Installation method of rotary hearth furnace steel silo deblocking machine

Abstract

This invention relates to an installation method for a rotary hearth furnace feed hopper rotary cleaning machine, comprising the following steps: preparing an adjusting section; installing the steel hopper and belt conveyor; installing the adjusting section; installing the rotary cleaning machine; and fixing the rotary cleaning machine. This invention innovates the installation and fixing method of the rotary cleaning machine. Utilizing the designed adjusting section, it effectively improves the docking efficiency between the rotary cleaning machine and the steel hopper. The machine is securely fixed to the steel hopper using turnbuckles, ensuring safety and reliability. This invention solves the technical difficulties of installing and fixing the rotary cleaning machine under limited construction space conditions, improving construction efficiency and ensuring construction quality.

Description

Technical Field

[0001] This invention belongs to the field of metallurgical equipment construction technology, and in particular relates to an installation method for a rotary hearth furnace steel silo deblocking machine. Background Technology

[0002] Rotary hearth furnace processing technology is currently the most advanced metallurgical dust and sludge treatment technology in the world. It involves forming metal dust and sludge into pellets, drying them, and then feeding them into a rotary hearth furnace. Under high temperature conditions (above 1200°C) inside the furnace, the pellets are reduced into metallized pellets. The reduction temperature in each section of the rotary hearth furnace must be kept stable.

[0003] During material conveying in a rotary hearth furnace, blockages easily occur in areas such as the steel silo due to the inherent properties of raw materials, green pellets, and finished pellets. Timely clearing of these blockages is essential to ensure normal production line operation. Installing a rotary unblocking machine below the steel silo effectively clears blockages by rotating related components at the blockage site. However, the limited space between the steel silo and the lower conveyor belt restricts the installation space for the rotary unblocking machine. The adjustment cycle for connecting the steel silo and the machine is lengthy, and the machine's complex structure makes designing an effective fixing method a significant technical challenge. Therefore, developing an installation method for a rotary unblocking machine in a rotary hearth furnace steel silo to solve the technical difficulties of installation and effective fixing under limited construction space is crucial for ensuring safe installation and improving construction efficiency. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide an installation method for a rotary hearth furnace steel silo rotary unblocking machine, which solves the technical difficulties of installation and effective fixation of the rotary unblocking machine under the condition of limited construction space, and ensures the safety of the rotary unblocking machine installation and improves construction efficiency.

[0005] The technical solution adopted by this invention to solve its technical problem is: to provide an installation method for a rotary hearth furnace batching bin rotary cleaning machine, comprising the following steps:

[0006] S1. Prepare the adjusting section. Prepare the adjusting section according to the outer diameter of the straight pipe section at the bottom of the steel silo. The adjusting section is generally annular, including two symmetrical semi-circular rings. The inner diameter of the annular ring matches the outer diameter of the straight pipe section at the bottom of the steel silo. The lower surface of the adjusting section is evenly distributed with a number of fixing bolt holes. Matching fixing bolts are pre-installed in the fixing bolt holes. The two semi-circular rings are fixedly connected by two sets of locking bolts located on the outer side. Then, drill the unblocking machine bolt holes at the upper steel beam of the rotary unblocking machine corresponding to the positions of the fixing bolt holes.

[0007] S2. Steel silo and pulley installation: Install the steel silo into the concrete frame structure of the plant. Then, install the belt conveyor below the straight pipe section at the bottom of the steel silo, and then install the slide gate valve above the belt conveyor.

[0008] S3. Install the adjusting section. Fix a set of locking bolts to the adjusting section prepared in S1 in advance, and then fix it to the outside of the straight pipe section at the bottom of the steel silo through temporary fixing measures, so that the lower part of the adjusting section is higher than the lower edge of the straight pipe section at the bottom of the steel silo.

[0009] S4. Installation of the rotary unblocking machine: Use the lifting equipment in the plant to hoist the rotary unblocking machine to the bottom of the steel silo. Slowly lift the rotary unblocking machine. When the distance between the upper part of the rotary unblocking machine and the lower straight pipe section of the steel silo is 70-80mm, stop lifting the rotary unblocking machine. Then adjust the orientation, levelness, and centerness of the rotary unblocking machine so that the center line of the rotary unblocking machine matches the center line of the upper steel silo and the slide valve of the lower belt conveyor.

[0010] S5. Fix the rotary unblocking machine. Loosen the temporary fixing measures so that the lower edge of the adjusting section is lowered to the upper opening of the rotary unblocking machine. Rotate the adjusting section to align the fixing bolt holes with the unblocking machine bolt holes. Then tighten another set of locking bolts and lock the pre-installed fixing bolts with nuts. Finally, adjust the outlet flange of the rotary unblocking machine and weld it to the slide valve.

[0011] Furthermore, in S1, the adjusting section is made of 8-12mm steel plate.

[0012] Furthermore, in S1, the bottom of the adjusting section has a total of 24 sets of bolt holes evenly distributed at 15° intervals, and the outer sides of both ends of the semi-circular ring are provided with locking bolt holes in groups of 3, and the two sets of locking bolt holes opposite each other are fixedly connected by locking bolts.

[0013] Furthermore, in S2, the installation of the steel silo is as follows: when the concrete frame structure of the factory building is constructed to the fixed layer of the steel silo, the steel silo is hoisted into place outside the factory building using lifting machinery.

[0014] On the other hand, in S2, the installation of the steel silo is as follows: after the concrete frame structure of the factory building is capped, the steel silo is pushed to the bottom of the installation device by means of a sliding track and a hydraulic lifting device, and then the steel silo is lifted into place by means of a hoisting device set up in the concrete frame structure.

[0015] Furthermore, in step S5, after the adjusting section is fixed, the fixing lugs of the steel silo and the fixing lugs of the rotating unblocking machine steel beam are connected and fixed by at least four turnbuckles.

[0016] Beneficial effects

[0017] This invention innovates the installation and fixing method of the rotary unblocking machine. By utilizing the designed adjustment joint, the docking efficiency between the rotary unblocking machine and the steel silo is effectively improved. The machine is fixed to the steel silo with turnbuckles, which is safe and reliable. This invention solves the technical problem of installation and fixing of the rotary unblocking machine under the condition of limited construction space, improves construction efficiency, and ensures construction quality. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the installation of a rotary hearth furnace steel silo unblocking machine.

[0019] Figure 2 for Figure 1 Sectional view of AA.

[0020] Figure 3 for Figure 2 A magnified view of a portion of the image.

[0021] Among them, 1-steel silo; 101-fixed lug; 2-adjusting section; 201-fixed bolt hole; 202-locking bolt hole; 3-rotary unblocking machine; 301-fixed lifting lug; 4-turn bolt; 5-belt conveyor; 501-slide valve.

[0022] The same markings in each diagram represent the same component. Detailed Implementation

[0023] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the invention, and these equivalent forms also fall within the scope defined by the appended claims.

[0024] This invention provides an installation method for a rotary hearth furnace feed hopper rotary cleaning machine, comprising the following steps:

[0025] S1. Prepare the adjusting section. Prepare adjusting section 2 according to the outer diameter of the straight pipe section at the bottom of steel silo 1, such as... Figure 1 , 2 As shown in Figure 3, the adjusting section 2 is annular in shape, comprising two symmetrical semicircular rings. The inner diameter of the annular ring matches the outer diameter of the straight pipe section at the bottom of the steel silo 1. The lower surface of the adjusting section 2 is evenly distributed with a plurality of fixing bolt holes 201. Matching fixing bolts are pre-installed in the fixing bolt holes 201. The two semicircular rings are fixedly connected by two sets of locking bolts located on the outer side. Subsequently, the unblocking machine bolt holes are drilled at the upper steel beam of the rotary unblocking machine 3 at the positions corresponding to the fixing bolt holes 201.

[0026] S2. Steel silo and pulley installation: Install steel silo 1 into the concrete frame structure of the plant. Then, install belt conveyor 5 below the straight pipe section at the bottom of steel silo 1. Then, install slide valve 501 above belt conveyor 5.

[0027] S3. Install the adjusting section. Fix a set of locking bolts to the adjusting section 2 prepared in S1 in advance, and then fix it to the outside of the bottom straight pipe section of the steel silo 1 through temporary fixing measures, so that the lower part of the adjusting section 2 is higher than the lower edge of the bottom straight pipe section of the steel silo 1.

[0028] S4. Installation of the rotary unblocking machine: Use the lifting equipment in the plant to hoist the rotary unblocking machine 3 to the bottom of the steel silo 1. Slowly lift the rotary unblocking machine 3. When the distance between the upper opening of the rotary unblocking machine 3 and the lower straight pipe section of the steel silo 1 is 70-80mm, stop lifting the rotary unblocking machine 3. Then adjust the orientation, levelness and centerness of the rotary unblocking machine 3 so that the center line of the rotary unblocking machine 3 matches the center line of the upper steel silo 1 and the slide valve 501 of the lower belt conveyor 5.

[0029] S5. Fix the rotary unblocking machine. Loosen the temporary fixing measures so that the lower edge of the adjusting section 2 is lowered to the upper opening of the rotary unblocking machine 3. Rotate the adjusting section 2 so that the fixing bolt hole 201 is aligned with the bolt hole of the unblocking machine. Then tighten another set of locking bolts and tighten the pre-installed fixing bolts with nuts. Finally, adjust the outlet flange of the rotary unblocking machine 3 and weld it to the slide valve 501.

[0030] In S1, the adjusting section 2 is made of 8-12mm steel plate.

[0031] In S1, the bottom of the adjusting section 2 has a total of 24 sets of bolt holes evenly distributed at 15° intervals. Each side of the semi-circular ring is provided with a set of 3 locking bolts. The outer sides of both ends of the semi-circular ring are provided with a set of 3 locking bolt holes 202. The two sets of locking bolt holes 202 opposite to each other are fixedly connected by locking bolts.

[0032] In step S2, the installation of the steel silo 1 is as follows: when the concrete frame structure of the factory building is constructed to the fixed layer of the steel silo 1, the steel silo 1 is hoisted into place outside the factory building using lifting machinery.

[0033] In another embodiment, in step S2, the steel silo 1 is installed as follows: after the concrete frame structure of the factory building is capped, the steel silo 1 is pushed to the bottom of the installation device by means of a sliding track and a hydraulic lifting device, and then the steel silo 1 is lifted into place by means of a hoisting device set up in the concrete frame structure.

[0034] In S3, the temporary fixing measure is a hook that is temporarily fixed to the fixing lug 101 of the steel silo 1 and detachably connected to the adjusting section 2. In other embodiments, it can also be other detachable hanging or lifting devices.

[0035] In step S5, after the adjusting section is fixed, the fixing lug 101 of the steel silo 1 and the fixing lug 301 of the steel beam of the rotary unblocking machine 3 are connected and fixed by at least four turnbuckles 4.

Claims

1. A method for installing a rotary hearth furnace batching hopper rotary cleaning machine, characterized in that, Includes the following steps: S1. Prepare the adjusting section. Prepare the adjusting section according to the outer diameter of the straight pipe section at the bottom of the steel silo. The adjusting section is generally annular, including two symmetrical semi-circular rings. The inner diameter of the annular ring matches the outer diameter of the straight pipe section at the bottom of the steel silo. The lower surface of the adjusting section is evenly distributed with a number of fixing bolt holes. Matching fixing bolts are pre-installed in the fixing bolt holes. The two semi-circular rings are fixedly connected by two sets of locking bolts located on the outer side. Then, drill the unblocking machine bolt holes at the upper steel beam of the rotary unblocking machine corresponding to the positions of the fixing bolt holes. S2. Steel silo and pulley installation: Install the steel silo into the concrete frame structure of the plant. Then, install the belt conveyor below the straight pipe section at the bottom of the steel silo, and then install the slide gate valve above the belt conveyor. S3. Install the adjusting section. Fix a set of locking bolts to the adjusting section prepared in S1 in advance, and then fix it to the outside of the straight pipe section at the bottom of the steel silo through temporary fixing measures, so that the lower part of the adjusting section is higher than the lower edge of the straight pipe section at the bottom of the steel silo. S4. Installation of the rotary unblocking machine: Use the lifting equipment in the plant to hoist the rotary unblocking machine to the bottom of the steel silo. Slowly lift the rotary unblocking machine. When the distance between the upper part of the rotary unblocking machine and the lower straight pipe section of the steel silo is 70-80mm, stop lifting the rotary unblocking machine. Then adjust the orientation, levelness, and centerness of the rotary unblocking machine so that the center line of the rotary unblocking machine matches the center line of the upper steel silo and the slide valve of the lower belt conveyor. S5. Fix the rotary unblocking machine. Loosen the temporary fixing measures so that the lower edge of the adjusting section is lowered to the upper opening of the rotary unblocking machine. Rotate the adjusting section to align the fixing bolt holes with the unblocking machine bolt holes. Then tighten another set of locking bolts and lock the pre-installed fixing bolts with nuts. Finally, adjust the outlet flange of the rotary unblocking machine and weld it to the slide valve.

2. The installation method of the rotary hearth furnace batching bin rotary cleaning machine according to claim 1, characterized in that, In S1, the adjusting section is made of 8-12mm steel plate.

3. The installation method of the rotary hearth furnace batching bin rotary cleaning machine according to claim 1, characterized in that, In S1, the bottom of the adjusting section has 24 sets of fixing bolt holes evenly distributed at 15° intervals, and the outer sides of both ends of the semi-circular ring are provided with locking bolt holes in groups of 3. The two sets of locking bolt holes opposite each other are fixedly connected by locking bolts.

4. The installation method of the rotary hearth furnace batching bin rotary cleaning machine according to claim 1, characterized in that, In step S2, the steel silo is installed as follows: when the concrete frame structure of the factory building is constructed to the fixed layer of the steel silo, the steel silo is hoisted into place outside the factory building using lifting machinery.

5. The installation method of a rotary hearth furnace batching bin rotary cleaning machine according to claim 1, characterized in that, In step S2, the steel silo is installed as follows: after the concrete frame structure of the factory building is capped, the steel silo is moved to the underside of the installation device by means of a sliding track and a hydraulic lifting device, and then the steel silo is lifted into place by a hoisting device set up in the concrete frame structure.

6. The installation method of the rotary hearth furnace batching bin rotary cleaning machine according to claim 1, characterized in that, In step S5, after the adjusting section is fixed, the fixing lugs of the steel silo and the fixing lugs of the rotating unblocking machine steel beam are connected and fixed by at least four turnbuckles.

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