A conveying device for reducing the amount of sinter return fines

Abstract

The utility model relates to a conveying device for reducing sintered return ore quantity, which comprises a sintering belt conveyor and a buffer device installed on the sintering belt conveyor. The sintering belt conveyor comprises a rack and a plurality of carrier roller frames fixedly installed on the rack. The carrier roller frames are installed with carrier rollers. The process belt is located on the carrier rollers. The rack comprises left and right lateral rods arranged symmetrically. A plurality of carrier roller frames are arranged on the rack at intervals. The buffer device is arranged at the feeding end of the sintering belt conveyor. The buffer device comprises a buffer bed and a mounting mechanism for connecting the buffer bed with the rack. The buffer bed comprises a bed frame. A horizontal plate is fixedly installed on the bed frame. An inclined plate is hingedly connected to each of the left and right sides of the horizontal plate. A plurality of buffer strips are fixedly installed on the horizontal plate and the inclined plate. The buffer device is arranged at the feeding end of the sintering belt conveyor and directly below the discharge port of the chute. The buffer device is used for supporting the process belt. When the sintered ore directly hits the feeding end belt, the buffer device plays a buffering role, reduces the damage to the belt and reduces the return ore quantity.

Description

Technical Field

[0001] This utility model relates to a technology for reducing the amount of sintered ore less than 5mm that cannot be used in blast furnaces, specifically to a conveying device for reducing the amount of sintered ore returned. Background Technology

[0002] This solution is applied between the blast furnace and sintering. The sintered ore is transported to the blast furnace via a sintering belt conveyor. The sintered ore used in the blast furnace needs to be larger than 5mm, while ore smaller than 5mm cannot enter the blast furnace and needs to be returned to the sintering workshop for re-sintering into blocks before being transported to the blast furnace.

[0003] Because of the distance between the sintering workshop and the blast furnace workshop, and the relatively fixed spatial positions of each workshop, sintered ore needs to be transported to the blast furnace workshop via multiple sintering conveyor belts and multiple transfer stations (chutes). During the transportation process, when the sintered ore passes through a transfer station, that is, when it turns from the Nth sintering conveyor belt 20 to the N+1th sintering conveyor belt 21, due to the height difference between the two adjacent sintering conveyor belts (the height difference is formed between the discharge end 23 of the Nth sintering conveyor belt and the feed end 24 of the N+1th sintering conveyor belt through a chute 22, which can be referenced),... Figure 6 , 7 If the conveying direction of the Nth sintering belt conveyor is left-right and the conveying direction of the N+1th sintering belt conveyor is front-back, the sintering ore will be impacted, resulting in sintering ore fragments smaller than 5mm. Furthermore, the existing chute has a figure-eight shaped straight downward structure, causing the sintering ore to fall directly onto the lower sintering ore feed belt during the transfer station process, impacting the sintering ore to produce fragments smaller than 5mm and damaging the conveyor belt.

[0004] To reduce the size of sintered ore (less than 5mm) during transfer between the blast furnace and sintering plant, a buffer device was added to the feed end of the sintering belt conveyor to improve the conveying system and reduce the amount of sintered ore returned. Summary of the Invention

[0005] This utility model provides a conveying device for reducing the amount of sintered ore returned. The buffer device is set at the feed end of the sintering belt conveyor and is located directly below the discharge port of the chute. It is used to support the conveyor belt during the process, so as to buffer the damage to the belt and reduce the amount of ore returned when the sintered ore directly hits the feed end belt.

[0006] The technical solution adopted by this utility model is: a conveying device for reducing the amount of sintered return ore, including a sintering belt conveyor and a buffer device installed on the sintering belt conveyor. The sintering belt conveyor includes a frame and a roller frame fixedly installed on the frame. Rollers are installed on the roller frame, and the progress belt is located on the roller. The frame includes a left crossbar and a right crossbar symmetrically arranged. Several roller frames are arranged at intervals along the length of the frame. The buffer device is located at the feed end of the sintering belt conveyor and is used to support the progress belt.

[0007] Based on the above scheme, as a preferred embodiment, the buffer device includes a buffer bed and an installation mechanism for connecting the buffer bed to the frame. The buffer bed includes a bed frame with a horizontal plate fixed on it. An inclined plate is hinged to each of the left and right sides of the horizontal plate, and the two inclined plates and the horizontal plate form a V-shape (flat bottom). Several buffer strips are fixedly installed on both the horizontal plate and the inclined plates, and the length direction of the buffer strips is the front-to-back direction.

[0008] Based on the above scheme, as a preferred embodiment, the horizontal plate and the inclined plate have T-shaped blocks with the length direction being front-to-back, and the buffer strip has T-shaped grooves.

[0009] Based on the above scheme, as a preferred option, the front end of the T-block has a retaining edge, the rear end of the T-slot is not continuous, and the retaining edge and its corresponding buffer strip, as well as the rear end of the T-slot and its corresponding buffer strip, have threaded holes. During installation, the front end of the T-slot of the buffer strip is aligned with the rear end of the T-block, and the buffer strip is pushed forward until the front end fits against the retaining edge. The locking bolt passes through the corresponding threaded hole to fix the baffle and the buffer strip, as well as the rear end of the T-slot and the buffer strip.

[0010] Based on the above scheme, as a preferred option, the inclined plate and the adjusting rod are hinged together. The upper end of the adjusting rod is hinged to the inclined plate through a Y-type joint, the Y-type joint is fixed on the inclined plate, and the lower end of the adjusting rod is fixed on the bed frame.

[0011] Based on the above scheme, as a preferred option, the bed frame is installed on the left and right crossbars through a height adjustment mechanism.

[0012] Based on the above scheme, as a preferred option, the height adjustment mechanism includes a base plate with both ends fixedly installed on the left and right crossbars respectively, and two rows of guide mechanisms are fixedly installed on the base plate.

[0013] Based on the above scheme, as a preferred option, the guiding mechanism includes a sleeve fixed to the base plate and a slide rod that can move up and down inside the sleeve. The upper end of the slide rod is fixedly connected to the lower end face of the bed frame, and a hydraulic cylinder is fixedly installed at the center of the base plate. The upper end of the telescopic rod of the hydraulic cylinder is fixedly connected to the bed frame.

[0014] The present invention has the following technical advantages: The buffer device is installed at the feed end of the sintering belt conveyor, directly below the discharge port of the chute. It is used to support the conveyor belt and thus buffer the damage to the belt and reduce the amount of returned ore when it directly hits the feed end belt.

[0015] The buffer strip is designed with T-slots to fit into T-blocks on horizontal and inclined plates, and its two ends are fixed with bolts. It can be quickly installed and replaced.

[0016] The adjusting rod uses a Y-type joint to hinge the inclined plate. The Y-type joint is fixed on the inclined plate to avoid interference caused by the rotation of the inclined plate. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram showing the interaction between the buffer strip and the T-block at the front end; Figure 3 This is a schematic diagram of the interaction between the buffer strip and the T-block at the rear end; Figure 4 This is a side view of the buffer bar; Figure 5 This is a side view of the T-shaped block; Figure 6 This is a schematic diagram showing the coordination between the Nth sintering belt conveyor and the (N+1)th sintering belt conveyor. Figure 7 yes Figure 6 The unfolded diagram of the N+1th sintering belt conveyor (used to show that its feed end is located directly below the discharge end of the Nth sintering belt conveyor). Detailed Implementation

[0018] To further understand this utility model, the following detailed description is provided in conjunction with embodiments. However, this is not intended to limit the scope of the utility model. It should be understood that these descriptions are only for further illustrating the features and advantages of the utility model, and not for limiting the scope of the claims. Any equivalent substitutions made in the art based on the disclosure of this utility model are within the protection scope of this utility model.

[0019] like Figure 1-5 As shown in Embodiment 1, a conveying device for reducing the amount of sintered return ore includes a sintering belt conveyor and a buffer device installed on the sintering belt conveyor. The sintering belt conveyor includes a frame and a roller frame fixedly installed on the frame. Rollers are installed on the roller frame, and the progress belt is located on the rollers.

[0020] The frame includes a left horizontal bar 1 and a right horizontal bar 2 arranged symmetrically, and several roller frames are arranged at intervals along the length of the frame.

[0021] The buffer device is installed at the feed end of the sintering belt conveyor, directly below the discharge port of the chute, to support the conveyor belt.

[0022] The buffer device includes a buffer bed and an installation mechanism for connecting the buffer bed to the frame. The buffer bed includes a bed frame 3, on which a horizontal plate 4 is fixed. An inclined plate 5 is hinged to each of the left and right sides of the horizontal plate. The two inclined plates and the horizontal plate form a V-shape (flat bottom). Several buffer strips 6 are fixedly installed on the horizontal plate and the inclined plates. The length direction of the buffer strips is the front-to-back direction.

[0023] The horizontal plate and the inclined plate have T-shaped blocks 7 with the length direction in the front-to-back direction. The front end of the T-shaped block has a retaining edge 15, and the buffer strip has a T-shaped groove 19. The rear end of the T-shaped groove is not continuous. The retaining edge and the corresponding buffer strip, as well as the rear end of the T-shaped groove and the corresponding buffer strip, have threaded holes. During installation, the front end of the T-shaped groove of the buffer strip is aligned with the rear end of the T-shaped block. The buffer strip is pushed forward until the front end fits against the retaining edge. The locking bolt 16 passes through the corresponding threaded hole to fix the retaining edge and the buffer strip, as well as the rear end of the T-shaped groove and the buffer strip.

[0024] The buffer strip is designed with T-slots to fit into T-blocks on horizontal and inclined plates, and its two ends are fixed with bolts. It can be quickly installed and replaced.

[0025] The buffer strip has a notch 18 at its front end. The depth of the notch in the length direction is consistent with the thickness and size of the edge, so that the end can be kept flat after installation.

[0026] In Example 2, since the particle size of the ore fed from the sintering workshop to the blast furnace workshop cannot be directly controlled, the total amount of ore larger than 5mm is uncertain. When the amount is large, it is necessary to increase the angle between the inclined plate and the horizontal plate to increase the depth between the upper part of the inclined plate and the horizontal plate, thereby increasing the depth and preventing ore from scattering. At the same time, the height of the buffer bed is increased to relieve pressure. The opposite is true for small amounts. Regarding this problem, existing patent 201910921082.6 discloses an adjusting rod to adjust the angle between the inclined plate and the horizontal plate and a hydraulic cylinder to adjust the height of the bed frame. However, the adjusting rod in this patent can only be manually adjusted up and down, and it does not disclose how to address the change in the position of the upper end of the adjusting rod relative to the inclined plate after adjustment.

[0027] Based on this, the inclined plate and the adjusting rod 8 are hinged together. Specifically, the upper end of the adjusting rod is hinged to the inclined plate through a Y-type connector, the Y-type connector 9 is fixed on the inclined plate, and the lower end of the adjusting rod is fixed on the bed frame.

[0028] The adjusting rod can be the adjusting rod in patent 201910921082.6, or it can be replaced by a cylinder or a hydraulic cylinder.

[0029] The bed frame is mounted on the left and right crossbars via a height adjustment mechanism. The height adjustment mechanism includes a base plate 10 with its two ends fixedly mounted on the left and right crossbars, respectively. Two rows of guide mechanisms are fixedly mounted on the base plate. The guide mechanisms include a sleeve 11 fixed on the base plate and a slide rod 12 that can move up and down within the sleeve. The upper end of the slide rod is fixedly connected to the lower end face of the bed frame. A hydraulic cylinder 17 is installed at the center of the base plate. The upper end of the telescopic rod of the hydraulic cylinder is fixedly connected to the bed frame.

[0030] In Example 3, welding the base plate to the frame is not recommended, as it would make replacing the buffer strip inconvenient, requiring the removal of the belt or cutting off the base plate. Bolt-type fastening is also unsuitable, as even a slight deviation can prevent installation. Therefore, a strip-shaped connector 13 (a long strip-shaped plate) is fixedly installed on each side of the base plate. The strip-shaped connector has a trapezoidal groove 14. During installation, the trapezoidal groove engages with the left and right crossbars. Since the entire buffer bed assembly is machined as a single unit before being installed on the left and right crossbars, and these products are typically manufactured using conventional methods with relatively low precision, the trapezoidal groove can still meet assembly requirements within a certain precision tolerance range.

[0031] During use, the height of the buffer bed is adjusted on-site by the operators based on the amount of ore returned from the blast furnace workshop.

[0032] The preferred embodiments of this utility model have been described in detail above. However, it should be understood that the above description is for illustrative purposes only and does not constitute any limitation on the scope of this utility model. Those skilled in the art can make substitutions or changes to certain features of this utility model without departing from the spirit and scope of this utility model, and such substitutions or changes should be considered to fall within the protection scope of the claims of this utility model.

Claims

1. A conveying device for reducing the amount of sintered ore returned, comprising a sintering belt conveyor and a buffer device installed on the sintering belt conveyor, the sintering belt conveyor comprising a frame and idler frames fixedly installed on the frame, idler frames being mounted on idler frames, a conveyor belt being located on the idler rollers, the frame comprising symmetrically arranged left and right crossbars, and a plurality of idler frames being spaced apart along the length of the frame, characterized in that, The buffer device is installed at the feed end of the sintering belt conveyor to support the conveyor belt. The buffer device includes a buffer bed and an installation mechanism for connecting the buffer bed to the frame. The buffer bed includes a bed frame with a horizontal plate fixed on it. An inclined plate is hinged to each side of the horizontal plate. The two inclined plates and the horizontal plate form a V-shape. Several buffer strips are fixedly installed on the horizontal plate and the inclined plates. The length direction of the buffer strips is the front-to-back direction.

2. The conveying device for sintered return ore as described in claim 1, characterized in that, The horizontal and inclined plates have T-shaped blocks with their length direction being front-to-back, and the buffer strips have T-shaped grooves.

3. The conveying device for sintered return ore as described in claim 1, characterized in that, The front end of the T-block has a retaining edge, and the rear end of the T-slot is not continuous. The retaining edge and its corresponding buffer strip, as well as the rear end of the T-slot and its corresponding buffer strip, have threaded holes. During installation, the front end of the T-slot of the buffer strip is aligned with the rear end of the T-block. The buffer strip is pushed forward until the front end fits against the retaining edge. The locking bolt passes through the corresponding threaded hole to fix the baffle and the buffer strip, as well as the rear end of the T-slot and the buffer strip.

4. The conveying device for sintered return ore as described in claim 1, characterized in that, The tilting plate and the adjusting rod are hinged together. The upper end of the adjusting rod is hinged to the tilting plate through a Y-type joint, which is fixed to the tilting plate. The lower end of the adjusting rod is fixed to the bed frame.

5. The conveying device for sintered return ore as described in claim 1, characterized in that, The bed frame is installed on the left and right crossbars via a height adjustment mechanism.

6. The conveying device for sintered return ore as described in claim 5, characterized in that, The height adjustment mechanism includes a base plate fixedly installed on the left and right crossbars at both ends. Two rows of guide mechanisms are fixedly installed on the base plate. The guide mechanism includes a sleeve fixed on the base plate and a slide rod that can move up and down inside the sleeve. The upper end of the slide rod is fixedly connected to the lower end face of the bed frame. A hydraulic cylinder is fixedly installed at the center of the base plate. The upper end of the telescopic rod of the hydraulic cylinder is fixedly connected to the bed frame.

Images