A large block cleaning device for a discharge chute of an annular cooler and an annular cooler

Abstract

The present invention provides a large-block cleaning device for a discharge chute of an annular cooler and an annular cooler, comprising a discharge chute, a screening mechanism, and an inclined door box mechanism. The screening mechanism is fixed obliquely in the discharge chute. The screening mechanism is used to screen the particle size of pellets dumped from the annular cooler trolley. The discharge chute is provided with a through hole matching the inclined door box mechanism on the side wall near the low end of the screening mechanism. The through hole is arranged higher than the low end. The inclined door box mechanism is arranged on the outside of the discharge chute. The inclined door box mechanism includes an inclined door box and a door cover. The first open end of the inclined door box mechanism is fixedly connected to the outer wall of the discharge chute and communicates with the through hole. The second open end extends obliquely upward from the first open end and is cantilevered. The door cover can be connected to the second open end in an openable and closable manner. The present application well combines screening, aggregation, crushing, and removal, changes the traditional large-block cleaning method, solves the problem of traditional manual large-block cleaning, and improves crushing efficiency and safety.

Description

Technical Field

[0001] The invention relates to the technical field of annular coolers, in particular to an annular cooler discharge chute bulk cleaning device and annular cooler. Background Art

[0002] In the steelmaking pellet production process, the high-temperature pellets 50, which have been roasted into blocks, are continuously and evenly distributed to the rotating trolley of the ring cooler through the feed chute 60 in the rotary kiln. The ring cooler is driven to make uniform circular motion on a horizontal track. At the same time, the blower sends cold air through the air duct into the bellows system under the trolley. Under the action of positive pressure, the cold air passes through the upper grate of the trolley and enters the material layer of the hot pellets 50, fully exchanging heat with the high-temperature pellets 50. During the heat exchange process, the cooling air is heated and turned into high-temperature flue gas, which is discharged through the ring cooling hood on the upper part of the ring cooler trolley, thus completing the cooling process of the pellets 50. Figure 1 shown.

[0003] The discharge chute 10 is located in the unloading area of ​​the annular cooler. The annular cooler rotates once, unloading the cooled pellets 50 into the discharge chute 10. After being buffered by the discharge chute 10, the pellets 50 are discharged through the discharge port at the bottom of the discharge chute 10 onto the apron feeder 70 and the finished product conveyor belt below. However, during the cooling process, many pellets 50 become compacted due to secondary combustion, forming large lumps inside the annular cooler (pellets 50 with a diameter greater than 200 mm are considered abnormally large in the field). After being unloaded into the discharge chute 10, this causes blockage in the discharge chute 10, seriously affecting the normal operation of the equipment. This problem has become a pressing issue in the annular cooler discharge process.

[0004] To prevent large pellets from clogging, the current solution is to create an inspection door, or side door, on the side of the discharge chute 10. Once a blockage occurs, this door is manually opened, and the pellets are broken with a steel chisel before being discharged to the next process unit. This solution has the drawbacks of high maintenance costs and low efficiency in crushing large pellets. Furthermore, due to the high temperature and high dust levels at the discharge point, the operating environment is extremely harsh. Furthermore, this solution requires online cleaning. While manual cleaning and crushing of large pellets occurs, the annular cooler continues to operate normally, and pellets 50 are continuously discharged from the discharge area into the discharge chute 10. During the unloading process, the pellets 50 can easily break and ricochet into the inspection door, causing personal injury. Whether manually opening the inspection door or using the steel chisel to break the pellets, the pellets that break apart during the unloading process can easily injure personnel. This manual online operation violates safety regulations.

[0005] In view of this, it is necessary to propose a large block cleaning device for the discharge chute of an annular cooler and an annular cooler to solve or at least alleviate the above-mentioned defects. Summary of the Invention

[0006] The main purpose of the present invention is to provide a large block cleaning device for the discharge chute of an annular cooler and an annular cooler, so as to solve the problem that the existing technology uses a method of manually crushing large blocks with a steel chisel, which has low crushing efficiency, low safety factor and easy to cause personal injury.

[0007] To achieve the above-mentioned purpose, the present invention provides a discharge chute of an annular cooler with a grid device, comprising a discharge chute, a screening mechanism and an inclined door box mechanism; wherein,

[0008] The screening mechanism is fixed obliquely in the discharge chute, and is used to screen the particle size of the pellets dumped from the ring cooler trolley;

[0009] The discharge chute is provided with a through hole matching the inclined door box mechanism on the side wall near the low end of the screening mechanism, and the through hole is arranged higher than the low end;

[0010] The inclined door box mechanism is arranged on the outside of the discharge chute, and is used for allowing an external cleaning device to extend into the through hole to crush the pellets located on the screening mechanism. The inclined door box mechanism includes an inclined door box and a door cover; wherein,

[0011] The inclined door box includes a first open end and a second open end oppositely arranged along its own extension direction, the first open end is fixedly connected to the outer side wall of the discharge chute and communicates with the through hole, and the second open end extends obliquely upward from the first open end and is cantilevered;

[0012] The door cover is connected to the second opening end in an openable and closable manner.

[0013] Preferably, the screening mechanism includes a plurality of screening elements arranged at even intervals and a supporting mechanism for supporting the screening elements, and the supporting mechanism is fixed obliquely to the inner wall of the discharge chute so that the pellets dumped from the ring cooler trolley roll toward the inclined door box mechanism.

[0014] Preferably, the top surface of the screening element is formed with an arc-shaped concave surface.

[0015] Preferably, the inclined door box includes a first hinge seat and a door panel, the first hinge seat is fixedly connected to the outer wall of the discharge chute, and the top of the door panel is hinged to the first hinge seat.

[0016] Preferably, it also includes a door cover driving mechanism, which includes a driving cylinder and a second hinged seat, wherein the door panel area is larger than the cross-sectional area of ​​the second opening end, and the second hinged seat is fixed to the side of the door cover close to the discharge chute, and the driving cylinder is arranged on one side of the inclined door box, and the driving cylinder includes a driving end and a fixed end, and the fixed end is fixedly connected to the outer side wall of the discharge chute, and the driving end is connected to the second hinged seat, and the driving cylinder drives the door cover to be opened and closed around the hinge fulcrum of the first hinged seat on the second opening end.

[0017] Preferably, the driving cylinder includes a cylinder body and a third articulated seat, the third articulated seat is fixedly connected to the outer wall of the discharge chute, and the cylinder body is hinged to the third articulated seat so that the driving direction of the cylinder body is adjustable.

[0018] Preferably, the door panel is further provided with a sealing member surrounding the second opening end on a side close to the second opening end.

[0019] Preferably, the screening mechanism further comprises an anti-wear cover plate provided between two adjacent screening elements, and the anti-wear cover plate is covered on the surface of the supporting mechanism.

[0020] Preferably, the anti-wear cover plate is one or more of a welded U-shaped cover plate, a bent U-shaped cover plate and a vertical plate accumulation anti-wear cover plate.

[0021] The present invention also provides an annular cooler, comprising the above-mentioned large block cleaning device for the annular cooler discharge chute.

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

[0023] The present invention provides a large-block cleaning device for the discharge chute of a ring cooler and a ring cooler, comprising a discharge chute, a screening mechanism, and an inclined door box mechanism. The screening mechanism is fixed obliquely in the discharge chute. The screening mechanism is used to screen the particle size of the pellets dumped from the ring cooler trolley. The discharge chute is provided with a through hole matching the inclined door box mechanism on the side wall near the low end of the screening mechanism. The through hole is arranged higher than the low end. The inclined door box mechanism is arranged on the outside of the discharge chute. The inclined door box mechanism includes an inclined door box and a door cover. The first open end of the inclined door box mechanism is fixedly connected to the outer wall of the discharge chute and communicates with the through hole. The second open end extends obliquely upward from the first open end and is cantilevered. The door cover can be connected to the second open end in an openable and closable manner. The present application well combines screening, aggregation, and crushing. By using an external cleaning device and a door cover driving mechanism, the traditional large-block cleaning method is changed, the problem of traditional manual large-block cleaning is solved, and the crushing efficiency and safety are improved. In addition, the present application can realize online cleaning without affecting the normal operation of the ring cooler or causing harm to the cleaning personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0025] Figure 1 It is a schematic diagram of an annular cooler in the prior art;

[0026] Figure 2 A side view of a ring cooler in the prior art;

[0027] Figure 3 This is an application scenario diagram of the overall structure in one embodiment of the present invention;

[0028] Figure 4 A schematic diagram of the overall structure of an embodiment of the present invention;

[0029] Figure 5 It is a partial schematic diagram of a door cover driving mechanism in one embodiment of the present invention;

[0030] Figure 6 Schematic diagram of the structure of a screening mechanism in one embodiment of the present invention;

[0031] Figure 7 A side view of a screening mechanism in one embodiment of the present invention;

[0032] Figure 8 Schematic diagrams of three structures of a screening element in one embodiment of the present invention;

[0033] Figure 9 Schematic diagram of the structure of a door cover in one embodiment of the present invention.

[0034] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments.

[0035] Description of Figure Numbers:

[0036] 10. Discharge chute; 110. Discharge chute side door; 20. Screening mechanism; 210. Screening element; 220. Arc-shaped concave surface; 230. Support mechanism; 240. Anti-wear cover plate; 30. Inclined door box mechanism; 310. Inclined door box; 311. First opening end; 312. Second opening end; 320. Door cover; 321. Door panel; 322. First hinged seat; 330. Sealing element; 40. Door cover driving mechanism; 410. Driving cylinder; 411. Cylinder body; 412. Third hinged seat; 420. Second hinged seat; 50. Pellet ore; 60. Feeding chute; 70. Plate feeder; 80. External cleaning device. DETAILED DESCRIPTION

[0037] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0038] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0039] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0040] In addition, the descriptions of "first", "second", etc. in the present invention are for descriptive purposes only and should not be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0041] Please see the attached Figure 1-9 In one embodiment of the present invention, a large block cleaning device for a ring cooler discharge chute 10 is provided, comprising a discharge chute 10, a screening mechanism 20 and an inclined door box mechanism 30; wherein,

[0042] The screening mechanism 20 is fixed obliquely in the discharge chute 10, and the screening mechanism 20 is used to screen the particle size of the pellets 50 dumped from the ring cooler trolley; it can be understood that since the screening mechanism 20 is obliquely arranged inside the discharge chute 10, the screening mechanism 20 has a relatively high end (not marked in the figure) and a low end (not marked in the figure). The pellets 50 with smaller particle sizes, such as pellets 50 with a size less than 200 mm, are screened and fall to the discharge port at the bottom of the discharge chute 10, and then discharged to the plate feeder 70 and the finished product belt below. The pellets 50 with a size greater than 200 mm (considered in this field to be large pellets 50, which are abnormal blocks) remain on the screening mechanism 20 and roll from the high end to the low end of the screening mechanism 20.

[0043] The discharge chute 10 is provided with a through hole (not shown) on the side wall near the lower end of the screening mechanism 20, which matches the inclined door box mechanism 30. That is, the discharge chute 10 is provided with the through hole on the side wall in the rolling direction of the pellets 50. The through hole is arranged higher than the lower end. It should be noted that the through hole is arranged higher than the lower end of the screening mechanism 20, so that the pellets 50 remaining on the screening mechanism 20 can roll along the screening mechanism 20 and roll into the inclined door box mechanism 30, and then flow back to the lower end of the screening mechanism 20 through the inclined door box mechanism 30;

[0044] The inclined door box mechanism 30 is arranged on the outside of the discharge chute 10. The inclined door box mechanism 30 extends outward from the discharge chute 10 to a certain length to form a protective buffer chamber. The inclined door box mechanism 30 is used for allowing an external cleaning device 80 to extend into the through hole to crush the pellets 50 located on the screening mechanism 20. The external cleaning device 80 can be a traditional steel chisel or a special crushing rod, or a crushing device of a mechanical trolley, such as Figure 3 As shown, the large pellets 50 are crushed by manipulating the mechanical trolley. The inclined door box mechanism 30 includes an inclined door box 310 and a door cover 320; wherein,

[0045] The inclined door box 310 includes a first opening end 311 and a second opening end 312 arranged opposite to each other along its own extension direction. The first opening end 311 is fixedly connected to the outer wall of the discharge chute 10 and is connected to the through hole. The second opening end 312 extends obliquely upward from the first opening end 311 and is cantilevered. The door cover 320 is connected to the second opening end 312 in an openable and closable manner.

[0046] In the present application, the particle size of the pellets 50 dumped from the ring cooler trolley is screened by fixing the screening mechanism 20 obliquely in the discharge chute 10. The inclined door box mechanism 30 is arranged on the outside of the discharge chute 10. The inclined door box mechanism 30 is used for the external cleaning device 80 to extend into the through hole to crush the pellets 50 located on the screening mechanism 20. The inclined door box mechanism 30 includes an inclined door box 310 and a door cover 320. The present application well combines screening, aggregation, crushing and exclusion, changes the traditional large-block cleaning method, and solves the problem of traditional manual large-block cleaning. In addition, the present application can realize online cleaning without affecting the normal operation of the ring cooler or causing harm to the cleaning personnel.

[0047] As a preferred embodiment of the present invention, the screening mechanism 20 includes a plurality of evenly spaced screening elements 210 and a support mechanism 230 for supporting the screening elements 210. The support mechanism 230 is fixed obliquely to the inner wall of the discharge chute 10 so that the pellets 50 dumped from the ring cooler trolley roll toward the inclined door box mechanism 30. The spacing between the screening elements 210 determines the size of the pellets 50 screened. Therefore, the spacing between the screening elements 210 can be set to 200 mm, or those skilled in the art can also set other sizes according to the setting. The screening elements 210 can be selected from one of rail steel, I-beam, or H-beam, which has the advantages of being easy to obtain in production, light weight, easy to install, and having excellent structural strength. By providing the support mechanism 230, which is fixedly connected to the inner wall of the discharge chute 10, the overall strength of the screening mechanism 20 can be greatly enhanced to meet the long-term impact of the pellets 50 from top to bottom.

[0048] As a preferred embodiment, the top surface of the screening element 210 is formed with an arc-shaped concave surface 220. It is understood that after the ring cooler trolley enters the unloading area, the unloaded material falls on the screening element 210 for screening, and the pellets 50 with larger particle size roll from the high end to the low end along the surface of the screening element 210. When the top surface of the screening element 210 is formed with an arc-shaped concave surface 220, for example, please refer to the attached Figure 7 The pellets 50 will be retained at the lowest position of the arc-shaped concave surface 220, thereby facilitating the crushing of the pellets 50 retained at this position, thereby improving the stability and accuracy of the crushing.

[0049] Furthermore, the angled door box 310 includes a first hinged seat 322 and a door panel 321. It should be noted that the hinged seat is a functional component well known to those skilled in the art. The first hinged seat 322 is fixedly connected to the outer wall of the discharge chute 10. The fixed connection may be welding, integral molding, or other fixed connection methods. The top of the door panel 321 is hingedly connected to the first hinged seat 322. The door panel 321 can rotate about the hinge fulcrum to open or close it. Specifically, the door panel 321 can be opened or closed manually or by the door cover drive mechanism 40 described below.

[0050] As a preferred embodiment, it also includes a door cover driving mechanism 40. It can be understood that the door cover driving mechanism 40 is used to drive the door panel 321 to be opened and closed and is set on the second opening end 312. The door cover driving mechanism 40 includes a driving cylinder 410 and a second hinge seat 420, wherein the area of ​​the door panel 321 is larger than the cross-sectional area of ​​the second opening end 312. It should be noted that in order to facilitate the installation of the second hinge seat 420, the area of ​​the door panel 321 of this embodiment is larger than the area of ​​the second opening end 312. The second hinge seat 420 can be installed on the side of the door panel 321, staggered with the second opening end 312. The second hinged seat 420 is fixed to the side of the door cover 320 close to the discharge chute 10. The second hinged seat 420 and the driving cylinder 410 are matched in position. The driving cylinder 410 is provided on one side of the inclined door box 310. The driving cylinder 410 includes a driving end (not shown) and a fixed end (not shown). The fixed end is fixedly connected to the outer wall of the discharge chute 10, and the driving end is connected to the second hinged seat 420. The driving cylinder 410 drives the door cover 320 to be opened and closed around the hinge fulcrum of the first hinged seat 322 and is provided on the second opening end 312. Through the driving action of the driving cylinder 410, the opening or closing of the door cover 320 can be controlled by controlling the extension and contraction of the driving end of the driving cylinder 410, thereby improving efficiency and reducing manpower input.

[0051] As a preferred embodiment, the driving cylinder 410 includes a cylinder body 411 and a third hinge seat 412. The third hinge seat 412 is fixedly connected to the outer wall of the discharge chute 10. The cylinder body 411 and the third hinge seat 412 are hingedly connected to each other so that the driving direction of the cylinder body 411 is adjustable. In this embodiment, by configuring the driving cylinder 410 in the form of the cylinder body 411 and the third hinge seat 412, and hingedly connecting the cylinder body 411 and the third hinge seat 412, the position of the cylinder body 411 can be adjusted about the hinge point, thereby adjusting the driving direction of the cylinder body 411.

[0052] Furthermore, the door panel 321 is provided with a sealing member 330 surrounding the second opening end 312 on one side thereof near the second opening end 312. To prevent high-temperature smoke from escaping from the inclined door box 310, in this embodiment, the door panel 321 is provided with a sealing member 330 surrounding the second opening end 312 on one side thereof near the second opening end 312. The sealing member 330, for example, is a rubber seal, and the elastic deformation of the rubber seal provides a good sealing effect.

[0053] As a preferred embodiment, the screening mechanism 20 further includes a wear-resistant cover plate 240 disposed between two adjacent screening elements 210. The wear-resistant cover plate 240 covers the surface of the support mechanism 230. It should be noted that, since the pellets 50 cause long-term erosion and wear on the support mechanism 230 during unloading, to extend its service life, the wear-resistant cover plate 240 is added between adjacent screening elements 210 to protect the support mechanism 230 in the gap between them. The wear-resistant cover plate 240 can be fixed to the support mechanism 230 by welding. The support mechanism 230 can be made of common industrial materials such as rail steel, I-beams, and H-beams.

[0054] For further information, please see the attached Figure 8 The anti-wear cover plate 240 is one or more of a welded U-shaped cover plate, a bent U-shaped cover plate and a vertical plate accumulation anti-wear cover plate 240. It is worth noting that Figure 8 From left to right in the middle are a welded U-shaped cover, a bent U-shaped cover and a vertical plate accumulation and anti-wear cover 240, among which the welded U-shaped cover is made of three rectangular steel plates welded into a U-shaped cover structure, which is covered on the support mechanism 230; the bent U-shaped cover is a prefabricated one-piece U-shaped cover, which is covered on the support mechanism 230; the vertical plate accumulation and anti-wear cover 240 is made of two vertical rectangular steel plates arranged on both sides of the support mechanism 230, and its top is higher than the top of the support mechanism 230, so that the protruding parts of the two vertical rectangular steel plates and the top of the support mechanism 230 are combined to form a receiving groove with an open top, so that part of the pellets 50 fall into the receiving groove during the initial unloading, and when the pellets 50 fill the receiving groove, a layer of accumulation material is formed to protect the support mechanism 230 from subsequent erosion and wear. The above three cover structures can be selected by technicians in this field according to specific needs.

[0055] The above are only preferred embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention description and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A device for cleaning large pieces of material from the discharge chute of an annular cooler, characterized in that: It includes a discharge chute, a screening mechanism and an inclined door box mechanism; among which, The screening mechanism is fixed obliquely in the discharge chute, and is used to screen the particle size of the pellets dumped from the ring cooler trolley; The discharge chute is provided with a through hole matching the inclined door box mechanism on the side wall near the low end of the screening mechanism, and the through hole is arranged higher than the low end; The inclined door box mechanism is arranged on the outside of the discharge chute, and is used for allowing an external cleaning device to extend into the through hole to crush the pellets located on the screening mechanism. The inclined door box mechanism includes an inclined door box and a door cover; wherein, The inclined door box includes a first open end and a second open end oppositely arranged along its own extension direction, the first open end is fixedly connected to the outer side wall of the discharge chute and communicates with the through hole, and the second open end extends obliquely upward from the first open end and is cantilevered; The door cover is connected to the second opening end in an openable and closable manner.

2. The device for cleaning large pieces of material from the discharge chute of an annular cooler according to claim 1, characterized in that: The screening mechanism includes a plurality of screening elements arranged at even intervals and a support mechanism for supporting the screening elements. The support mechanism is fixed obliquely to the inner wall of the discharge chute so that the pellets dumped from the ring cooler trolley roll toward the inclined door box mechanism.

3. The device for cleaning large pieces of material from the discharge chute of an annular cooler according to claim 2, characterized in that: The top surface of the screening element is formed with an arc-shaped concave surface.

4. The device for cleaning large pieces of material from the discharge chute of an annular cooler according to claim 1, characterized in that: The inclined door box includes a first hinge seat and a door panel, the first hinge seat is fixedly connected to the outer wall of the discharge chute, and the top of the door panel is hinged to the first hinge seat.

5. The device for cleaning large pieces of material from the discharge chute of an annular cooler according to claim 4, characterized in that: It also includes a door cover driving mechanism, which includes a driving cylinder and a second hinge seat, wherein the door panel area is larger than the cross-sectional area of ​​the second opening end, and the second hinge seat is fixed to the side of the door cover close to the discharge chute. The driving cylinder is arranged on one side of the inclined door box, and the driving cylinder includes a driving end and a fixed end, the fixed end is fixedly connected to the outer side wall of the discharge chute, and the driving end is connected to the second hinge seat. The driving cylinder drives the door cover to be opened and closed around the hinge fulcrum of the first hinge seat on the second opening end.

6. The device for cleaning large pieces of material from the discharge chute of an annular cooler according to claim 5, characterized in that: The driving cylinder includes a cylinder body and a third articulated seat. The third articulated seat is fixedly connected to the outer wall of the discharge chute. The cylinder body is articulated to the third articulated seat so that the driving direction of the cylinder body is adjustable.

7. The device for cleaning large pieces of material from the discharge chute of an annular cooler according to claim 4, characterized in that: The door panel is further provided with a sealing member surrounding the second opening end on one side close to the second opening end.

8. The device for cleaning large pieces of material from the discharge chute of an annular cooler according to claim 2, characterized in that: The screening mechanism further includes an anti-wear cover plate provided between two adjacent screening elements, and the anti-wear cover plate is coated on the surface of the supporting mechanism.

9. The device for cleaning large pieces of material from the discharge chute of an annular cooler according to claim 8, characterized in that: The anti-wear cover plate is one or more of a welded U-shaped cover plate, a bent U-shaped cover plate and a vertical plate accumulation anti-wear cover plate.

10. A ring cooler, characterized in that: It comprises the large block cleaning device for the discharge chute of the ring cooler as described in any one of claims 1-9.

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