Multi-layer material distribution annular vertical cooling machine

Abstract

The utility model discloses a multilayer material distribution annular vertical cooler which comprises a rotating platform, vertical side breast boards are arranged on the two sides of the rotating platform, a feeding area is formed on the rotating platform between the two side breast boards, an air inlet device fixedly connected with the rotating platform is arranged in the feeding area, and the air inlet device comprises a supporting panel and an air blowing area. The supporting panel is provided with a plurality of hidden air blowing openings communicated with an air blowing area below the supporting panel, the supporting panel forms a landslide type structure with the high middle and the two low sides, and side discharging openings are formed between the lower ends of the two side breast boards and the rotating platform. A plurality of layers of sinter are laid on the landslide type air inlet device, the temperature difference of the sinter on each layer is small, and the temperature of the sinter from the bottom layer to the top layer is gradually increased, so that hot air blown out of an air blowing area penetrates through each material layer and is gradually heated to more than 450 DEG C, and the sinter with low temperature is discharged from the side discharge ports on the two sides. And the waste heat generating capacity is increased to more than 30 kilowatt-hours per ton of ore.

Description

Technical Field

[0001] The utility model relates to the technical field of environmental protection mechanical equipment, and particularly relates to a multi-layer cloth annular vertical cooler for cooling sintered ore and recovering waste heat. Background Art

[0002] The main methods for cooling sintered ore after roasting mainly include belt cooling and ring cooler cooling.

[0003] The main cooling equipment for belt cooling is a belt machine. The air boxes and trolleys of the belt machine have poor sealing performance and a high air leakage rate, resulting in the need to configure a large air volume for the cooling fan. The external environmental conditions of the air box are poor. To meet the environmental protection requirements, the air volume and dust collector of the corresponding induced draft fan are relatively large, so the floor area is large, the investment is large, the energy consumption is high, and the waste heat of the material cannot be fully recovered and utilized.

[0004] The main equipment for ring cooling is a ring cooler. The sintered ore is laid on the trolley of the ring cooler, and the thickness of the sintered material layer is 700 - 1500 mm. There are multiple cooling air boxes under the trolley of the ring cooler, and the trolley runs in a circle on the circular track. At present, the ring cooler for sintered ore has good sealing and a low air leakage rate. However, from the ring cooler feeding point to the discharging point, the temperature of the cooling exhaust air gradually decreases. The exhaust air temperature in the second half of the ring cooler has no utilization value and can only be discharged after dust removal and purification. The air temperature in the first half is relatively high, reaching above 280 °C and having the value of waste heat utilization. Therefore, the air volume used for ring cooling is relatively large, the power consumption is high, and the waste heat of the ore cannot be fully utilized and recovered. Content of the Utility Model

[0005] In order to solve the above-mentioned technical problems, the utility model provides a multi-layer cloth annular vertical cooler, aiming to improve the waste heat utilization rate of sintered ore and make the waste heat power generation reach more than 30 degrees per ton of ore.

[0006] The technical scheme adopted is as follows:

[0007] A multi-layer cloth annular vertical cooler includes a rotating platform. Vertical side guard plates are arranged on both sides of the rotating platform. An inlet area is formed on the rotating platform between the two side guard plates. An air inlet device fixedly connected to the rotating platform is arranged in the inlet area. The air inlet device includes a support panel and a blowing area; a plurality of hidden air blowing ports communicating with the blowing area below it are arranged on the support panel. The support panel forms a landslide structure with a high middle part and low sides. A side discharge opening is formed between the lower ends of the two side guard plates and the rotating platform. The sintered ore naturally discharges from the side discharge opening along the support panel by gravity.

[0008] Furthermore, the height of the side guard plate is 1.5 m - 5 m. When driving the rotating platform to rotate, multiple layers of sintered ore are formed on the support panel of the air inlet device.

[0009] Preferably, the height of the side guard board is 1.6 m - 4 m.

[0010] Further, material platforms are respectively arranged on both sides around the rotary platform. One end of the material platform is fixedly connected to the rotary platform. A discharging device is arranged above the material platform, and the side discharging opening is arranged between the side guard board and the material platform.

[0011] Preferably, the width of the material platforms on both sides of the rotary platform is 400 mm - 1500 mm.

[0012] Preferably, the width of the material platform is 600 mm - 1000 mm.

[0013] Further, the side guard board includes a fixed board and a lower guard board. The fixed board is fixed on the columns on both sides of the rotary platform, and the side discharging opening is formed between the lower end of the fixed board and the material platform. The lower guard board is arranged on the fixed board in a vertically rotatable or movable manner to control the cold air intake amount of the side discharging opening.

[0014] Preferably, the discharging device is a plow-shaped scraper structure and / or a rotary scraping device, and a plurality of them are arranged at intervals around the material platforms on both sides of the rotary platform.

[0015] Preferably, the included angle formed by the landslide-type support panels on both sides of the air inlet device is 15 - 85 degrees.

[0016] Preferably, the cross section of the support panel is a herringbone structure or a parabolic structure, and it is fixedly connected to the support cross beam on the rotary platform through a vertical support.

[0017] The technical solution of the present utility model has the following advantages:

[0018] A. The present utility model adopts a multi-layer cloth annular vertical cooler. In the feeding area between the side guard boards, while controlling the rapid rotation of the rotary platform, multiple layers of sintered ore are laid on the landslide-type air inlet device. Since the temperature difference between the sintered ore layers is small, and the temperature of the sintered ore gradually increases from the bottom layer to the top layer, the hot air blown out from the air blowing area passes through each material layer and is gradually heated to above 450 °C. The sintered ore with a low temperature moves downward along the inclined landslide-type structure by its own weight, and then is discharged from the side discharging openings on both sides. The waste heat power generation is expected to be increased to more than 30 degrees of electricity per ton of ore.

[0019] B. The utility model arranges multiple layers of material beds on the air inlet device. The laying speed of the material bed is 2-3 times that of the traditional laying speed. The thickness of the material bed is relatively thin, and the temperature difference of each layer of sintered ore material is small. The temperature consistency of the hot air blown by the circulating fan to the sintered ore is better. At the same time, the utility model removes the crank connecting rod and guide rail of the traditional ring cooler, with a simpler structure and a significant reduction in investment, and can effectively increase the power generation by about 35%.

[0020] C. The utility model arranges several discharge devices along the material table, and at the same time sets a movable side guard plate structure for controlling the cold air intake of the side discharge port. The amount of cold air intake from the side is adjusted according to factors such as the running speed of the rotating platform and the thickness of the material bed. The rotating scraper or pear-shaped discharge device on both sides of the material table can quickly scrape off the material bed discharged from the side discharge port by the low-temperature cold sintered ore from the rotating platform. The utility model adopts the vertical feeding and side discharge methods, combined with the rotating scraper or pear-shaped discharge device, can quickly discharge the low-temperature sintered ore. The discharge speed is fast, enabling the upward blown air to fully absorb the heat energy of each material layer, and thus the hot air discharged from the top of the material layer has a relatively high temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the specific embodiments of the present utility model, the drawings required for the specific embodiments will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0022] Figure 1 is a schematic cross-sectional view of the trolley provided by the present utility model;

[0023] Figure 2 is a schematic side view of the trolley provided by the present utility model.

[0024] The reference symbols provided in the drawings are explained as follows:

[0025] 1 - rotating platform, 11 - support cross beam

[0026] 2 - side guard plate

[0027] 21 - fixing plate, 22 - lower guard plate

[0028] 3 - air inlet device

[0029] 31 - support panel, 311 - hidden air outlet

[0030] 32 - vertical support

[0031] 4 - material table; 5 - discharge device; 6 - column; 7 - pin shaft

[0032] a - Feeding area, b - Blowing area, c - Side discharge opening. Detailed implementation manners

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0034] As Figure 1 shown, the present utility model provides a multi-layer cloth annular vertical cooler, which includes a rotating platform 1. Vertical side guard plates 2 are arranged on both sides of the rotating platform 1. A feeding area a is formed on the rotating platform 1 between the two side guard plates 2. The vertical distance between the upper top surfaces of the two side guard plates 2 and the upper plane of the rotating platform is 1.5 m - 5 m, preferably 1.6 m - 4 m. An air inlet device 3 fixedly connected to the rotating platform 1 is arranged in the feeding area a. The air inlet device 3 includes a support panel 31 and a blowing area b. A blower blows air towards the blowing area b. At the same time, a plurality of concealed air outlets 311 communicating with the blowing area b below are arranged on the support panel 31. The blown air blows upwards from the concealed air outlets 311 and then penetrates through the sintered ores laid in multiple layers above, so that the hot air is gradually heated to above 450°C. The support panel 31 adopted is a landslide structure with a high middle and low sides, which is used to slide the low-temperature materials out from the landslide support panel by their own gravity. The support panel is preferably in a herringbone or parabolic structure, and is fixedly connected to the support cross beam 11 on the rotating platform 1 through a vertical support 32. A side discharge opening c is formed between the lower ends of the two side guard plates 2 and the rotating platform 1. The cooled low-temperature sintered ores are naturally discharged from the side discharge opening along the support panel by gravity.

[0035] As a preferred specific implementation manner of the present utility model, material platforms 4 are respectively arranged on both sides around the rotating platform 1. One end of the material platform 4 is fixedly connected to the rotating platform 1. A discharger 5 is arranged above the material platform 4. The side discharge opening c is arranged between the side guard plate 2 and the material platform 4. The temperature of the low-temperature sintered ores discharged from the side discharge opening c by their own gravity is below 100°C, and they slide onto the horizontally arranged material platform 4, and then the low-temperature sintered ores are collected by the discharger 5. The widths of the material platforms 4 on both sides of the rotating platform 1 are 400 mm - 1500 mm, preferably 600 mm - 1000 mm. Of course, other widths can also be selected. The discharger 5 is preferably a plow-shaped scraper structure or a rotary scraper (not shown in the figure). A plurality of them are arranged at intervals around the material platforms 4 on both sides of the rotating platform 1. For example, there are 8 - 10 plow-shaped dischargers in each multi-layer cloth annular vertical cooler, which are located above the two material platforms 4. For example, one or more rotary scrapers are arranged on each material platform 4 to realize the rapid discharge of the cooled low-temperature sintered ores.

[0036] The utility model drives the overall rotation of the rotary platform 1 through a driving device, and forms multiple layers of sintered ore laid on the support panel 31 of the air inlet device 3 by controlling the thickness of the laid material layer. The height of the feeding area formed by the side baffles is doubled compared with that of the traditional annular cooling machine. The height of the side baffles is 1.5 m - 5 m, preferably 1.6 m - 4 m. The rotational angular velocity of the rotary platform is increased by 2 - 3 times, which is equivalent to doubling the volume of the trolley of the multi-layer vertical charging annular cooling machine. With the increase of the material layer height and the acceleration of the movement speed of the rotary platform 1, it means that the thinner the sintered ore is laid on each layer of the rotary platform, and the smaller the temperature difference between each layer of materials. The temperature consistency of the air blown by the circulating fan to the sintered ore is better. At the same time, the air volume of the circulating fan can be reduced. When the amount of air blowing reaches a certain balance, the discharging temperature can be maintained at about 100 °C, and the air passing through the material layer is heated to more than 450 °C, so that as many hot air temperatures as possible reach more than 450 °C, thereby increasing the power generation.

[0037] As Figure 2 shown, in order to better control the cold air intake of the side discharge ports c on both sides, as a further preferred implementation manner of the utility model, the side discharge ports are set to be adjustable. The side baffle 2 includes a fixed plate 21 and a lower guard plate 22. The fixed plate 21 is fixed on the columns 6 on both sides of the rotary platform 1, and a side discharge port c is formed between the lower end of the fixed plate 21 and the material table 4. Preferably, the thickness of the box body is 80 - 150 mm, and the box body is filled with heat-insulating materials in the middle. The lower guard plate 22 can be rotated or arranged to be movable up and down on the fixed plate 21 for adjusting the opening of the side discharge port c. For example, the lower guard plate 22 is uniformly provided with 4 - 6 holes in each row from the middle of the upper part to the lower part, with a total of 3 - 4 rows, and the hole spacing in each row is between 100 - 150 mm. Fixed holes are provided on the fixed plate 21. After determining the opening of the side discharge port c, the pin shaft 7 can be inserted into the pin holes and the fixed holes in sequence. Of course, an automatic control device can also be used to control the up and down movement of the lower guard plate 22 along the fixed plate 21 or to adjust the opening of the side discharge port in the form of the rotation of the lower guard plate 22, and the opening of the side discharge port is adaptively controlled according to the speed, material quantity and temperature of the rotary platform.

[0038] Specifically, 2 - 3 transverse support beams are arranged at the lower part of the air inlet device 3 on the rotary platform 1 of the utility model as the brackets of the track. Angle steel supports are arranged inside the support panels 31 on both sides of the air inlet device 3. At the same time, the angle steel supports are welded to the vertical angle steel supports, and the vertical angle steel supports are welded to the transverse support beams to form a triangular support structure. Preferably, 4 - 6 longitudinal columns 6 are arranged on both sides of the air inlet device 3 and welded to the height-adjustable side baffle 2.

[0039] The air inlet device 3 is welded to the two fabric platforms 4. The included angle formed by the landslide-type support panels 31 on both sides of the air inlet device 3 is 15 - 85 degrees, preferably 35 - 45 degrees. At the same time, the concealed air blowing openings 311 on the support panels 31 are arranged in the middle area of the two landslide-type support panels 31. For example, the part below one-third from the bottom to the top of each support panel is a flat plate, and the concealed air blowing openings 311 are arranged in the part above one-third. The connecting part of the two support panels 31 is an arc-shaped plate, and no concealed air blowing openings 311 are arranged thereon.

[0040] Compared with the traditional ring cooler, the utility model omits the complex mechanical structure, has a simple structure, small investment, high return rate, short construction period, and can effectively increase the power generation by about 35%.

[0041] What is not described in the utility model applies to the prior art.

[0042] Obviously, the above embodiments are only examples for clear illustration and not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation manners here. The obvious changes or modifications derived therefrom are still within the protection scope of the utility model.

Claims

1. A multi-layer cloth annular vertical cooling machine, comprising a rotating platform (1), vertical side fences (2) are arranged on both sides of the rotating platform (1), a feeding area (a) is formed on the rotating platform (1) between the two side fences (2), an air inlet device (3) fixedly connected to the rotating platform (1) is arranged in the feeding area (a), the air inlet device (3) comprises a supporting panel (31) and a blast area (b), characterized in that: The support panel (31) is provided with a plurality of hidden blowing ports (311) connected to the blast area (b) below the support panel (31), and the support panel (31) forms a landslide structure with a high middle portion and low sides, and a side discharge port (c) is formed between the lower ends of the two side fences (2) and the rotating platform (1), and the sintered ore is naturally discharged from the side discharge port along the support panel by gravity.

2. The multi-layer cloth annular vertical cooler according to claim 1, characterized in that: The side guard plate has a height of 1.5m-5m. When the rotating platform (1) is driven to rotate, multiple layers of sintered ore are formed on the supporting panel (31) of the air inlet device (3).

3. The multi-layer cloth annular vertical cooler according to claim 2, characterized in that: The side railing has a height of 1.6m-4m.

4. The multi-layer cloth annular vertical cooler according to claim 1, characterized in that: A material platform (4) is provided on both sides surrounding the rotating platform (1), one end of the material platform (4) is fixedly connected to the rotating platform (1), a discharger (5) is provided above the material platform (4), and the side discharge port (c) is arranged between the side fence (2) and the material platform (4).

5. The multi-layer cloth annular vertical cooler according to claim 4, characterized in that: The width of the material table (4) on both sides of the rotating platform (1) is 400mm-1500mm.

6. The multi-layer cloth annular vertical cooler according to claim 5, characterized in that: The width of the material platform (4) is 600mm-1000mm.

7. The multi-layer cloth annular vertical cooler according to claim 4, characterized in that: The side guard plate (2) includes a fixed plate (21) and a lower guard plate (22); the fixed plate (21) is fixed to the columns (6) on both sides of the rotating platform (1), and the side discharge port (c) is formed between the lower end of the fixed plate (21) and the material platform (4); the lower guard plate (22) is arranged on the fixed plate (21) in a manner that it can be rotated or moved up and down, and is used to control the amount of cold air sucked into the side discharge port (c).

8. The multi-layer cloth annular vertical cooler according to claim 4, characterized in that: The discharger (5) is a plough-type scraper structure and / or a rotary scraper, and a plurality of dischargers (5) are arranged at intervals around the material table (4) on both sides of the rotary platform (1).

9. The multi-layer cloth annular vertical cooler according to any one of claims 1 to 8, characterized in that: The included angle formed by the sliding support panels (31) on both sides of the air inlet device (3) is 15-85 degrees.

10. The multi-layer cloth annular vertical cooler according to claim 9, characterized in that: The cross section of the support panel (31) is a herringbone structure or a parabolic structure, and is fixedly connected to the support beam (11) on the rotating platform (1) via a vertical support (32).

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