Material accumulation prevention device of annular cooling trolley

Abstract

The utility model relates to the technical field of iron and steel smelting, and provides a material accumulation prevention device of a ring cooling trolley, which comprises the ring cooling trolley, an air pipe assembly and a dust removal assembly, the dust removal assembly comprises a dust cover, and the dust cover is arranged above the ring cooling trolley; the annular cooling trolley is provided with a trolley body, the annular cooling trolley has a cooling mode and a discharging mode, and when the annular cooling trolley is in the discharging mode, the annular cooling trolley walks on the curved surface track; the curved rail comprises a curved rail climbing section, the air pipe assembly is arranged on the curved rail climbing section, a right angle is formed at the front end of the annular cooling trolley and at the joint of the supporting plate and the upper face of the trolley body, and a rib plate is arranged at the right angle. According to the utility model, the vicious fault that the trolley collapses at the bent rail due to the fact that the hinged support of the annular cooling trolley is easy to break due to stress is solved, the maintenance efficiency is improved, the maintenance cost is reduced, the structure is simple, the installation is convenient, and the universality is good.

Description

Technical Field

[0001] This utility model relates to the field of iron and steel smelting technology, specifically to an anti-material accumulation device for an annular cooling trolley. Background Technology

[0002] A ring cooler, short for ring-type cooler, is used to effectively cool sintered hot ore discharged from the sintering machine. Compared with belt coolers, ring coolers have advantages such as smaller footprint, lower investment, and higher equipment utilization. They are widely used in ironmaking plants across the country, with water-sealed ring coolers being one of the mainstream types.

[0003] The annular cooling frame body 3 moves in a circular motion, driving the annular cooling trolley 1 to move in a circular motion. After the sintered ore is cooled by the annular cooler, the annular cooling trolley 1, driven by the annular cooling frame body 3, passes through the curved track unloading section 21, such as... Figure 4 , Figure 5 As shown, as the ring cooling trolley 1 gradually enters the curved track unloading section 21, the rear end of the ring cooling trolley 1 moves away from the ring cooling frame body 3 and gradually tilts to unload the cooled sintered ore on the ring cooling trolley 1. After unloading, the ring cooling trolley 1 passes through the curved track climbing section 23 and gradually closes, entering a new round of ring cooling receiving and cooling cycle.

[0004] In the water-sealed ring cooler trolley, material easily accumulates in the second compartment, such as... Figure 4 As shown, after a period of production, material may even form deposits. During the climbing and closing process of the annular cooling trolley 1, the annular cooling frame body 3 will crush the interfering material deposits. If the material deposits are too large and too dense, the hinge seat 123 connecting the annular cooling trolley 1 and the annular cooling frame body 3 will break under stress, causing the annular cooling trolley 1 to collapse at the curved track, resulting in a major accident. A certain ironmaking plant has experienced several such failures, requiring more than 40 hours of emergency repairs, which seriously affected the ironmaking production order. To avoid similar failures, the ironmaking plant stipulates that before each maintenance, the annular cooling machine must be run for two hours in advance before restarting production. Special personnel are assigned to check the two compartments of material accumulation at the curved track on both the inner and outer rings. If material deposits are found, the machine must be stopped and the power cut off immediately. This seriously affects the efficiency of each maintenance. Therefore, it is urgent to design a structure to prevent material accumulation and solve the above-mentioned defects. Utility Model Content

[0005] In view of the deficiencies in the existing technology, the purpose of this utility model is to provide an anti-material accumulation device for a ring-cooled trolley.

[0006] According to the present invention, a device for preventing material accumulation on an annular cooling trolley includes an annular cooling trolley, an air duct assembly, and a dust removal assembly. The dust removal assembly includes a dust cover, which is arranged above the annular cooling trolley.

[0007] The annular cooling trolley has a grate plate layer arranged at the top and a trolley body arranged at the bottom. The two sides of the bottom of the grate plate layer are respectively connected to the top of the trolley body through support plates. The two support plates, the grate plate layer and the trolley body together form a chamber. The sinter to be cooled is placed on the grate plate layer.

[0008] The ring cooling trolley has a cooling mode and an unloading mode. When the ring cooling trolley is in cooling mode, it travels on a horizontal track. When the ring cooling trolley is in unloading mode, it travels on a curved track.

[0009] The curved track includes a curved track climbing section, and the air duct assembly is disposed on the curved track climbing section for blowing away accumulated material on the trolley body;

[0010] The front end of the ring cooling trolley is connected to the ring cooling frame body via a hinge. At the front end of the ring cooling trolley, the connection between the support plate and the upper part of the trolley body forms a right angle. A stiffener is provided at the right angle. One end of the stiffener is connected to the upper part of the trolley body, and the other end is connected to the support plate, so that the right angle becomes two obtuse angles.

[0011] Preferably, the stiffening plate is a triangular plate, trapezoidal or rectangular plate.

[0012] Preferably, the two ends of the stiffener are welded to the trolley body and the support plate, respectively.

[0013] Preferably, the outer side of the support plate faces away from the chamber, and the upper part of the trolley body is the edge of the partition.

[0014] The air duct assembly includes a first air duct, a second air duct, and a third air duct, which blow air from different angles toward the edge of the partition.

[0015] Preferably, the first blower pipe, the second blower pipe, and the third blower pipe are all rigid, flexible pipes.

[0016] Preferably, the openings of the first air pipe, the second air pipe, and the third air pipe are all located on both sides of the annular cooling trolley and above the edge of the partition.

[0017] Preferably, the first air blower outlet is oriented parallel to the support plate, and the third air blower outlet is oriented perpendicular to the support plate.

[0018] Preferably, the orientation of the second blower nozzle forms an angle with the support plate, and the angle is between ° and °.

[0019] Preferably, the dust removal assembly further includes an air duct connected to the dust cover, a dust collector, and a fan, wherein the outlet of the dust collector is connected to the fan, and the inlet of the dust collector is connected to the dust cover through the air duct.

[0020] Preferably, the ring cooling trolley has trolley wheels, and a protective plate is provided between the trolley wheels and the trolley body, the protective plate covering the wheel axle of the trolley wheels;

[0021] The second air blower has its nozzle tilted downwards, allowing air to be blown onto the protective plate.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] This invention solves the serious problem of the ring cooling trolley collapsing at the curved track by adding stiffening plates to the ring cooling trolley, installing a dust cover on the top of the ring cooling trolley, and adding multiple air ducts on the side of the ring cooling trolley to blow the top of the trolley body and the wheel axle from different angles. After cleaning, there are no large pieces of material in the two compartments of the ring cooling trolley. This solves the problem of the ring cooling trolley hinge easily breaking under stress, causing the trolley to collapse at the curved track. Maintenance does not require the installation of a dedicated person to check the material accumulation in the two compartments at the inner and outer curved tracks of the ring cooler, which improves maintenance efficiency, reduces environmental pollution, and lowers maintenance costs. Moreover, the structure is simple, easy to install, and has good versatility. Attached Figure Description

[0024] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0025] Figure 1 This is a schematic diagram of the structure when the ring cooling trolley moves to the curved track climbing section;

[0026] Figure 2 This is a schematic diagram of the structure of the central ring refrigerated trolley of this utility model;

[0027] Figure 3 This is a schematic diagram illustrating the operational principle of the central ring refrigerated trolley of this utility model from closing to opening for unloading and then back to closing.

[0028] Figure 4 This is a schematic diagram of the structure of the ring-cooled trolley when it moves to the curved track climbing section in the existing technology;

[0029] Figure 5 This is a structural schematic diagram of a ring-type refrigeration trolley in the existing technology;

[0030] Figure 6 These are structural schematic diagrams of two embodiments of the stiffening plate;

[0031] Figure 7 A comparison diagram showing the ribs before and after installation.

[0032] The diagram shows:

[0033] Circular Cooling Trolley 1

[0034] 11 grate layers

[0035] 12 trolley bodies

[0036] 121 trolley wheels

[0037] Rib 122

[0038] Hinge 123

[0039] 124 of the partition edge

[0040] Protective plate 125

[0041] Support plate 13

[0042] Through hole 131

[0043] Chamber 14

[0044] Curved track 2

[0045] Curved rail unloading section 21

[0046] Transition section 22

[0047] Curved track climbing section 23

[0048] 3-dimensional cooling frame body

[0049] Horizontal track 4

[0050] Duct assembly 5

[0051] First air duct 51

[0052] Second air duct 52

[0053] Third air duct 53 Detailed Implementation

[0054] The present invention will now be described in detail with reference to specific embodiments. These embodiments will help those skilled in the art to further understand the present invention, but do not limit the present invention in any way. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all fall within the protection scope of the present invention.

[0055] This utility model provides an anti-material accumulation device for an annular cooling trolley, including an annular cooling trolley 1, an air duct assembly 5, and a dust removal assembly, such as... Figure 2As shown, the annular cooling trolley 1 has a grate layer 11 arranged at the top and a trolley body 12 arranged at the bottom. The grate layer 11 is used to place the sinter to be cooled. The two sides of the bottom of the grate layer 11 are connected to the top of the trolley body 12 by support plates 13. The two support plates 13, the grate layer 11, and the trolley body 12 together form a chamber 14. The chamber 14 provides a channel for air flow, which facilitates the cooling of the sinter. The outer side of the support plate 13 faces away from the chamber 14. The upper part of the trolley body 12 is the partition edge 124. To increase the cooling effect, the support plate 13 is evenly distributed with through holes 131. The design of the through holes 131 is conducive to the flow of gas and the cooling effect is better.

[0056] The front end of the annular cooling trolley 1 is connected to the annular cooling frame body 3 via hinge 123, as follows: Figure 1 As shown, the ring cooling trolley 1 has a cooling mode and an unloading mode. When the ring cooling trolley 1 is in the cooling mode, the ring cooling frame body 3 drives the ring cooling trolley 1 to travel on the horizontal track 4. When the ring cooling trolley 1 is in the unloading mode, the ring cooling frame body 3 drives the ring cooling trolley 1 to travel on the curved track 2. The ring cooling trolley 1 has trolley wheels 121. A protective plate 125 is provided between the trolley wheels 121 and the trolley body 12. The protective plate 125 is U-shaped and covers the axle of the trolley wheels 121, so that the sintered material cannot accumulate on the axle. In order to improve the anti-accumulation effect, the protective plate 125 is made as large as possible to completely cover the gap between the trolley wheels 121 and the trolley body 12. At the same time, when the trolley wheels 121 are moving, the protective plate 125 and the trolley wheels 121 will not interfere with each other. When the ring cooling trolley 1 is moving, the traction force at the front end drives the trolley wheels 121 to travel on the track.

[0057] Furthermore, the curved track 2 includes a curved track unloading section 21, a transition section 22, and a curved track climbing section 23 connected in sequence. When the annular cooling trolley 1 travels on the curved track unloading section 21, the partition edge 124 of the annular cooling trolley 1 gradually separates from the annular cooling frame body 3, causing the annular cooling trolley 1 to gradually open and begin unloading the cooled sintered ore. The entire annular cooling trolley 1 is in an inclined state, and the inclination angle increases as it moves from the curved track unloading section 21 to the transition section 22. The sintered ore piled up on the grate layer 11 is unloaded after rolling off the grate layer 11 due to gravity. The ring cooling trolley 1 enters the curved track climbing section 23 after passing through the transition section 22. During the climbing process of the ring cooling trolley 1, it gradually approaches the ring cooling frame body 3, so that the partition edge 124 and the ring cooling frame body 3 gradually approach each other. When the ring cooling trolley 1 leaves the curved track climbing section 23 and enters the horizontal track 4, the partition edge 124 of the ring cooling trolley 1 and the ring cooling frame body 3 have closed contact.

[0058] like Figure 2As shown, at the front end of the annular cooling trolley 1, the connection between the support plate 13 and the upper part of the trolley body 12 forms a right angle. To prevent material accumulation on the edge 124 of the partition plate of the annular cooling trolley 1, which could damage the hinge seat 123 or the annular cooling frame body 3 when the trolley 1 is closed, a stiffener 122 is provided at the right angle. One end of the stiffener 122 is connected to the upper part of the trolley body 12, and the other end is connected to the support plate 13. Preferably, the stiffener 122 is fixed by welding. The stiffener 122 transforms the right angle into two obtuse angles. Figure 7 As shown, experimental verification has shown that the design of stiffener 122 effectively prevents material accumulation at the edge 124 of the partition, and the design of stiffener 122 achieves an unexpected anti-accumulation technical effect. In one possible embodiment, stiffener 122 is a triangular plate, such as... Figure 6 (1) Figure 7 As shown, the triangular plate is welded at the right angle formed by the support plate 13 and the trolley body 12, thus turning the right angle into two obtuse angles. In another possible embodiment, the stiffening plate 122 adopts... Figure 6 In (2) of the trapezoidal structure, the stiffener 122 can also adopt a rectangular structure, which also turns the right angle into two obtuse angles and achieves the technical effect of preventing material accumulation.

[0059] To prevent material accumulation on the partition edge 124 of the ring cooling trolley 1, which could damage the hinge seat 123 or the ring cooling frame body 3 when the trolley 1 is closed, a duct assembly 5 is also provided on the curved track climbing section 23. The duct assembly 5 includes a first air duct 51, a second air duct 52, and a third air duct 53. The first air duct 51, the second air duct 52, and the third air duct 53 are designed to blow material from different angles to the partition edge 124 to prevent material accumulation on the trolley body 12. During production, the ducts are in a normally open state to continuously clean and blow away accumulated material.

[0060] Furthermore, such as Figure 1 As shown, the first air pipe 51, the second air pipe 52, and the third air pipe 53 are all rigid and flexible pipes. The first air pipe 51, the second air pipe 52, and the third air pipe 53 are all arranged on the curved track climbing section 23. The pipe openings of the first air pipe 51, the second air pipe 52, and the third air pipe 53 are all located on both sides of the annular cooling trolley 1 and above the partition edge 124. That is to say, the first air pipe 51, the second air pipe 52, and the third air pipe 53 are arranged on the left and right sides of the annular cooling trolley 1.

[0061] Furthermore, the first air pipe 51 is oriented parallel to the support plate 13, while the second air pipe 52 forms an angle with the support plate 13, ranging from 30° to 60° (e.g., 45°). Because the second air pipe 52 is slightly downward-sloping, it can also blow air onto the protective plate 125, preventing material accumulation there. The third air pipe 53 is oriented perpendicular to the support plate 13. This three-pipe design effectively cleans the sintered ore on the trolley body 12, preventing accumulation and agglomeration. Simultaneously, it removes material trapped between the trolley wheel axle and the trolley body 12, thus solving the problem of material being carried along the trolley during operation.

[0062] It should be noted that since the air blowers are all rigid and flexible pipes, the ends of the air blowers can be bent by heating to make them face the target direction, so as to clean the material accumulated on the trolley body 12, especially the material accumulated on the edge of the partition 124. The structure is simple and the operation is convenient.

[0063] To enhance the removal of accumulated material and prevent dust accumulation from causing material agglomeration, a dust removal assembly is installed on the top of the annular cooling trolley 1. The dust removal assembly includes a dust cover on top and an air duct connected to the dust cover. Through the cooperation of the dust collector and the fan, the dust in the area of ​​the annular cooling trolley 1 is sucked away, creating a negative pressure environment inside the dust cover, effectively preventing dust from overflowing. This not only prevents material accumulation but also benefits environmental protection.

[0064] It should be noted that during production, the accumulation of material on the edge 124 of the partition can be observed during inspections, and the angle and airflow of the air ducts can be adjusted accordingly to ensure that the accumulated material on the edge 124 of the partition of each annular cooling trolley 1 and on the trolley wheel axle are cleaned. Meanwhile, due to the design of the dust removal components, the blown dust is located inside the dust cover and will not cause dust pollution. To further improve the dust prevention effect, several more sets of air ducts can be added. Using these ducts to clean the trolley body 12, the annular cooling machine body panels, and the rotating frame inside the curved track cover will not cause environmental pollution and will also make the annular cooling machine panels, frame, and trolley more aesthetically pleasing.

[0065] The working principle of this utility model is as follows:

[0066] like Figure 3 As shown, the ring cooling trolley 1 first travels on the horizontal track 4. At this time, the partition edge 124 of the ring cooling trolley 1 contacts the ring cooling frame body 3, and the ring cooling trolley 1 is in a closed state.

[0067] When the ring cooling trolley 1 moves onto the curved track 2, it first enters the curved track unloading section 21. The ring cooling trolley 1 begins to tilt, and the edge of the partition 124 gradually separates from the ring cooling frame body 3. The tilt angle of the ring cooling trolley 1 becomes larger and larger, and the sintered ore on the ring cooling trolley 1 begins to be unloaded and fall into the hopper. Preferably, the maximum tilt angle of the ring cooling trolley 1 is greater than 45°. When the maximum tilt angle is reached, the ring cooling trolley 1 begins to pass through the transition section 22.

[0068] When the ring cooling trolley 1 moves onto the curved track climbing section 23, it gradually approaches the ring cooling frame body 3, causing the partition edge 124 to gradually approach the ring cooling frame body 3. When the ring cooling trolley 1 leaves the curved track climbing section 23 and enters the horizontal track 4, the partition edge 124 of the ring cooling trolley 1 and the ring cooling frame body 3 are in closed contact. The accumulated material on the trolley body 12 is blown off by the air duct assembly, and the stiffening ribs significantly reduce the amount of accumulated material, effectively preventing major accidents such as the breakage of the hinge 123 connecting the ring cooling trolley 1 and the ring cooling frame body 3 due to excessive and compacted material, and the collapse of the ring cooling trolley 1 at the curved track.

[0069] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0070] The specific embodiments of this utility model have been described above. It should be understood that this utility model is not limited to the specific embodiments described above, and those skilled in the art can make various changes or modifications within the scope of the claims, which do not affect the substantive content of this utility model. Unless otherwise specified, the embodiments and features described in this application can be arbitrarily combined with each other.

Claims

1. A material accumulation preventing device of a ring cooling trolley, characterized by comprising: The device comprises a ring cooling trolley (1), a wind pipe assembly (5) and a dust removal assembly, the dust removal assembly comprises a dust cover arranged above the ring cooling trolley (1); The ring cooling trolley (1) has a grate layer (11) arranged at the upper part and a trolley body (12) arranged at the lower part, the two sides of the bottom of the grate layer (11) are connected to the upper surface of the trolley body (12) through support plates (13) respectively, the space between the two support plates (13), the grate layer (11) and the trolley body (12) forms a cavity (14), and the grate layer (11) is used for placing the sinter to be cooled; The ring cooling trolley (1) has a cooling mode and a discharging mode, when the ring cooling trolley (1) is in the cooling mode, the ring cooling trolley (1) runs on the horizontal rail (4), and when the ring cooling trolley (1) is in the discharging mode, the ring cooling trolley (1) runs on the curved rail (2); The curved rail (2) comprises a curved rail climbing section (23), and the wind pipe assembly (5) is arranged on the curved rail climbing section (23) and used for blowing away the accumulated materials on the trolley body (12); The front end of the ring cooling trolley (1) is connected to the ring cooling frame body (3) through a hinge base (123), at the front end of the ring cooling trolley (1), the connection between the support plate (13) and the upper surface of the trolley body (12) forms a right angle, a rib plate (122) is arranged at the right angle, one end of the rib plate (122) is connected to the upper surface of the trolley body (12), and the other end of the rib plate (122) is connected to the support plate (13), so that the right angle becomes two obtuse angles.

2. The device for preventing material accumulation of a ring cooling trolley according to claim 1, wherein The rib plate (122) is in the shape of a triangular plate, a trapezoidal plate or a rectangular plate.

3. The device for preventing material accumulation of a ring cooling trolley according to claim 1, wherein The two ends of the rib plate (122) are welded to the trolley body (12) and the support plate (13) respectively.

4. The device for preventing material accumulation of a ring cooling trolley according to claim 1, wherein The outer side of the support plate (13) is directed away from the cavity (14), and the upper surface of the trolley body (12) is a partition plate edge (124); The wind pipe assembly (5) comprises a first blowing pipe (51), a second blowing pipe (52) and a third blowing pipe (53), the first blowing pipe (51), the second blowing pipe (52) and the third blowing pipe (53) blow towards the partition plate edge (124) from different angles respectively.

5. The device for preventing material accumulation of a ring cooling trolley according to claim 4, wherein The first blowing pipe (51), the second blowing pipe (52) and the third blowing pipe (53) are rigidly flexible pipes.

6. The device for preventing material accumulation of a ring cooling trolley according to claim 4, wherein The pipe openings of the first blowing pipe (51), the second blowing pipe (52) and the third blowing pipe (53) are located on the two sides of the ring cooling trolley (1) and above the partition plate edge (124).

7. The device for preventing material accumulation of a ring cooling trolley according to claim 6, wherein The direction of the pipe opening of the first blowing pipe (51) is parallel to the support plate (13), and the direction of the pipe opening of the third blowing pipe (53) is perpendicular to the support plate (13).

8. The device for preventing material accumulation of a ring cooling trolley according to claim 6, wherein The direction of the pipe opening of the second blowing pipe (52) forms an included angle with the support plate (13), and the included angle is 30°-60°.

9. The device for preventing material accumulation of a ring cooling trolley according to claim 1, wherein The dust removal assembly further comprises a wind pipe connected to the dust cover, a dust remover and a fan, the outlet of the dust remover is connected to the fan, and the inlet of the dust remover is connected to the dust cover through the wind pipe.

10. The device for preventing material accumulation of a ring cooling trolley according to claim 8, wherein The ring cooling trolley (1) has trolley wheels (121), a guard plate (125) is arranged between the trolley wheels (121) and a trolley body (12), and the guard plate covers the wheel shafts of the trolley wheels (121); The second blowing pipe (52) is inclined downward, and the position of the guard plate (125) can be blown by the second blowing pipe (52).

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