Device and method for quickly replacing buffer tank of dewatering drum

Abstract

The invention provides a device and a method for quickly replacing a dewatering drum buffer tank. The device comprises a steel rail, a trolley and an electric hoist, the steel rail is detachably mounted in the dewatering drum and is positioned above all the buffer tanks in the dewatering drum; the trolley is mounted on the steel rail in a sliding manner; a lifting lug structure is mounted at the top of the buffer tank; the front part of the trolley is fixedly provided with a trolley hook, and the side surface is fixedly provided with a trolley hook; the trolley lifting hook is used for being connected with the lifting lug structure through a steel wire rope, so that the buffer box is connected with the trolley; and the electric hoist is used for being connected with the trolley hook through a steel wire rope, so that the trolley and the buffer box which are connected together are pulled out of the dewatering rotary drum along the steel rail. According to the technical scheme, the problem that an existing water granulated slag buffer tank is inconvenient to disassemble and overhaul is solved.

Description

Technical Field

[0001] The invention relates to the technical field of blast furnace smelting, and in particular to a device and method for quickly replacing a dehydration drum buffer box. Background Art

[0002] The slag produced as a byproduct of the blast furnace ironmaking process is usually quenched into slag by slag scouring equipment. The slag treatment equipment uses a dewatering drum, and the internal structure of the dewatering drum is a slag distributor, a belt conveyor, a filter and a slag buffer box. After a period of production, the inner wall of the slag buffer box will be scaled, which seriously affects the work efficiency. At this time, it is necessary to stop using the dewatering drum (during which the red slag is discharged into the accident dry slag pit), and unload the slag buffer box from the dewatering drum for manual cleaning of large scale blocks. When unloading the slag buffer box, tools such as wire ropes, hand winches and cranes are usually used. At the same time, due to the small working space in the dewatering drum and the heavy weight of the slag buffer box (nearly 2 tons), the disassembly time is often long, resulting in extended maintenance time. During this period, red slag is discharged for a long time, resulting in a low labor rate of workers during the maintenance period and an increase in the cost of discharging dry slag. Summary of the invention

[0003] Based on the above technical problem that the existing water-slag buffer box is inconvenient to disassemble and repair, a device and method for quickly replacing the dehydration drum buffer box are provided.

[0004] The technical means adopted by the present invention are as follows:

[0005] A device for quickly replacing a dehydration drum buffer box, comprising a rail, a trolley and an electric hoist;

[0006] The steel rail is detachably mounted inside the dehydration drum and is located above all buffer boxes inside the dehydration drum; the trolley is slidably mounted on the steel rail and can slide along the steel rail;

[0007] A lifting ear structure is installed on the top of the buffer box; a trolley hook is fixedly installed on the front of the trolley, and a trolley hook is fixedly installed on the side; the trolley hook is used to connect with the lifting ear structure through a wire rope, so that the buffer box is connected to the trolley; the electric hoist is used to connect with the trolley hook through a wire rope, so as to pull the connected trolley and the buffer box along the rail to the outside of the dewatering drum.

[0008] Furthermore, the rails are installed inside the dewatering drum by bolts.

[0009] Furthermore, one end of the steel rail extends into the dehydration drum, and the other end extends out of the dehydration drum.

[0010] Furthermore, supporting wheels are respectively installed at the four corners of the bottom of the trolley, and the trolley is slidably installed on the rail through the supporting wheels.

[0011] The present invention also provides a method for quickly replacing a dehydration drum buffer box, which uses the above-mentioned device for quickly replacing a dehydration drum buffer box, and specifically includes the following contents:

[0012] First, disassemble the water-slag distributor connected to the granulation tower and the belt installed in the dewatering drum, then extend one end of the rail into the dewatering drum and install it;

[0013] When the buffer tank needs to be disassembled for maintenance:

[0014] (1) Push the trolley along the rail into the dewatering drum and place it above the buffer box to be transferred. Use a wire rope to connect the trolley hook on the side of the trolley and the ear structure on the buffer box so that the buffer box to be transferred is hung under the trolley;

[0015] (2) Use a wire rope to connect the trolley hook and the electric hoist at the front of the trolley, control the operation of the electric hoist, and pull the connected trolley and the buffer box along the rail to the outside of the dehydration drum;

[0016] (3) Remove the wire rope connected to the lifting lug structure of the buffer box, separate the trolley from the buffer box, lift the buffer box to the descaling operation position by a crane, and then clean the buffer box;

[0017] When the buffer box needs to be installed in the dehydration drum:

[0018] (1) Use a crane to lift the buffer box to the bottom of the rail outside the dewatering drum, place a trolley on the rail, and use a wire rope to connect the trolley hook on the side of the trolley with the lug structure on the buffer box to be transferred, so that the buffer box to be transferred is hung under the trolley;

[0019] (2) Push the trolley to drive the buffer box along the rail into the dehydration drum until the buffer box is at the designated installation position, remove the wire rope connected to the lifting lug structure of the buffer box, separate the trolley from the buffer box, and then install the buffer box;

[0020] After completing the disassembly, inspection or installation of the buffer box, control the electric hoist to pull the trolley out of the dewatering drum, and then remove the rails.

[0021] Compared with the prior art, the present invention has the following advantages:

[0022] The device and method for quickly replacing the dehydration drum buffer box provided by the present invention have a structure that is easy to manufacture and install, has low cost, can improve work efficiency, reduce labor costs, and simultaneously reduce the cost of discharging dry slag and the cost of using large cranes, thereby reducing ironmaking costs.

[0023] Based on the above reasons, the present invention can be widely promoted in the field of blast furnace smelting. 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 drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0025] Figure 1 This is a schematic diagram of the slag dehydration process in the blast furnace ironmaking process.

[0026] Figure 2 It is a schematic diagram of the process of disassembling the buffer box in the prior art.

[0027] Figure 3 This is a schematic diagram of the structure of the device for quickly replacing the dehydration drum buffer box according to the present invention.

[0028] Figure 4 This is a schematic diagram of the trolley and the rail structure of the present invention.

[0029] Figure 5 This is a schematic diagram of the top view of the structure of the device for quickly replacing the dehydration drum buffer box of the present invention.

[0030] Figure 6 This is a schematic diagram of disassembling a buffer box using the method for quickly replacing a dehydration drum buffer box of the present invention.

[0031] Figure 7 A schematic diagram of installing a buffer box using the method for quickly replacing a dehydration drum buffer box of the present invention.

[0032] In the figure: 1. Granulation tower; 2. Water-slag distributor; 3. Dewatering drum; 4. Buffer box; 5. Belt; 6. Hook; 7. Round steel; 8. Hand chain hoist; 9. Rail; 10. Trolley; 11. Electric hoist; 12. Trolley hook; 13. Trolley hook. DETAILED DESCRIPTION

[0033] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0034] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0036] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps described in these embodiments do not limit the scope of the present invention. At the same time, it should be clear that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0037] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention: the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0038] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below their position devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0039] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0040] Example 1

[0041] like Figure 3-5 As shown, the present invention provides a device for quickly replacing a dehydration drum buffer box, comprising a rail 9, a trolley 10 and an electric hoist 11;

[0042] The steel rail 9 is detachably mounted inside the dehydration drum and is located above all buffer boxes 4 inside the dehydration drum; the trolley 10 is slidably mounted on the steel rail 9 and can slide along the steel rail 9;

[0043] A lifting ear structure is installed on the top of the buffer box 4; a trolley hook 12 is fixedly installed on the front of the trolley 10, and a trolley hook 13 is fixedly installed on the side; the trolley hook 13 is used to connect with the lifting ear structure through a wire rope, so that the buffer box 4 is connected to the trolley 10; the electric hoist 11 is used to connect with the trolley hook 12 through a wire rope, so as to pull the connected trolley 10 and the buffer box 4 along the steel rail 9 to the outside of the dewatering drum.

[0044] Furthermore, the rail 9 is installed inside the dewatering drum by bolts.

[0045] Furthermore, one end of the steel rail 9 extends into the interior of the dehydration drum, and the other end extends out of the dehydration drum.

[0046] Furthermore, supporting wheels are respectively installed at the four corners of the bottom of the trolley 10, and the trolley 10 is slidably installed on the rail 9 through the supporting wheels.

[0047] like Figure 6-7 As shown, the present invention also provides a method for quickly replacing a dehydration drum buffer box, which uses the above-mentioned device for quickly replacing a dehydration drum buffer box, and specifically includes the following contents:

[0048] First, disassemble the water-slag distributor 2 connected to the granulation tower 1 and the belt 4 installed in the dewatering drum, then extend one end of the rail 9 into the dewatering drum and install it;

[0049] When the buffer box 4 needs to be disassembled and repaired:

[0050] (1) Push the trolley 10 along the rail 9 into the dehydration drum and place it above the buffer box 4 to be transported. Use a wire rope to connect the trolley hook 13 on the side of the trolley 10 and the ear structure on the buffer box 4 so that the buffer box 4 to be transported is hung under the trolley 10;

[0051] (2) Use a wire rope to connect the trolley hook 12 and the electric hoist 11 at the front of the trolley 10, control the operation of the electric hoist 11, and pull the connected trolley 10 and the buffer box 4 along the rail 9 to the outside of the dehydration drum;

[0052] (3) Remove the wire rope connected to the lifting lug structure of the buffer box 4, separate the trolley 10 from the buffer box 4, lift the buffer box 4 to the descaling operation position by a crane, and then clean the buffer box 4;

[0053] When the buffer box 4 needs to be installed in the dehydration drum:

[0054] (1) Use a crane to lift the buffer box 4 to the bottom of the steel rail 9 outside the dewatering drum, place the trolley 10 on the steel rail 9, and use a wire rope to connect the trolley hook 13 on the side of the trolley 10 with the lug structure on the buffer box 4 to be transported, so that the buffer box 4 to be transported is hung under the trolley 10;

[0055] (2) Push the trolley 10 and the buffer box 4 along the rail 9 to enter the dehydration drum until the buffer box 4 is at the designated installation position, remove the wire rope connected to the lifting lug structure of the buffer box 4, separate the trolley 10 from the buffer box 4, and then install the buffer box 4;

[0056] After the disassembly, inspection or installation of the buffer box 4 is completed, the electric hoist 11 is controlled to pull the trolley 10 out of the dewatering drum, and then the rail 9 is disassembled.

[0057] like Figure 1As shown, in the current blast furnace smelting process, the molten slag discharged from the blast furnace flows into the granulation tower 1 through the slag groove, is washed into water slag by high-pressure water, enters the dehydration drum 3 through the water slag distributor 2 and the buffer box 4, and finally falls into the belt 6 for transportation after being dehydrated by the dehydration drum 3. When the buffer box needs to be repaired, it is necessary to first remove the distributor and the belt, and then use the round steel 7 installed under the buffer box to cooperate with the hook and the hand winch 8 and other structures to disassemble the buffer box 4, as shown in FIG. Figure 2 As shown, due to the small working space in the dehydration drum 3 and the heavy weight of the buffer box 4, the existing disassembly method requires a long disassembly time, resulting in extended maintenance time, during which red slag is discharged for a long time, resulting in a low labor rate of workers during the maintenance period and an increase in the cost of discharging dry slag.

[0058] By using the device and method for quickly replacing the dehydration drum buffer box provided by the present invention, when the buffer box needs to be cleaned, the buffer box can be transported by a trolley, which reduces friction resistance and can conveniently transport the buffer box out for cleaning. The device structure provided by the present invention is easy to manufacture and install, has low cost, can improve work efficiency, reduce labor costs, and reduce the cost of discharging dry slag and the cost of using large cranes, thereby reducing ironmaking costs.

[0059] The device and method for quickly replacing the dehydration drum buffer box of the present invention are applied to the blast furnace slag maintenance system of Benxi Iron and Steel Beiying Ironmaking General Plant, which is beneficial to reducing labor intensity, improving work efficiency, and reducing the cost of discharging dry slag.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A device for quickly replacing a dehydration drum buffer box, characterized in that: Including rails, trolleys and electric hoists; The steel rail is detachably mounted inside the dehydration drum and is located above all buffer boxes inside the dehydration drum; the trolley is slidably mounted on the steel rail and can slide along the steel rail; A lifting ear structure is installed on the top of the buffer box; a trolley hook is fixedly installed on the front of the trolley, and a trolley hook is fixedly installed on the side; the trolley hook is used to connect with the lifting ear structure through a wire rope, so that the buffer box is connected to the trolley; the electric hoist is used to connect with the trolley hook through a wire rope, so as to pull the connected trolley and the buffer box along the rail to the outside of the dewatering drum.

2. The device for quickly replacing a dehydration drum buffer box according to claim 1, characterized in that: The rails are installed inside the dewatering drum by bolts.

3. The device for quickly replacing a dehydration drum buffer box according to claim 1, characterized in that: One end of the steel rail extends into the dewatering drum, and the other end extends out of the dewatering drum.

4. The device for quickly replacing a dehydration drum buffer box according to claim 1, characterized in that: Supporting wheels are respectively installed at the four corners of the bottom of the trolley, and the trolley is slidably installed on the rail through the supporting wheels.

5. A method for quickly replacing a dehydration drum buffer box, characterized in that: The device for quickly replacing the dehydration drum buffer box according to claim 1 is used, and specifically includes the following contents: First, disassemble the water-slag distributor connected to the granulation tower and the belt installed in the dewatering drum, then extend one end of the rail into the dewatering drum and install it; When the buffer tank needs to be disassembled for maintenance: (1) Push the trolley along the rail into the dewatering drum and place it above the buffer box to be transferred. Use a wire rope to connect the trolley hook on the side of the trolley and the ear structure on the buffer box so that the buffer box to be transferred is hung under the trolley; (2) Use a wire rope to connect the trolley hook and the electric hoist at the front of the trolley, control the operation of the electric hoist, and pull the connected trolley and the buffer box along the rail to the outside of the dehydration drum; (3) Remove the wire rope connected to the lifting lug structure of the buffer box, separate the trolley from the buffer box, lift the buffer box to the descaling operation position by a crane, and then clean the buffer box; When the buffer box needs to be installed in the dehydration drum: (1) Use a crane to lift the buffer box to the bottom of the rail outside the dewatering drum, place a trolley on the rail, and use a wire rope to connect the trolley hook on the side of the trolley with the lug structure on the buffer box to be transferred, so that the buffer box to be transferred is hung under the trolley; (2) Push the trolley to drive the buffer box along the rail into the dehydration drum until the buffer box is at the designated installation position, remove the wire rope connected to the lifting lug structure of the buffer box, separate the trolley from the buffer box, and then install the buffer box; After completing the disassembly, inspection or installation of the buffer box, control the electric hoist to pull the trolley out of the dewatering drum, and then remove the rails.

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