodiment one, the embodiment further designs the connecting structure of the dust collecting pipe 15 and the first connecting pipe 11 and the second connecting pipe 12, as shown in the accompanying drawings. Figure 4 and the accompanying drawings. Figure 5 ​As shown, the height between the outer surfaces of the dust collecting pipe 15 is equal to the height between the inner surfaces of the first connecting pipe 11, the width between the outer surfaces is equal to the sum of the width between the inner surfaces of the first connecting pipe 11 and the wall thickness, meanwhile, the first connecting port 11.1 is formed on the side of the pipe opening of the first connecting pipe 11 facing the second connecting pipe 12, the second connecting port 12.1 is formed on the side of the pipe opening of the second connecting pipe 12 facing the first connecting pipe, and one end of the dust collecting pipe 15 enters the first connecting pipe 11 and the second connecting pipe 12 through the first connecting port 11.1 and the second connecting port 12.1 respectively to be connected with the two pipes. The connecting structure of the dust collecting pipe and the connecting pipe in the embodiment only leaves a small gap between the end of the dust collecting pipe and the connecting port, which can effectively reduce the loss of negative pressure of the pipe and improve the dust removal effect.

[0045] Preferably, in order to ensure the smooth connection of the dust collecting pipe with the first connecting pipe and the second connecting pipe, the top and bottom of the first connecting port 11.1 and the second connecting port 12.1 are further provided with upwardly and downwardly bent guide plates 17.

[0046] Embodiment three

[0047] Based on the embodiment two, as shown in the accompanying drawings Figure 4 and the accompanying drawings Figure 5 Further, the first connecting pipe 11 and the second connecting pipe 12 are further provided with baffles 18 on the side of the first connecting port 11.1 and the second connecting port 12.1 respectively, the two baffles 18 are driven by air cylinders 19 arranged on the first connecting pipe and the second connecting pipe respectively, and are used to shield the gap between the dust collecting pipe and the first connecting port and the second connecting port. The embodiment can further solve the problem of the gap between the end of the dust collecting pipe and the connecting port, and further improve the dust removal effect.

[0048] Preferably, the first connecting pipe 11 and the second connecting pipe 12 are further provided with L-shaped limiting blocks 20 for limiting the baffles 18, the L-shaped limiting blocks form limiting grooves with the first connecting pipe and the second connecting pipe to limit the baffles, so that the baffles can only move along the length direction of the connecting pipe.

[0049] The above only describes the embodiments of the present application, and does not limit the patent range of the present application, any equivalent structure or equivalent process transformation according to the content of the present application, or direct or indirect application in other related technical fields, are also included in the patent protection range of the present application.

Claims

1. A mobile metallurgical furnace dust removal system, comprising a fixed cover semi-surrounding outside of a first station and a second station of a metallurgical furnace, a mobile cover moving between the first station and the second station, a dust removal pipe connected with the mobile cover, and a dust removal pipe, a dust remover, a fan and a chimney connected in sequence; characterized in that: A pipe beam is provided between the movable hood and the dust removal pipe; The fixed cover consists of a front enclosure and side enclosures on both sides of the front enclosure, wherein the top of the front enclosure is provided with a first track; The pipe beam is mounted on the side of the fixed cover away from the front enclosure plate by columns and brackets. One end of the pipe beam is closed and the other end is connected to the dust removal pipe. The top of the pipe beam is provided with a second track, and the sides of the pipe beam are provided with a first pair of connecting pipes and a second pair of connecting pipes corresponding to the first and second work positions. Electric valves are provided on the first pair of connecting pipes and the second pair of connecting pipes. The movable cover is installed on a suspension frame. The bottom side and the top side of the suspension frame are respectively movably mounted on the first track and the second track via multiple sets of rolling wheels. The movable cover is provided with a dust collection pipe that can be connected to the first pair of connecting pipes or the second pair of connecting pipes.

2. A mobile metallurgical furnace dust extraction system according to claim 1, characterised in that: The pipe beam consists of a square tube, multiple angle irons welded to the corners inside the square tube, and several reinforcing plates welded at equal intervals along the length of the square tube.

3. The mobile metallurgical furnace dust extraction system of claim 1, wherein: The first pair of connecting pipes, the second pair of connecting pipes, and the dust collection pipe are all made of square tubing, and the first pair of connecting pipes and the second pair of connecting pipes are of equal size.

4. A mobile metallurgical furnace dust extraction system according to claim 3, characterised in that: The height between the outer surfaces of the dust collection pipes is equal to the height between the inner surfaces of the first pair of pipes, and the width between their outer surfaces is equal to the sum of the width between the inner surfaces of the first pair of pipes and the wall thickness. The first pair of pipes has a first pair of interfaces on the side of the pipe opening facing the second pair of pipes, and the second pair of pipes has a second pair of interfaces on the side of the pipe opening facing the first pair of pipes. One end of the dust collection pipe enters the first pair of pipes and the second pair of pipes through the first pair of interfaces and the second pair of interfaces respectively to connect with them.

5. A mobile metallurgical furnace dust extraction system according to claim 4, characterised in that: The first pair of pipes and the second pair of pipes are respectively provided with baffles on one side of the first pair of interfaces and the second pair of interfaces. The two baffles are respectively driven by cylinders provided on the first pair of pipes and the second pair of pipes, and are used to block the gap between the dust collection pipe and the first pair of interfaces and the second pair of interfaces.

6. A mobile metallurgical furnace dust extraction system according to claim 5, characterised in that: The first and second pairs of connecting pipes are also provided with L-shaped limiting blocks for limiting the baffle.

7. The mobile metallurgical furnace dust extraction system of claim 4, wherein: The first pair of interfaces and the second pair of interfaces are provided with guide plates that bend upwards and downwards at the top and bottom.

8. The mobile metallurgical furnace dust extraction system of claim 1, wherein: Limit switches are also installed on the top of the two side enclosure panels via brackets.

9. The mobile metallurgical furnace dust extraction system of claim 1, wherein: At least one set of rolling wheels is equipped with a drive motor.

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