Waste heat recovery structure of submerged arc furnace

Abstract

The utility model relates to the field of submerged arc furnaces, discloses a submerged arc furnace waste heat recovery structure and solves the problem that an existing submerged arc furnace waste heat recovery structure is poor in cleaning effect. Through the driving rod, the first bevel gear, the second bevel gear, the cleaning brush, the third bevel gear, the nail roller, the lantern ring, the connecting rod and the connecting ring, the driving rod at the output end is driven by the motor to rotate, the driving rod drives the first bevel gear and the second bevel gear to be meshed, and the second bevel gear drives the cleaning brush to rotate to clean dust and impurities on the surface of the filter screen. The surface of the driving rod is in bearing connection with a lantern ring, the lantern ring is connected with connecting rings through connecting rods, the two groups of connecting rings are in supporting connection with a cleaning brush and a nail roller, a bevel gear I is meshed with a bevel gear III, and the bevel gear III drives the nail roller to rotate to dredge filtering holes of a filtering net, so that blockage is avoided, and the filtering effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of submerged arc furnaces, in particular to a submerged arc furnace waste heat recovery structure. Background Art

[0002] The flue gas produced during the production of ferrosilicon is discharged into the atmosphere through the main dust removal and filtration. The waste heat of the flue gas is not reasonably utilized. The flue gas temperature is too high during production, resulting in the main dust removal not being burned. At the same time, there is no bathing water in the living area, and the employees cannot wash after production work. In order to solve the problem of employees washing, it is necessary to recover the waste heat of the electric arc furnace for secondary utilization.

[0003] During the operation of the current waste heat recovery structure of the ore-fired furnace, a water-cooled flue is installed on the fifth floor of the ferrosilicon alloy production furnace. The high-temperature flue gas generated by the ore-fired furnace during the production process can be effectively cooled down by the water-cooled flue, ensuring the service life of the bags of the dust removal equipment of the main body of the ore-fired furnace. At the same time, it plays a certain cooling and protective role on the flue body, greatly improving the service life of the flue equipment. The circulating water used in the water-cooled flue is heated up by waste heat exchange to provide it to workers. However, the flue gas contains a large amount of particulate matter or pollutants. Therefore, before the flue gas enters the cooler or waste heat boiler, a filter is installed to filter out these solid particles or pollutants. However, over time, the solid particles on the filter will gradually accumulate and form a blockage, which will increase the resistance of the flue gas through the filter. The solid particles accumulated on the filter may fall off or drift into the surrounding environment, causing air pollution and dust deposition, which will not only affect the ecological environment, but also may have a negative impact on the health of the staff. Utility Model Content

[0004] The utility model aims to provide a waste heat recovery structure of a submerged arc furnace. The device is adopted to work, thereby solving the problem that the cleaning effect of the existing waste heat recovery structure of the submerged arc furnace is poor.

[0005] To achieve the above object, the utility model provides the following technical solutions: a waste heat recovery structure of a submerged arc furnace, comprising a box body, an air inlet pipe and an air outlet pipe arranged at both ends of the box body, a ring arranged inside the box body, a water cooling pipe connected between the rings, and a filter arranged inside the box body, wherein a cleaning structure for filtering dust is arranged inside the box body;

[0006] The cleaning structure includes a motor arranged inside the box, a driving rod arranged at the output end of the motor, a bevel gear 1 arranged on the surface of the driving rod, a bevel gear 2 meshed with one end of the bevel gear 1, and a cleaning brush arranged at one end of the bevel gear 2.

[0007] Furthermore, a fixing plate is arranged inside the box, and the fixing plate is connected to the motor.

[0008] Furthermore, the other end of the bevel gear one is meshed with the bevel gear three, and a nail roller is arranged at one end of the bevel gear three, and the nail block gap of the nail roller is consistent with the filter hole gap.

[0009] Furthermore, a surface bearing of the driving rod is connected with a collar, one end of the collar is provided with a connecting rod, and one end of the connecting rod is provided with a connecting ring.

[0010] Furthermore, two groups of connecting rods and connecting rings are provided, the two groups of connecting rods and connecting rings are symmetrically distributed about the transverse center axis of the ring, and the two groups of connecting rings are respectively connected to the cleaning brush and the spike roller bearing.

[0011] Furthermore, the bristles of the cleaning brush are in contact with the surface of the filter screen, and the length of the cleaning brush is equal to the radius of the filter screen.

[0012] Furthermore, a slag collecting structure is provided inside the box body, and the slag collecting structure includes a placement groove opened inside the box body.

[0013] Furthermore, a slag collecting box is arranged inside the placement groove, magnet one is arranged at both ends of the slag collecting box, and magnet two is arranged on the inner wall of the placement groove, and magnet two and magnet one attract each other with opposite poles.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0015] The utility model proposes a waste heat recovery structure for an electric arc furnace. The existing waste heat recovery structure for an electric arc furnace has poor cleaning effect. The utility model uses a driving rod, bevel gear one, bevel gear two, a cleaning brush, bevel gear three, a nail roller, a sleeve ring, a connecting rod and a connecting ring. The driving rod at the output end driven by a motor rotates, the driving rod drives the bevel gear one and the bevel gear two to engage, the bevel gear two drives the cleaning brush to rotate to clean the dust and impurities on the surface of the filter screen, the driving rod surface bearing is connected with a sleeve ring, the sleeve ring is connected to the connecting ring through a connecting rod, the two groups of connecting rings are connected to the cleaning brush and the nail roller support, the bevel gear one and the bevel gear three engage, the bevel gear three drives the nail roller to rotate to dredge the filter holes of the filter screen to avoid blockage and improve the filtering effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0017] Figure 2 It is a three-dimensional structural schematic diagram of the cleaning structure and slag collecting structure of the utility model;

[0018] Figure 3 It is a three-dimensional unfolded structural schematic diagram of the cleaning structure of the utility model;

[0019] Figure 4 It is a schematic diagram of the three-dimensional unfolded structure of the slag collecting structure of the utility model.

[0020] In the figure: 1. box body; 2. air inlet pipe; 3. air outlet pipe; 4. ring; 5. water cooling pipe; 6. filter; 7. cleaning structure; 71. fixing plate; 72. motor; 73. driving rod; 74. bevel gear one; 75. bevel gear two; 76. cleaning brush; 77. bevel gear three; 78. nail roller; 79. sleeve ring; 710. connecting rod; 711. connecting ring; 8. slag collecting structure; 81. placing groove; 82. slag collecting box; 83. magnet one; 84. magnet two. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] In order to further understand the content of the utility model, the utility model is described in detail in conjunction with the accompanying drawings.

[0023] Combination Figure 1-Figure 3 A waste heat recovery structure of an electric arc furnace includes a box body 1, an air inlet pipe 2 and an air outlet pipe 3 arranged at both ends of the box body 1, a ring 4 arranged inside the box body 1, a water cooling pipe 5 connected between the rings 4, and a filter screen 6 arranged inside the box body 1. A cleaning structure 7 for filtering dust is arranged inside the box body 1.

[0024] The utility model is further described below in conjunction with embodiments.

[0025] Embodiment 1:

[0026] See also Figure 1-Figure 3The cleaning structure 7 includes a motor 72 arranged inside the housing 1, a driving rod 73 arranged at the output end of the motor 72, a bevel gear 1 74 arranged on the surface of the driving rod 73, a bevel gear 2 75 meshed with one end of the bevel gear 1 74, and a cleaning brush 76 arranged at one end of the bevel gear 2 75. A fixing plate 71 is arranged inside the housing 1, and the fixing plate 71 is connected to the motor 72. A bevel gear 3 77 is meshed with the other end of the bevel gear 1 74, and a nail roller 78 is arranged at one end of the bevel gear 3 77. The nail block gap of the nail roller 78 is consistent with the filter hole gap. The surface bearing of the driving rod 73 is connected with a collar 79, one end of the collar 79 is provided with a connecting rod 710, one end of the connecting rod 710 is provided with a connecting ring 711, two groups of connecting rods 710 and connecting rings 711 are provided, the two groups of connecting rods 710 and connecting rings 711 are symmetrically distributed about the transverse center axis of the collar 79, the two groups of connecting rings 711 are respectively connected with the cleaning brush 76 and the nail roller 78 bearings, the bristles of the cleaning brush 76 are in contact with the surface of the filter screen 6, the length of the cleaning brush 76 is equal to the radius of the filter screen 6, to avoid blockage and improve the filtering effect.

[0027] Specifically, the air inlet pipe 2 is connected to the flue gas outlet of the ore-fired furnace, so that the flue gas enters the inner cavity of the box body 1 through the air inlet pipe 2, and the water cooling pipe 5 connected through the ring 4 absorbs heat from the flue gas, and the waste heat in the flue gas is recycled and reused. The cold water inside the water cooling pipe 5 absorbs heat, and the water inside the water cooling pipe 5 is heated and transported to the inside of the bathing pipe at the other end. Since the dust and impurities inside the flue gas are mixed, they are filtered through the filter 6, and then the purified gas is discharged through the air outlet pipe 3. After long-term use, the surface of the filter 6 is attached with a lot of dust and impurities, and the fixing plate 71 is pushed up by the external button. The motor 72 at the end is started, and the driving rod 73 at the output end driven by the motor 72 rotates, and the driving rod 73 drives the bevel gear 1 74 and the bevel gear 2 75 to engage, and the bevel gear 2 75 drives the cleaning brush 76 to rotate to clean the dust and impurities on the surface of the filter 6. The bearing on the surface of the driving rod 73 is connected with a ring 79, and the ring 79 is connected to the connecting ring 711 through a connecting rod 710. The two sets of connecting rings 711 are supported and connected with the cleaning brush 76 and the nail roller 78. The bevel gear 1 74 and the bevel gear 3 77 are engaged, and the bevel gear 3 77 drives the nail roller 78 to rotate to dredge the filter holes of the filter 6 to avoid blockage and improve the filtering effect.

[0028] Embodiment 2:

[0029] See also Figure 4 A slag collecting structure 8 is provided inside the box body 1, and the slag collecting structure 8 includes a placement groove 81 opened inside the box body 1, a slag collecting box 82 is provided inside the placement groove 81, magnets 1 83 are provided at both ends of the slag collecting box 82, and magnets 2 84 are provided on the inner wall of the placement groove 81. Magnets 2 84 and magnets 1 83 attract each other with opposite poles, which is convenient for uniformly dumping impurities and dust inside the slag collecting box 82.

[0030] Specifically, a slag collecting box 82 is provided inside the placement groove 81 to remove dust from the filter screen 6 of the cleaning structure 7, so that impurities and dust fall into the interior of the slag collecting box 82. The slag collecting box 82 is fixed by attracting each other through the opposite poles of the magnet 1 83 at both ends and the magnet 2 84 poured into the inner wall of the placement groove 81, which facilitates the disassembly of the slag collecting box 82 and uniformly dumps the impurities and dust inside the slag collecting box 82.

[0031] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0032] Although the 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 waste heat recovery structure for a submerged arc furnace, comprising a housing (1), an air inlet pipe (2) and an air outlet pipe (3) arranged at both ends of the housing (1), a circular ring (4) arranged inside the housing (1), a water cooling pipe (5) connected between the circular rings (4), and a filter (6) arranged inside the housing (1), characterized in that: A cleaning structure (7) for filtering and removing dust is provided inside the box (1); The cleaning structure (7) comprises a motor (72) arranged inside the housing (1), a driving rod (73) arranged at the output end of the motor (72), a bevel gear 1 (74) arranged on the surface of the driving rod (73), a bevel gear 2 (75) meshed with one end of the bevel gear 1 (74), and a cleaning brush (76) arranged at one end of the bevel gear 2 (75).

2. The waste heat recovery structure of a submerged arc furnace according to claim 1, characterized in that: A fixing plate (71) is arranged inside the box body (1), and the fixing plate (71) is connected to the motor (72).

3. The waste heat recovery structure of a submerged arc furnace according to claim 1, characterized in that: The other end of the bevel gear one (74) is meshed with a bevel gear three (77), and a nail roller (78) is arranged at one end of the bevel gear three (77), and the nail block gap of the nail roller (78) is consistent with the filter hole gap.

4. The waste heat recovery structure of a submerged arc furnace according to claim 1, characterized in that: The surface bearing of the driving rod (73) is connected with a collar (79), one end of the collar (79) is provided with a connecting rod (710), and one end of the connecting rod (710) is provided with a connecting ring (711).

5. The waste heat recovery structure of a submerged arc furnace according to claim 4, characterized in that: The connecting rods (710) and the connecting rings (711) are each provided with two groups, and the two groups of the connecting rods (710) and the connecting rings (711) are symmetrically distributed about the transverse central axis of the collar (79), and the two groups of the connecting rings (711) are respectively connected to the cleaning brush (76) and the nail roller (78) bearings.

6. The waste heat recovery structure of a submerged arc furnace according to claim 5, characterized in that: The bristles of the cleaning brush (76) are in contact with the surface of the filter screen (6), and the length of the cleaning brush (76) is equal to the radius of the filter screen (6).

7. The waste heat recovery structure of a submerged arc furnace according to claim 1, characterized in that: A slag collecting structure (8) is provided inside the box body (1), and the slag collecting structure (8) comprises a placement groove (81) opened inside the box body (1).

8. The waste heat recovery structure of a submerged arc furnace according to claim 7, characterized in that: A slag collecting box (82) is arranged inside the placement groove (81), two ends of the slag collecting box (82) are provided with a first magnet (83), and the inner wall of the placement groove (81) is provided with a second magnet (84), and the second magnet (84) and the first magnet (83) have opposite poles that attract each other.

Images