Drop-resistant silo device
By designing an anti-drop silo device, and using a hopper, guide pipe, and spiral chute to slowly discharge materials, the problem of coke and sinter pulverization during silo loading was solved, achieving the effect of reducing breakage rate and cost.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUHAN IRON & STEEL GRP ECHENG IRON & STEEL CO LTD
- Filing Date
- 2025-07-03
- Publication Date
- 2026-07-03
AI Technical Summary
During the silo loading process in steel enterprises, the large drop in elevation leads to smaller particle size of coke and sinter, increasing the pulverization rate and increasing the cost of existing gas cap devices.
Design an anti-drop silo device, including a hopper, a guide pipe, a rotatable feeding chute and a spiral chute, to reduce drop and crushing through a slow feeding path, and to use a spiral chute made of stainless steel plate and an inner lining plate for protection.
Reducing the crushing rate of coke and sinter, decreasing the amount of small particles, and improving the quality of materials fed into the furnace bring significant economic benefits.
Smart Images
Figure CN224449536U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of metallurgical equipment technology, and in particular to a shockproof silo device. Background Technology
[0002] Steel mills typically load silos for sintered ore and coke at heights of around 15 meters. During loading, the sintered ore and coke are often crushed due to the significant drop, resulting in smaller particle sizes and increased pulverization. Some companies in the industry have adopted a method of adding air caps to the bottom of the silos to slow down the coke feeding speed and reduce crushing. However, the air cap structure increases the consumption of nitrogen or compressed air, leading to higher manufacturing costs. Utility Model Content
[0003] The purpose of this invention is to provide an anti-drop silo device to address the above-mentioned issues. This device can reduce the proportion of small particles in sinter and reduce the amount of coke coke particles.
[0004] The specific solution of this utility model is as follows: a shockproof silo device, comprising a silo body, and above the silo body, from top to bottom, a hopper, a guide pipe, a rotatable feeding chute, and a spiral chute. The hopper is located at the upper end of the guide pipe, and the lower end of the guide pipe is connected to the feeding chute, which is inclined downward. The upper end of the feeding chute is rotatably connected to the outer wall of the lower end of the guide pipe through a gooseneck ear plate, and the lower end of the feeding chute is connected to the upper end of the spiral chute, which extends into the interior of the silo body.
[0005] Furthermore, the material replenishment chute of this invention is provided with a semi-circular arc-shaped inner substrate plate on its chute surface. The inner substrate plate is connected to the material replenishment chute as a whole by screws. Several grooved partition plates are also provided along the length direction on the arc-shaped surface of the inner substrate plate. The upper surface of the grooved partition plates is provided as an arc-shaped surface.
[0006] Furthermore, the bottom surface of the feeding chute described in this utility model is also provided with a heat-resistant protective plate.
[0007] Furthermore, the spiral chute described in this utility model is provided with a protective sleeve on the outside, the spiral chute descends spirally from top to bottom, and the spiral chute is made of stainless steel plate.
[0008] Furthermore, the lower end of the spiral groove described in this utility model extends into the interior of the silo body and is 2m away from its inner bottom.
[0009] Furthermore, in this utility model, the lower end of the feeding chute overlaps with the upper port of the spiral chute, and a resting notch is provided at the upper port of the spiral chute, with the lower end of the feeding chute resting on the resting notch.
[0010] This utility model has the following beneficial effects:
[0011] 1. This utility model improves the existing silo feeding mechanism, thereby reducing the speed of coke feeding and reducing the chance of it being crushed by impact, thus achieving better performance.
[0012] 2. The application of this utility model device can reduce the proportion of small particles (external return) in sinter by about 0.3% and the amount of coke coke by about 0.2%. If calculated based on an annual production of 6.3 million tons of sinter and 2 million tons of coke, it can increase the amount of sinter fed into the furnace by 18,000 tons and metallurgical coke by 4,000 tons per year. Based on the current production cost of 840 yuan / ton for sinter and 1313 yuan / ton for coke, the direct economic benefits brought by the increase in sinter and metallurgical coke fed into the furnace are as follows: 18,000 × 8.4 million + 4,000 × 1313 = 20.372 million yuan, which brings significant economic benefits. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0014] Figure 2 This is a schematic diagram of the feeding chute structure in the main view direction of this utility model;
[0015] Figure 3 yes Figure 2 A top-view structural diagram;
[0016] Figure 4 yes Figure 3 Schematic diagram of CC structure;
[0017] Figure 5 This is a schematic diagram of the spiral groove structure in the main view direction of this utility model;
[0018] Figure 6 yes Figure 5 A schematic diagram of the main view direction.
[0019] In the diagram: 1—hopper, 2—feeder pipe, 3—feeding chute, 4—resting notch, 5—containment cylinder, 6—silo body, 7—goose head ear plate, 8—heat resistant protection plate, 9—grooved partition, 10—inner lining plate, 11—spiral chute, 12—coke. Detailed Implementation
[0020] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model. In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," etc., indicating orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. They are only for the convenience of describing this utility model or simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed or operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0021] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0022] See Figures 1-6 This utility model is an anti-drop silo device, which has a silo body 6. Above the silo body, from top to bottom, there are a hopper 1, a guide pipe 2, a rotatable feeding chute 3, and a spiral chute 11. The hopper is placed at the upper end of the guide pipe, and the lower end of the guide pipe is connected to the feeding chute. The feeding chute is set at an angle downward. The upper end of the feeding chute is rotatably connected to the outer wall of the lower end of the guide pipe through a gooseneck ear plate 7. The lower end of the feeding chute is connected to the upper end of the spiral chute, and the lower end of the spiral chute extends into the interior of the silo body.
[0023] Furthermore, the spiral chute described in this utility model is provided with a protective sleeve 5 on the outside, the spiral chute descends spirally from top to bottom, and the spiral chute is made of stainless steel plate.
[0024] Furthermore, the lower end of the spiral groove described in this utility model extends into the interior of the silo body and is 2m away from its inner bottom.
[0025] Furthermore, in this embodiment, the surface of the feeding chute is also provided with a semi-circular arc-shaped inner substrate plate 10. The inner substrate plate is connected to the feeding chute as a whole by screws. Several grooved partition plates 9 are also provided along the length direction on the arc surface of the inner substrate plate. The upper surface of the grooved partition plate is set as an arc surface.
[0026] Furthermore, a heat-resistant protective plate 8 is also provided on the bottom surface of the feeding chute described in this utility model.
[0027] Furthermore, in this utility model, the lower end of the feeding chute overlaps with the upper port of the spiral chute, and a resting notch 4 is provided at the upper port of the spiral chute, with the lower end of the feeding chute resting at the resting notch.
[0028] The basic implementation process of this utility model is as follows: sintered ore and coke are transported by belt to the hopper above the silo body, and then discharged from the hopper to the guide pipe. The sintered ore or coke is then guided through the feeding chute to the slide formed by the spiral chute installed in the silo body. The sintered ore or coke is slowly lowered to the bottom of the silo body through the slide, avoiding the crushing caused by direct discharge from the top of the silo.
[0029] This invention incorporates a feeding chute structure with an inner lining plate shaped like an arc. A row of grooved baffles is then placed within the inner lining plate. When coke feed flows down, it first fills the gaps between the grooved baffles, allowing subsequent feed to roll down along the surface of the coke, thus preventing significant wear on the feeding chute and further protecting it. Furthermore, the friction between coke particles during feeding further reduces the probability of coke breakage.
[0030] This invention improves the existing silo feeding mechanism, reducing the feeding speed of coke and thus decreasing the likelihood of breakage due to impact, resulting in better performance. The application of this device can reduce the proportion of small particles (external return) in sinter by approximately 0.3% and the amount of coke particles by approximately 0.2%. Based on an annual production of 6.3 million tons of sinter and 2 million tons of coke, this would increase the amount of sinter fed into the furnace by 18,000 tons and metallurgical coke by 4,000 tons annually. Using the current production cost of 840 yuan / ton for sinter and 1313 yuan / ton for coke, the direct economic benefit from the increased sinter and metallurgical coke input is calculated as follows: 18,000 × 8.4 million + 4,000 × 1313 = 20.372 million yuan, demonstrating significant economic benefits.
Claims
1. A fall arrest silo device having a silo body, characterised in that: Above the silo body, from top to bottom, are arranged a hopper, a guide pipe, a rotatable feeding chute, and a spiral chute. The hopper is located at the upper end of the guide pipe, and the lower end of the guide pipe is connected to the feeding chute. The feeding chute is angled downwards, and its upper end is rotatably connected to the outer wall of the lower end of the guide pipe through a gooseneck ear plate. The lower end of the feeding chute is connected to the upper end of the spiral chute, and the lower end of the spiral chute extends into the interior of the silo body.
2. A fall arrest silo apparatus according to claim 1, characterised in that: The feeding chute is also provided with a semi-circular inner substrate plate on its surface. The inner substrate plate is connected to the feeding chute as a whole by screws. Several grooved partitions are also provided on the arc surface of the inner substrate plate along the length direction. The upper surface of the grooved partitions is set as an arc surface.
3. A fall arrest silo device according to claim 2, characterised in that: A heat-resistant protective plate is also provided on the bottom surface of the feeding chute.
4. A fall arrest silo apparatus according to claim 1, wherein: The spiral chute is surrounded by a protective sleeve, and the spiral chute descends spirally from top to bottom. The spiral chute is made of stainless steel plate.
5. A fall arrest silo apparatus according to claim 1, wherein: The lower end of the spiral chute extends into the interior of the silo body and is 2m away from its inner bottom.
6. A fall arrest silo apparatus according to claim 1, wherein: The lower end of the feeding chute overlaps with the upper end of the spiral chute, and a support notch is provided at the upper end of the spiral chute, where the lower end of the feeding chute rests.