Improved blast furnace slag treatment unit

Abstract

An improved blast furnace slag treatment device includes an upper shell, inside which a dewatering device is installed. The dewatering device has a cylindrical structure and an assembly of crossbeams inside. Gear rings and support rings are respectively provided on the outer periphery of both ends of the dewatering device along its axial direction. Two sets of drive mechanisms are symmetrically arranged around the center of the gear rings, and the output ends of the drive mechanisms are connected to the gear rings for transmission. The bottom of both the support rings and the gear rings is equipped with roller assemblies that roll in cooperation with them. This blast furnace slag treatment device discloses a quick-change structure for the roller assemblies supporting the dewatering device, greatly shortening the replacement time of spare parts and improving production efficiency. The use of a dual-drive mechanism to drive the dewatering device eliminates the horizontal force generated during the operation of the dewatering device driven by a single drive mechanism, reduces circumferential force, and increases the service life of the rollers.

Description

Technical Field

[0001] This invention relates to a blast furnace slag treatment device, specifically an improved blast furnace slag treatment device that can enhance stability during the slag treatment process. Background Technology

[0002] Most existing blast furnace slag treatment technologies employ traditional water quenching processes, such as bottom filtration and horizontal flow tank methods. Traditional water quenching processes result in slag with high moisture content. The granulation process of molten slag during water quenching generates a large amount of water vapor, which not only corrodes the plant and equipment but also negatively impacts the working environment due to the large amount of steam overflowing.

[0003] For example, Chinese patent CN207193315U, entitled "An Improved Slag Granulation System," discloses an improved slag granulation system. Inside the water-slag filtration device, a slag-water buffer is installed between the inlet and outlet channels, supported by a beam. The buffer includes several sets of left and right supports, symmetrically arranged around the centerline of the water-slag filtration device. A slag-water buffer assembly is located between the left and right supports, positioned at a certain angle. A portion of the slag-water buffer assembly, farther from the outlet channel, faces the outlet channel, while another portion, farther from the inlet channel, faces the inlet channel. In this patent, the water-slag filtration device uses a single-drive mechanism to power the dewatering unit.

[0004] The device structure disclosed in the aforementioned patent documents is reasonably designed and can solve the technical defects of traditional methods. However, in actual use, the water sludge filtration and dewatering device generates horizontal force during rotation, which causes horizontal displacement when the dewaterer is running. As a result, the rollers used to support the dewaterer are easily damaged by the pressure of the horizontal force. Since the roller seats supporting the rollers are fixedly installed, the spare parts and replacement time of the rollers are long, resulting in low efficiency and affecting the production progress. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the purpose of this invention is to provide an improved blast furnace slag treatment device, which not only solves the problems of the traditional water quenching process, but also ensures stable equipment operation, easy disassembly and assembly of the idler roller assembly, short replacement time of spare parts, and improved operating efficiency.

[0006] The above-mentioned technical objective of this invention patent is achieved through the following technical solution: an improved blast furnace slag treatment device, including an upper shell, wherein a dewatering device is provided inside the upper shell, the dewatering device has a cylindrical structure, and a crossbeam assembly is provided inside the dewatering device; The dewatering device has a toothed ring and a support ring on the outer periphery of its two ends in the axial direction, and two sets of drive mechanisms are symmetrically arranged along the center of the toothed ring. The output end of the drive mechanism is connected to the toothed ring for transmission. The bottom of the support ring and the toothed ring are equipped with rollers that roll with them.

[0007] As a preferred technical solution: the two sets of drive mechanisms are respectively located on both sides of the gear ring, and the gears at the output end of the drive mechanism mesh with the teeth on both sides of the gear ring and are synchronously transmitted.

[0008] As a preferred technical solution, the number of idler roller combinations is four sets, and the four sets of idler roller combinations are symmetrically arranged along the axial and radial directions of the dewatering unit, and the distance between the axial idler roller combinations is greater than the distance between the radial idler roller combinations.

[0009] As a preferred technical solution: the idler assembly includes an idler, an idler base, and an idler shaft pressure plate; the idler base includes a base body and a fixed slider; the base body includes a rib plate and a side wing plate, the upper part of which is a quarter-circle arc structure; the fixed slider is an inverted "T" shape, and its front is a quarter-circle arc structure; the side wing plate and the fixed slider are spliced ​​together to form a semi-circular groove for placing the idler shaft.

[0010] As a preferred technical solution: the idler roller base includes a rectangular base plate, two stiffening plates perpendicular to the base plate along its four edges, and two side wing plates; the two side wing plates are symmetrically arranged along the central horizontal axis of the base plate, and the two stiffening plates are symmetrically arranged along the central longitudinal axis of the base plate.

[0011] As a preferred technical solution: the height of the side wing plate is greater than the height of the stiffener plate; an inwardly facing boss is provided on the inner side of the upper part of the side wing plate, and the thickness of the upper part of the side wing plate is twice the thickness of the other parts of the side wing plate.

[0012] As a preferred technical solution: an inner groove is provided in the central part of the side wing plate; a slider protrusion is provided at the bottom of the arc-shaped part in front of the fixed slider; the size of the inner groove matches the slider protrusion.

[0013] As a preferred technical solution, the rear side of the slider protrusion and the rear side of the inner groove are mutually corresponding inclined structures.

[0014] As a preferred technical solution: the base body and the fixed slider are assembled and then fixedly connected by fixing bolts; the roller shaft pressure plate is placed on top of the base body and the fixed slider, and is fixedly connected by mounting bolts.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: The blast furnace slag treatment device disclosed in the present invention adopts a quick-change structure for the roller assembly supporting the dewatering device, which greatly shortens the replacement time of spare parts and improves production efficiency; the dual-drive mechanism drives the dewatering device to rotate, which eliminates the horizontal force generated during the operation of the dewatering device driven by the single-drive mechanism, reduces the circumferential force, and increases the service life of the rollers. Attached Figure Description

[0016] Figure 1This is the front view of the present invention; Figure 2 This is a cross-sectional view of the present invention; Figure 3 This is a top view of the present invention; Figure 4 A combined output characteristic curve of the asynchronous motor and the hydraulic coupling; Figure 5 This is a schematic diagram of the installation of the idler rollers and idler roller assembly in this invention; Figure 6 This is a schematic diagram of the structure of the base body in this invention.

[0017] Figure 7 This is a schematic diagram of the fixed slider in this invention.

[0018] Figure 8 This is a schematic diagram of the overall structure of the idler roller assembly in this invention.

[0019] Figure 9 This is a three-dimensional structural diagram of the present invention.

[0020] The components include: 1. Upper shell; 2. Dehydrator; 3. Crossbeam assembly.

[0021] The upper shell includes: 11 round heaven and square earth, 12 cover one, 13 cover two, 14 water tank, 141 water spray mechanism, 142 support base, and 143 water outlet; The dewatering unit includes: 21 outer screen, 22 inner screen, 23 toothed ring, 24 drive mechanism, 25 support ring, 26 roller seat, 27 roller assembly, 271 roller, 272 roller base, 2721 base body, 2722 fixed slider, 2723 inner groove, 2724 side wing plate, 2725 rib plate, 2726 bottom plate, 2727 slider protrusion, 273 roller shaft pressure plate, 274 fixing bolt, and 28 circular track; The crossbeam assembly includes: 31 left crossbeam, 32 right crossbeam, 33 receiving hopper, and 34 slag and water distributor. Detailed Implementation

[0022] The present invention will be further described in detail below with reference to the accompanying drawings.

[0023] See appendix Figure 1-9The blast furnace slag processing device disclosed in this invention is an innovative improvement based on existing processing equipment. The dewatering unit 2 is driven to rotate by a dual-drive mechanism 24 located at its centerline. The granulated slag from the stamping box is evenly distributed by a slag-water distributor to the screen hoppers within the dewatering unit for slag-water separation. When the screen hoppers rotate to the top, the finished slag falls into the receiving hopper and is then discharged onto the external conveyor belt. The use of a dual-drive mechanism 24 to rotate the dewatering unit eliminates the horizontal force generated during operation by a single-drive mechanism, reduces circumferential force, and increases the service life of the idler rollers. Furthermore, the idler roller assembly 27 supporting the dewatering unit 2 employs a quick-change structure, shortening the replacement time of spare rollers and improving production efficiency.

[0024] This improved blast furnace slag treatment device includes an upper shell 1, a dewatering unit 2, and a crossbeam assembly 3. For example... Figure 1 As shown, the upper shell 1 includes a round top and a square bottom 11, with a first cover 12 and a second cover 13 below the round top and square bottom 11. The first cover 12 and the second cover 13 have similar structures and are symmetrically arranged. A water tank 14 is located below the first cover 12 and the second cover 13. The water tank 14 is semi-circular, hollow inside, and open at its circular diameter. A water spray mechanism 141 is located on one side of the water tank 14, which can perform rinsing and blowing operations. Four support seats 142 are respectively provided on the arc surface of the semi-circular arc of the water tank 14, and a water outlet 143 is located on the side of the water tank 14 away from the water spray mechanism 141. Figure 2 As shown, the upper shell 1 is equipped with a dewatering device 2, which has a cylindrical structure and a crossbeam assembly 3 inside. The dewatering device 2 includes an outer screen 21 and an inner screen 22. The outer screen 21 is composed of woven screens pieced together, and the inner screen 22 is a trapezoidal strip screen that is inclined at a certain angle. The outer screen 21 and the inner screen 22 can filter out water-containing sludge.

[0025] The dewatering device 2 has a toothed ring 23 and a support ring 25 on the outer periphery of both ends in the axial direction. Two sets of drive mechanisms 24 are symmetrically arranged on the left and right sides along the center of the toothed ring 23. The output end of the drive mechanism 24 is connected to the toothed ring 23 for transmission. The bottom of the support ring 25 and the toothed ring 23 are equipped with roller assemblies 27 that roll with them.

[0026] like Figure 2-3As shown, a gear ring 23 is provided on one side of the dewatering unit 2, and the gear ring 23 is exposed outside the upper housing 1. The gear ring 23 is connected to a dual drive mechanism 24, which is driven to rotate by a pinion, a motor, a hydraulic coupler, and a reducer. A support ring 25 is provided on the side of the dewatering unit 2 away from the gear ring 23, and the support ring 25 is exposed outside the upper housing 1. Both the gear ring 23 and the support ring 25 have annular tracks 28, which are fitted inside the gear ring 23 or the support ring 25 and rotate synchronously with it. The annular tracks 28 are supported on the roller assembly 27 and rotate drivenly on the roller assembly 27. The roller assembly is mounted on the roller seat 26. The load of the entire dewatering unit acts on the rollers, is then transmitted from the rollers to the roller seat, and finally from the roller seat to the equipment foundation.

[0027] like Figure 1-2 As shown, a crossbeam assembly 3 is located at the axis of the dewatering unit 2. The crossbeam assembly 3 includes a left crossbeam 31, and a right crossbeam 32 is located symmetrically on one side of the left crossbeam 31. The left and right crossbeams 31 and 32 serve as supports, used to fix the equipment to the platform and support the slag treatment equipment. A slag-water distributor 34 is located between the left and right crossbeams 31 and 32, and the slag-water distributor 34 includes an inlet for metallurgical slag. A receiving hopper 33 is located above the slag-water distributor 34.

[0028] As a preferred technical solution: two sets of drive mechanisms 24 are respectively located on both sides of the gear ring 23. The gears at the output end of the drive mechanism 24 mesh with the teeth on both sides of the gear ring and are synchronously transmitted. The dewatering unit adopts a dual-drive transmission method, which consists of: a motor, a hydraulic coupler, a reducer, a pinion, and connecting parts. The advantages of setting up a dual-drive mechanism are: (1) The use of dual drive transmission eliminates horizontal force and reduces circumferential force. The dehydrator is not affected by horizontal force and will not deviate from its side. (2) Adopt Figure 3 The 24-speed dual-drive transmission system reaches its maximum speed at startup. Figure 4 The load applied to the motor shaft at point 1 is gradually increased from zero, making the motor similar to a no-load start. M(Φ) is a parabola passing through the origin, which is called a soft start. (3) Adopt Figure 3 In the dual-drive transmission mode of the GD24, after reaching state 1, the turbine shaft drives the dehydrator to start. At this time, the acceleration torque M(Φ)-MH of the turbine shaft gradually increases from zero instead of giving the dehydrator a torque instantly. Therefore, the start is relatively smooth. This is of great significance for the larger dehydrator of GD2. Since the power coefficient is reduced during the start-up, it brings great benefits to the strength and vibration of the dehydrator. (4) If the dehydrator is severely overloaded beyond point M(Φ)4 during operation, the oil temperature will rise, the fusible plug on the hydraulic coupling will open automatically, the oil will spray out, the operation will stop, and the whole system will be protected from overload. (5) From Figure 3 As can be seen from page 24, in order to ensure the smooth operation of the blast furnace slag treatment system, the dewatering unit is equipped with two identical transmission devices. When one device fails, the other device can still ensure the production of the blast furnace slag treatment system, thus doubling the safety factor.

[0029] As a preferred technical solution, the number of idler roller assemblies 27 is four sets. The four sets of idler roller assemblies 27 are symmetrically arranged along the axial and radial directions of the dewatering unit 2, and the distance between the axial idler roller assemblies 27 is greater than the distance between the radial idler roller assemblies 27. The idler roller assembly 27 includes an idler roller 271, an idler roller base 272, and an idler roller shaft pressure plate 273. The idler roller base 272 includes a base body 2721 and a fixed slider 2722; the base body 2721 includes a rib plate 2725 and a side wing plate 2724, and the upper part of the side wing plate has a quarter-circle arc structure; the fixed slider 2722 is an inverted "T" shape, and its front part has a quarter-circle arc structure; the side wing plate and the fixed slider plate are spliced ​​together to form a semi-circular groove for placing the idler roller shaft. With this structural design, when replacing idler rollers, it's not necessary to raise the dewatering unit above the idler roller shaft pressure plate 273 (the height raised above the idler roller shaft pressure plate should be greater than 165 mm). This quick-change idler roller structure only requires raising the dewatering unit 2 by about 10 mm to ensure that the idler roller does not contact the track. Then, attach... Figure 6 Remove the fixing bolts 274 connecting the base body 2721 and the fixed slider 2722, remove the fixed slider 2722, and the roller can be taken out horizontally from the outside. This saves replacement time and makes replacement more convenient, shortens the time for replacing spare parts later, and improves work efficiency.

[0030] As a preferred embodiment: see appendix Figure 6 The idler roller base 272 includes a rectangular base plate 2726, two stiffening plates 2725 perpendicular to the base plate 2726 along its four edges, and two side wing plates 2724. The two side wing plates 2724 are symmetrically arranged along the central horizontal axis of the base plate, and the two stiffening plates 2725 are symmetrically arranged along the central longitudinal axis of the base plate. The height of the side wing plates is greater than the height of the stiffening plates. An inwardly facing boss is provided on the inner surface of the upper part of the side wing plates, and the thickness of the upper part of the side wing plates is twice the thickness of the other parts of the side wing plates. An inner groove 2723 is provided in the central part of the upper part of the side wing plates 2724. The bottom of the arc-shaped part in front of the fixed slider 2722 has a slider protrusion 2727. The size of the inner groove 2723 matches the slider protrusion 2727. The base body 2721 and the fixed slider 2722 are assembled and fixedly connected by fixing bolts 274. The idler roller shaft pressure plate 273 is placed on top of the base body 2721 and the fixed slider 2722 and is fixedly connected by mounting bolts.

[0031] As another preferred embodiment: Figure 7In the middle, the rear side of the slider protrusion 2727 and the rear side of the inner groove 2723 are corresponding inclined structures. This structure plays a guiding and limiting role, which helps to fix the slider to fall accurately into the inner groove.

[0032] The working principle of this invention is as follows: The dual-drive transmission method eliminates horizontal forces and reduces circumferential forces. Since the dewatering unit is not affected by horizontal forces, it naturally will not deviate from its designated path. The support roller assembly adopts a quick-change structure, shortening replacement time and improving production efficiency.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. An improved blast furnace slag treatment device, comprising an upper shell (1), wherein a dewatering device (2) is provided inside the upper shell (1), the dewatering device (2) having a cylindrical structure, and a crossbeam assembly (3) is provided inside the dewatering device (2), characterized in that... The dehydrator (2) has a toothed ring (23) and a support ring (25) on the outer periphery of its two ends in the axial direction. Two sets of drive mechanisms (24) are symmetrically arranged along the center of the toothed ring (23). The output end of the drive mechanism (24) is connected to the toothed ring (23) for transmission. The bottom of the support ring (25) and the toothed ring (23) are equipped with roller assemblies (27) that roll with them. The idler assembly (27) includes an idler (271), an idler base (272), and an idler shaft pressure plate (273); The idler roller base (272) includes a base body (2721) and a fixed slider (2722); the base body (2721) includes a stiffening plate (2725) and a side wing plate (2724); The top of the side wing plate is a quarter-circle arc structure; the fixed slider (2722) is an inverted "T" shape with a quarter-circle arc structure in front; the side wing plate and the fixed slider are spliced ​​together to form a semi-circular groove for placing the roller shaft. The side wing plate (2724) has an inner groove (2723) in the center of its upper part; the bottom of the arc-shaped part in front of the fixed slider (2722) has a slider protrusion (2727); the size of the inner groove (2723) matches the slider protrusion (2727); The rear side of the slider protrusion (2727) and the rear side of the inner groove (2723) are mutually corresponding inclined structures; The roller shaft pressure plate (273) is placed on top of the base body (2721) and the fixed slider (2722) and is fixedly connected by mounting bolts.

2. The improved blast furnace slag treatment device according to claim 1, characterized in that, The two sets of drive mechanisms (24) are respectively located on both sides of the gear ring (23). The gear at the output end of the drive mechanism (24) meshes with the teeth on both sides of the gear ring and is synchronously transmitted.

3. The improved blast furnace slag treatment device according to claim 1, characterized in that, The number of roller assemblies (27) is four. The four roller assemblies (27) are symmetrically arranged along the axial and radial directions of the dewatering unit (2), and the distance between the axial roller assemblies (27) is greater than the distance between the radial roller assemblies (27).

4. The improved blast furnace slag treatment device according to claim 1, characterized in that, The idler roller base (272) includes a rectangular base plate (2726), two stiffening plates (2725) perpendicular to the base plate along the four edges of the base plate (2726), and two side wing plates (2724); the two side wing plates (2724) are symmetrically arranged along the central horizontal axis of the base plate, and the two stiffening plates (2725) are symmetrically arranged along the central longitudinal axis of the base plate.

5. The improved blast furnace slag treatment device according to claim 4, characterized in that, The height of the side wing plate is greater than the height of the stiffener plate; an inwardly facing boss is provided on the inner side of the upper part of the side wing plate, and the thickness of the upper part of the side wing plate is twice the thickness of the other parts of the side wing plate.

6. The improved blast furnace slag treatment device according to claim 1, characterized in that, The base body (2721) and the fixed slider (2722) are assembled and then fixedly connected by fixing bolts (274).

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