Blanking buffer device for weighing hopper of blast furnace

Abstract

The utility model discloses a blanking buffer device for a weighing hopper of a blast furnace, which comprises two protective plates arranged on two sides of a sintering feeding belt, buffer mechanisms are arranged on the protective plates, each buffer mechanism comprises a buffer plate, a rotating mechanism and a lifting mechanism, and the buffer plate is positioned between the two protective plates; the buffer plates of the two buffer mechanisms are arranged in a staggered manner; the rotating mechanism drives the buffer plate to rotate so that the buffer plate can be in a vertical posture or a horizontal posture; when the buffer plates are in the vertical posture, the distance between every two adjacent buffer plates is larger than the thickness of the buffer plates. The buffer plate, in the vertical posture, of any buffer mechanism can pass through the gap between the buffer plates, in the horizontal posture, of the other buffer mechanism. By arranging the two buffer mechanisms, materials discharged from the blanking port of the weighing hopper of the blast furnace can be stably and downwards guided to the sintering feeding belt, so that the impact of the materials on the sintering feeding belt is reduced, the situations that the materials are splashed and separated and dust is raised are avoided, and meanwhile, the probability that the belts are scratched by foreign matters is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of blast furnace supporting equipment, in particular to a blast furnace weighing hopper material discharge buffer device. Background Art

[0002] During the blast furnace smelting process, sintered ore, lump ore, coke and other furnace materials need to be screened and filtered through a vibrating screen, then placed in a weighing bucket for batch measurement, unloaded onto the sintering feeder belt for transportation, and finally sent into the blast furnace via a blast furnace loading trolley.

[0003] In order to prevent the material discharged from the weighing bucket from getting stuck on the sintering feeder belt, the lower end of the weighing bucket is generally designed to maintain a certain height from the upper end of the sintering feeder belt. However, when unloading, the material discharged from the weighing bucket has a high gravitational potential energy. When it hits the sintering feeder belt, there may be problems such as material splashing, separation from the sintering feeder belt, and dust generation. In addition, if the material from the raw material plant is mixed with foreign matter, after the foreign matter enters the weighing bucket, it may scratch the belt when it falls from the weighing bucket to the sintering feeder belt. Once the belt is scratched, the blast furnace will definitely stop, causing great production and safety hazards.

[0004] It should be noted that the above contents belong to the technical knowledge of the inventor and do not necessarily constitute prior art. Utility Model Content

[0005] Based on this, it is necessary to provide a blast furnace weighing bucket unloading buffer device to address the above technical problems.

[0006] In order to achieve the above-mentioned purpose, the utility model provides a blast furnace weighing bucket unloading buffer device, comprising two guard plates arranged on both sides of a sintering feeding belt, wherein the guard plates are each provided with a buffer mechanism, the guard plates correspond to the buffer mechanisms one by one, the buffer mechanism comprises a plurality of buffer plates arranged at intervals, a rotating mechanism for driving the buffer plates to rotate and a lifting mechanism for driving the buffer plates to lift and lower, and the buffer plates are located between the two guard plates; the buffer plates of the two buffer mechanisms are arranged alternately; the rotating mechanism drives the buffer plates to rotate so that the buffer plates can be in a vertical posture or a horizontal posture; when the buffer plates are in a vertical posture, the spacing between two adjacent buffer plates is greater than the thickness of the buffer plates; the buffer plate in a vertical posture of any buffer mechanism can pass through the gap between the buffer plates in a horizontal posture of the other buffer mechanism.

[0007] Preferably, the lifting mechanism includes a first linear actuator and a lifting frame, the first linear actuator is fixedly connected to the guard plate, and the lifting frame is fixedly installed at the output end of the first linear actuator; the rotating mechanism includes a second linear actuator, a gear, and a rack, the first linear actuator is fixedly connected to the guard plate, the second linear actuator is fixedly installed on the lifting frame, the output end of the second linear actuator is connected to the rack, and a movable opening corresponding to the buffer plate of the corresponding buffer mechanism is opened on the guard plate, a first fixed shaft is fixed at one end of the buffer plate, the first fixed shaft is rotatably connected to the lifting frame after passing through the movable opening, a gear is installed on the first fixed shaft, and the gear is meshingly connected with the rack.

[0008] Preferably, the buffer mechanism also includes a vertical guide rail and a vertical slider, a second fixed shaft coaxially arranged with the first fixed shaft is fixed to the end of the buffer plate away from the first fixed shaft, a vertical guide rail corresponding one to one with the second fixed shaft is fixed to the guard plate away from the lifting mechanism, a vertical slider is slidably installed in the vertical guide rail, and the second fixed shaft is rotatably installed on the vertical slider.

[0009] Preferably, the rotating mechanism further comprises a horizontal guide rail and a horizontal slider, the horizontal guide rail is fixedly mounted on the lifting frame, a horizontal slider is slidably mounted on the horizontal guide rail, and the horizontal slider is fixedly connected to the rack.

[0010] Preferably, a push plate is fixed on the rack, and the output end of the second linear actuator is fixedly connected to the push plate.

[0011] Preferably, the lifting mechanism further comprises a guide sleeve and a guide rod, the guide sleeve is fixedly mounted on the guard plate, the guide rod is slidably inserted into the guide sleeve, and the upper end of the guide rod is fixedly connected to the lifting frame.

[0012] The beneficial effects of this technical solution are as follows: By arranging two buffer mechanisms, this device can smoothly guide the materials discharged from the discharge port of the blast furnace weighing bucket downward to the sintering feeding belt, reduce the impact of the materials on the sintering feeding belt, avoid the splashing and dust generation of the materials, and reduce the probability of foreign objects scratching the belt. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the structure of an embodiment of the utility model;

[0014] Figure 2 for Figure 1 A partial enlarged schematic diagram of the rotating mechanism;

[0015] Figure 3 for Figure 1 Sectional view along line AA;

[0016] Figure 4 for Figure 1 Sectional view along line BB;

[0017] Figure 5 for Figure 3 Another state of Figure 1 ;

[0018] Figure 6 for Figure 3 Another state of Figure 2 ;

[0019] Figure 7 It is a left side view of an embodiment of the utility model;

[0020] In the figure, 1, guard plate; 11, movable opening; 2, buffer mechanism; 21, buffer plate; 22, rotating mechanism; 221, second linear actuator; 222, gear; 223, rack; 224, horizontal guide rail; 225, horizontal slider; 226, push plate; 23, lifting mechanism; 231, first linear actuator; 232, lifting frame; 233, guide sleeve; 234, guide rod; 24, first fixed axis; 25, vertical guide rail; 26, vertical slider; 27, second fixed axis; 3, sintering feed belt; 4, blast furnace weighing bucket. DETAILED DESCRIPTION

[0021] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0022] See also Figures 1 to 7 The embodiment of the present application provides a blast furnace weighing bucket unloading buffer device, comprising two guard plates 1 arranged on both sides of a sintering feeding belt 3, and a buffer mechanism 2 is provided on each guard plate 1, and the guard plates 1 correspond to the buffer mechanism 2 one by one, and the buffer mechanism 2 comprises a plurality of buffer plates 21 arranged at intervals, a rotating mechanism 22 for driving the buffer plates 21 to rotate, and a lifting mechanism 23 for driving the buffer plates 21 to rise and fall, and the buffer plates 21 are located between the two guard plates 1; the buffer plates 21 of the two buffer mechanisms 2 are arranged alternately; the rotating mechanism 22 drives the buffer plates 21 to rotate so that the buffer plates 21 can be in a vertical posture or a horizontal posture; when the buffer plates 21 are in a vertical posture, the spacing between two adjacent buffer plates 21 is greater than the thickness of the buffer plates 21; the buffer plate 21 in a vertical posture of any buffer mechanism 2 can pass through the gap between the buffer plates 21 in a horizontal posture of another buffer mechanism 2.

[0023] The lifting mechanism 23 includes a first linear actuator 231 and a lifting frame 232. The first linear actuator 231 uses a hydraulic cylinder. In other embodiments, a device capable of realizing linear motion, such as a cylinder or an electric cylinder, can also be used. The first linear actuator is fixedly connected to the guard plate 1, and the lifting frame 232 is fixedly installed at the output end of the first linear actuator 231; the rotating mechanism 22 includes a second linear actuator 221, a gear 222, and a rack 223. The first linear actuator is fixedly connected to the guard plate 1, and the second linear actuator 221 uses a hydraulic cylinder. In other embodiments, a device capable of realizing linear motion, such as a gas cylinder or an electric cylinder, can also be used. In the embodiment, a device capable of realizing linear motion, such as a pneumatic cylinder or an electric cylinder, may also be selected. The second linear actuator 221 is fixedly mounted on the lifting frame 232. The output end of the second linear actuator 221 is connected to the rack 223. The guard plate 1 is provided with an active opening 11 corresponding to the buffer plate 21 of the corresponding buffer mechanism 2. A first fixed shaft 24 is fixed to one end of the buffer plate 21. The first fixed shaft 24 passes through the active opening 11 and is rotatably connected to the lifting frame 232 through a bearing. A gear 222 is mounted on the first fixed shaft 24, and the gear 222 is meshed with the rack 223. The rack 223 is driven to move a preset distance by the second linear actuator 221, and the gear 222 drives the gear 222, the first fixed shaft 24, and the buffer plate 21 to rotate 90 degrees, so that the buffer plate 21 switches between a vertical posture and a horizontal posture.

[0024] In order to ensure smooth lifting of the buffer plate 21, the buffer mechanism 2 further includes a vertical guide rail 25 and a vertical slider 26. A second fixed shaft 27 coaxially arranged with the first fixed shaft 24 is fixed to one end of the buffer plate 21 away from the first fixed shaft 24. A vertical guide rail 25 corresponding to the second fixed shaft 27 is fixed to the guard plate 1 on the side away from the lifting mechanism 23. A vertical slider 26 is slidably installed in the vertical guide rail 25, and the second fixed shaft 27 is rotatably installed on the vertical slider 26. The vertical guide rail 25 and the vertical slider 26 support and guide the second fixed shaft 27 and the buffer plate 21, which can prevent the buffer plate 21 from tipping over and being bent, and improve the stability of the buffer plate 21 in lifting and lowering materials.

[0025] In order to facilitate the support of the rack 223 so that the rack 223 can move smoothly and linearly, the rotating mechanism 22 also includes a horizontal guide rail 224 and a horizontal slider 225. The horizontal guide rail 224 is fixedly installed on the lifting frame 232, and the horizontal slider 225 is slidably installed on the horizontal guide rail 224. The horizontal slider 225 is fixedly connected to the rack 223.

[0026] In order to facilitate the second linear actuator 221 to drive the rack 223 to move, a push plate 226 is fixed on the rack 223 , and the output end of the second linear actuator 221 is fixedly connected to the push plate 226 .

[0027] In order to make the first linear actuator 231 drive the lifting frame 232 to lift smoothly, the lifting mechanism 23 is provided to further include a guide sleeve 233 and a guide rod 234. The guide sleeve 233 is fixedly mounted on the guard plate 1, and the guide rod 234 is slidably inserted in the guide sleeve 233. The upper end of the guide rod 234 is fixedly connected to the lifting frame 232. The guide sleeve 233 and the guide rod 234 are both provided in pairs, which can guide the lifting frame 232 so that the lifting frame 232 can be lifted and lowered smoothly.

[0028] Working principle:

[0029] This device is set just below the discharge port of the blast furnace weighing bucket 4. When discharging materials from the discharge port of the blast furnace weighing bucket 4, please refer to Figure 5 , each buffer plate 21 of one buffer mechanism 2 is in a horizontal posture and is located at the highest point, close to the discharge port of the blast furnace weighing bucket 4;

[0030] When the material is discharged from the discharge port of the blast furnace weighing bucket 4, the material will fall on the buffer plate 21 at the highest point in a horizontal posture. Figure 6 , the first linear actuator 231 drives the lifting frame 232 to descend, so that the buffer plate 21 drives the material to descend close to the sintering feeding belt 3. During this period, the buffer plate 21 of the other buffer mechanism 2 rises in a vertical posture, passes through the gap of the buffer plate 21 of the other buffer mechanism 2 in a horizontal posture, and then moves to the highest point. Figure 3 and Figure 4 As shown;

[0031] Then the rotating mechanism 22 drives the buffer plate 21 in the vertical posture to rotate to the horizontal posture to receive the materials, and the buffer plate 21 close to the sintering feeding belt 3 is driven by the rotating mechanism 22 to rotate to the vertical posture to discharge the materials, so that the materials fall on the sintering feeding belt 3 with lower gravitational potential energy;

[0032] Then, the above steps are repeated, so that the buffer plates 21 of the two buffer mechanisms 2 alternately receive materials at a high point and discharge materials at a low point, thereby reducing the impact of materials on the sintering feeder belt 3 and avoiding the splashing and separation of materials and the generation of dust; at the same time, the guard plate 1 can block the material splashing outward and avoid the material from detaching from the sintering feeder belt 3; when foreign matter is present, the foreign matter is received by the buffer plate 21 and transported upward, which can reduce the gravitational potential energy of the foreign matter, and can greatly reduce the probability of the sintering feeder belt 3 being scratched due to the impact of foreign matter on the sintering feeder belt 3.

[0033] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0034] The above embodiments only express several implementation methods of the utility model, and the descriptions are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

[0035] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0036] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0037] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A blast furnace weighing hopper unloading buffer device, comprising two guard plates (1) arranged on both sides of a sintering feeding belt (3), characterized in that: The guard plates (1) are each provided with a buffer mechanism (2), the guard plates (1) and the buffer mechanisms (2) corresponding one to one, the buffer mechanisms (2) comprising a plurality of buffer plates (21) arranged at intervals, a rotation mechanism (22) for driving the buffer plates (21) to rotate, and a lifting mechanism (23) for driving the buffer plates (21) to rise and fall, the buffer plate (21) being located between two guard plates (1); the buffer plates (21) of the two buffer mechanisms (2) are arranged alternately; the rotation mechanism (22) drives the buffer plates (21) to rotate so that the buffer plates (21) can be in a vertical posture or a horizontal posture; when the buffer plates (21) are in a vertical posture, the spacing between two adjacent buffer plates (21) is greater than the thickness of the buffer plates (21); the buffer plate (21) in a vertical posture of any buffer mechanism (2) can pass through the gap between the buffer plates (21) in a horizontal posture of another buffer mechanism (2).

2. The blast furnace weighing hopper unloading buffer device according to claim 1, characterized in that: The lifting mechanism (23) comprises a first linear actuator (231) and a lifting frame (232), wherein the first linear actuator is fixedly connected to the guard plate (1), and the lifting frame (232) is fixedly mounted on the output end of the first linear actuator (231); the rotating mechanism (22) comprises a second linear actuator (221), a gear (222), and a rack (223), wherein the first linear actuator is fixedly connected to the guard plate (1), and the second linear actuator (221) is fixedly mounted on the lifting frame (232). ), the output end of the second linear actuator (221) is connected to the rack (223), the guard plate (1) is provided with an active opening (11) corresponding to the buffer plate (21) of the corresponding buffer mechanism (2), a first fixed shaft (24) is fixed to one end of the buffer plate (21), the first fixed shaft (24) passes through the active opening (11) and is rotatably connected to the lifting frame (232), the first fixed shaft (24) is mounted with a gear (222), and the gear (222) is meshingly connected to the rack (223).

3. The blast furnace weighing hopper unloading buffer device according to claim 2, characterized in that: The buffer mechanism (2) further comprises a vertical guide rail (25) and a vertical slider (26); a second fixed shaft (27) coaxially arranged with the first fixed shaft (24) is fixed to one end of the buffer plate (21) away from the first fixed shaft (24); a vertical guide rail (25) corresponding to the second fixed shaft (27) is fixed to the guard plate (1) on the side away from the lifting mechanism (23); a vertical slider (26) is slidably mounted in the vertical guide rail (25); and the second fixed shaft (27) is rotatably mounted on the vertical slider (26).

4. The blast furnace weighing hopper unloading buffer device according to claim 2, characterized in that: The rotating mechanism (22) further comprises a horizontal guide rail (224) and a horizontal slider (225); the horizontal guide rail (224) is fixedly mounted on the lifting frame (232); the horizontal slider (225) is slidably mounted on the horizontal guide rail (224); and the horizontal slider (225) is fixedly connected to the rack (223).

5. The blast furnace weighing hopper unloading buffer device according to claim 4, characterized in that: A push plate (226) is fixed on the rack (223), and the output end of the second linear actuator (221) is fixedly connected to the push plate (226).

6. The blast furnace weighing hopper unloading buffer device according to claim 2, characterized in that: The lifting mechanism (23) further comprises a guide sleeve (233) and a guide rod (234); the guide sleeve (233) is fixedly mounted on the guard plate (1); the guide rod (234) is slidably inserted into the guide sleeve (233); and the upper end of the guide rod (234) is fixedly connected to the lifting frame (232).

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